过去时的句子后面加了一个doing sth的词组,为什么?

是填Has吗

如果是楼主自己写作，看楼主想表达什么意思了，如果楼主想表达他刚把灯关了，这是这个动作，就用He turned off the light just now. 但是楼主如果想强调他把灯关了，导致现在一片漆黑，就用He has just turned off the light.
如果楼主是做题，通过句子中的标志词或上下文来了解出题人想表达的意思。句子里有表示过去时间点的词，如just n...

Yesterday morning,I went to visit Mike's home.There were four members in his family.Mike's father,mother,little sister and himself.His father was mending a book shelter when I came to see them,and his mother was cooking in the kitchen in order to treat me.His little sister,Lucy,a 3-year-old girl,was playing with her doll in the sitting-room alone.That's a warm family.

短语 be determined to do sth

choose-chose-chosen选择

应该是从句用过去式,主句过去式,从句用过去式的某种形式（一般过去式,过去完成式,过去将来式等）

That was a very unforgettable day.On the morning,I got rid of a smooth dog of park ,and the weather was very good.Some stroke Tai Ji's,and some played badminton .some played football ,and people is all doing the different thing.i has been at home until noon ,I bought some vegetable and flesh ,which acted as one bowl face ,it was very delicious.Afternoon ,I was very idle ,because my friend invited me to go out and play basketball ,I was highly pleased.I tired out very much until completing basketball ,I was very joyful but.How colored ,meaningful it is today.
逗号不能隔开两个句子~
你说的~我一个人,不是这么翻译的...

也用一般过去式,或者过去的某种时态.
因为我们知道在条件句中有“主将从现”的语法现象.但是在这种情况以外,条件状语从句与其他从句一样都应该做到与主句时态一致,即主句是过去式,从句也应该是过去的某种时态,要么是一般过去式,要么是完成时或者也可以是过去进行时,这要取决于表达的内容来定.当然if引导的条件状语在主句是非将来时的情况中经常涉及虚拟语气的运用.
I would go to the concert if you would go 如果那时你去音乐会我也会去,这里从句中就不用go了,就用would go
涉及虚拟语气的情况就要另当别论,具体时态选取情况请参照一下那里的语法部分.

when引导的句子当然都是一般过去时.while引导的则是过去进行时

lie撒谎 lied lied lying
lie躺 lay lain lying
lay下蛋 lay laid laid laying

过去完成时表过去的过去 By the time we reached home,He had left.
Before the meeting started,he had left.
现在完成时表对现在产生了影响
I have learned many words in the last few years
加现在的时间 应该可用I have done it now我已经完成了

第一句不完整,应为The school bus is coming.= Here comes the school bus.
第二句 Time for supper 可以改写为 it was time for supper yesterday.

1.我已经吃过晚饭了（强调已经吃过,不想再吃）
2.我吃过晚饭了（只是单纯的说吃了饭这个动作而已）
嘿嘿

如果是实义动词,那么变疑问句,直接在句子前面加上Did ,动词过去式变动词原形
变否定句,直接在动词前面加上Didn’t,动词过去式变动词原形
如果是Be动词,那么变疑问句,直接把Be动词提前
变否定句,直接在Be动词后面加上not即可.
没有疑问望采纳~

可以(指SINCE后的从句要用一般过去时）,如
It's three years since he came here .
如果SINCE后接过去的时间点,一般是用现在完成时,不用过去时,如
He has studied here since two years ago.

Beijing----my favourite city Last summer holiday,I went to Beijing,the captial of China.It is bigger than my hometown.There were many beautiful places in Beijing.Such as the Summer Palace,the Great Wall and the Palace Museum.My favourite place was the Great Wall,because it is very great and wonderful.It is interesting to walk on the Great Wall.Beijing had a long history.And it was a fast grow city.I like this place very much.This is my favourite city.What about you?

An Unforgettable Travel
My families plan to visit the interesting place p of Shanghai.We are led to the Oriental Pearl TV Tower ,a famous tourist attraction,which is on every Shanghainese's lips.It is a magnificent building located in Pudong New Area,it is the tallest building,so it's very easy to see this building,even if you are several miles away it.As we get to the high floor of the Oriental Pearl TV Tower,we see the attractive viwswhich includes the Huangpu River through the window.At the moment,l suddenly moved by the builders put their soul and energy to this building and let it be a landmark of this city.
This is the trip l never forget.

从来没有这样用过。
还是用I want to be a teacher in the future比较好。

Winter holiday is coming.I have a plan to enjoy my holiday.I'm going to clean my house.Because Spring Festival is coming too.I will go to the flower market to buy some things to decerate my house.And I also prepare to get the red packets!

I got up at 6 yesterday.After I got up,I had my breakfast.I went to school at 8.I had four classes in the morning and two in the afternoon.I had lunch at 12.I had a nap after I had lunch.I had some sports after school was over.I came back home at six.I had supper at 6:30.I did my homework after I had my supper.I went to bed at 10.

during 表示在某段时间里,是PREP介词,
没有过去时

it's so unforgetable for me that i had an exciting birthday party.it's sunday,with my enthusiastic inviting,all my friends came to participate my biythday party.we ate a big cake together and danced the whole afternoon.
after we waved good-bye,i opened every gift with a sweet smile.i hope i can be with my fiends go through a happy party on my next birthday.

When they were served the ice cream 意思是何时有人给他们提供了冰激 When they served the ice cream 意思是他们何时给别人提供冰激凌
前者是被动,被提供,也即有人提供
后者是主动,他们是提供者

我的一家
One of my
我的爸爸在公证会计师事务所工作,性格十分温和,很疼爱我.我爸爸爱好看英文版的中国日报,平时一看就是一两个小时.有一次,爸爸在阁楼上读报,我轻手轻脚地走上了楼梯,可爸爸一点儿也没有察觉.我又悄悄地碰了他一下,他的身子一抖,是乎吓了一跳.爸爸回头一看,是我,便笑着对我说：“ 上来干嘛!快下楼学英语去.” 瞧,我爸看英语报多认真!怪不得老爸的英语水平那么高.有时,他还用英语和我们对话,我们听了目瞪口呆,爸爸便大笑起来,我们也跟着哈哈大笑.
My dad in the notary public accounting firms work,personality is very gentle,very love me.My father love watching the english-language China Daily,usually a see be a two hour.Once,my father read the newspaper in the attic,I stole on the stairs,but father don didn't notice.I also quietly touch him once,his body a shake,who is a scare.Dad looked back,it's me,then he smiled and said to me:"up why!Quick come downstairs to learn English to." Look,my dad see how serious English newspaper!No wonder the old daddy's English level so high.Sometimes,he also in English and we dialogue,we listened to gape,dad burst out laughing/in laughter,we also follow to laugh.
妈妈在一家外资企业工作,有一个大嗓门.她很有学问.有一次期中考试前,她给我复习功课,我的语文、 数学总分居然位于全班第二.中国对加入世界杯,她就成了一个球迷,几乎每场球赛,她都看过了.有一次,妈妈正在干家务活,忽然听到电视机里传出了“ 马上是英格兰队阿根廷对的比赛” 的声音,妈妈立即放下手中的家务活,一屁股坐在沙发上,聚精会神地看足球比赛,她认为英格兰队一点儿也不厉害.后来,贝克汉姆一个点球射进了,妈妈大喊大叫：“ 怎么让他们进球了!” 害得我睡也睡不着,只好用被子蒙住头,谁叫她是我妈妈呢!
My mother in a foreign investment enterprise,has a loud voice.She's knowledge.Once the mid-term exams,she gave me to review the lessons,my Chinese,maths scores in the class that the second.China joined the World Cup,she became a fan,almost all the game,she had seen.Once,my mother was doing housework,suddenly heard television came "immediately is the England team in Argentina game" voice,mother immediately put down the housework,a bottom to sit on sofa,deeply absorbed in watching football games,she thinks England is not a bit much.Later,David Beckham,a penalty shoot into,mother Shouting:"how to make their goal!" Harm I sleep also can not sleep,have to use the quilt cover head,who call she is my mother!
我嘛,爱好英语、 书法、 小提琴和电脑.有时,我在家拉小提琴,爸爸妈妈永远是我忠实的听众.
Well,like English,calligraphy,the violin and the computer.Sometimes,I play the violin at home,mom and dad is always my listeners.
这就是我温馨的一家.
This is my sweet a.

2,3可以,4后面无论接表语还是状语从句,都是一般过去时表示现在,过去完成时表示过去,1你应该很熟啊,不说了哦~

We were not allowed to touch it .
be allowed to do 【词组】被允许做某事,改为过去时只改be动词,不改其他的部分.

学习没有取巧的方法.作文书只看是不行的,你背上100篇作文再试一试!

虚拟语气(Subjunctive Mood)这一语法项目是各类英语考试中心测试的重点之一.虚拟语气是一种特殊的动词形式,用来表示说话人所说的话并不是事实,而是一种假设、愿望、怀疑或推测.
Ⅰ用以表示虚拟条件的虚拟语气
⒈ 用if条件从句表示的虚拟条件,是虚拟条件最普通的方式.
① 虚拟现在时表示与现在事实相反的假设,其if 从句的谓语形式用动词的过去式(be 一般用were),主句用would/ should/ could/ might +动词原形,例如：If I were in your position I would marry her.
② 虚拟过去时是表示与过去事实相反的假设,if 从句的谓语形式用过去完成时即had＋过去分词,主句用would / should / could / might + have +过去分词,例如：If it had not rained so hard yesterday we could have played tennis.
③ 大多数的虚拟条件句属于上面三种情况的一种,但并不排除存在条件和后果中,一个和现在情况相反,另一个和过去情况相反,例如：If you had followed what the doctor said, you would not have been so painful now.这个句子在高中出现频率颇高.
④ 但是,如果后果用了虚拟语气,而条件却用陈述语气,这种用法是错的.
⒉ 除了表示虚假条件外,if从句还可以表示对将来的推测,由于是将来还没有发生的,所以谈不上是真实的还是虚假的,只能说这个事情发生的可能性有多大.一般情况下,可以用陈述语气的if从句来表示对一个未来事实的推测,这个事实是完全可能发生的.If从句的谓语形式用一般过去式或用were to / should +动词原形,主句用would / should /could/ might +动词原形,例如：Jean doesn't want to work right away because she thinks that if she were to get a job she probably wouldn't be able to see her friends very often.（1996年1月四级第44题）
⒊ 有时可以把含有助动词、情态动词、be或have的虚拟条件句中的连词if 省去,而将had , should, were 等词提到主语之前,即用倒装结构,这时候,如果出现not等否定词,否定词需放在主语后面.这种结构在口语中很少使用,但频频出现在各类考试中出现,例如：If it had not rained so hard yesterday we could have played tennis.→Had it not rained so hard yesterday, we could have played tennis.
⒋ 大多数的虚拟条件通过上面所讲的两种方法表达,但在个别句子中也可以通过介词without和介词短语but for表达,副词otherwise等表达出来.例如：We didn't know his telephone number; otherwise we would have telephoned him.（1995年6月四级第46题）值得注意的是,包含but for的句子,谓语动词必定要用虚拟形式,但包含without等短语的句子,谓语动词未必一定要用虚拟语气.
⒌ 有时虚拟条件不是明确地表达出来,而在蕴含在用but引导的从句里,于是便出现了有谓语动词是虚拟语气的主句加上谓语动词是陈述语气的but从句构成的并列复合句,例如I would have hung you but the telephone was out of order.在这样的句子里,如果主句没有用虚拟语气,或者从句用了虚拟语气,都是错的.
Ⅱ用在宾语从句中的虚拟语气
⒈ 在表示愿望的动词wish后的宾语从句中,需用虚拟语气.（wish后的that 常省略）,根据主句时态,从句谓语时态相应退后一位,例如：How she wished his family could go with him.
⒉ 在具有愿望、请求、建议、命令等主观意愿的动词(desire, demand, advice, insist, require, suggest, propose, order, recommend, decide …) 后的宾语从句中需用虚拟语气.谓语动词用(should) +动词原形.值得注意的是,如果宾语从句的动词是否定的,否定词not的位置应在动词之前,而不是动词之后.例如：The head nurse insisted that the patient not be move.另外,如suggest表达“暗示”,insist表示“坚持某种说法”时,后面的从句不用虚拟语气,例如：Her pale face suggests that she is ill.或He insisted that he did not kill the boy.
除此之外,上述动词也要求用虚拟式
① 在It is+上述动词的过去分词,其后所跟的主语从句中,如It is suggested that pupils wear school uniforms.
② 在上述动词相应的名词形式作主语+连系动词,其后的表语从句中,例如His suggestion was that classed be re-scheduled.
③ 在对上述动词相应的名词进行解释的同位语从句中,如：The workers raised the demand that their pay be increased to cope with the inflation.
⒊ would （had）rather , would sooner也用来表达主观愿望,它们之后的宾语从句中需用虚拟语气.谓语动词用过去式表示现在或将来,用过去完成式表示与过去事实相反,例如：I would rather he went right now.
Ⅲ其他形式的虚拟语气
⒈ it is +necessary等形容词后,that主语从句中虚拟形式使用,这类形容词包括necessary, important, essential, imperative, urgent, preferable, vital, advisable等,例如It is necessary that you listen to the teacher carefully.或者It is essential that you be able to pronounce every single word correctly.
⒉ 在It's (high/about) time 之后的定语从句中需用虚拟语气.谓语动词用过去式,例如It is high time that you went to school
⒊ 虚拟语气在as if / as though 引导的方式状语从句中的应用（谓语动词形式与wish后的宾语从句基本相同）表示与现在事实相反或对现在情况有怀疑,谓语动词用过去式.例如：He felt as if he alone were responsible for what had happened. 表示过去想象中的动作或情况,谓语动词用过去完成式.
⒋ 在lest 引导的状语从句中,谓语动词多用虚拟语气,(should )+ 动词原形.例如： The mad man was put in the soft-padded cell lest he injure himself.（1998年1月四级第38题）
⒌ 在if only 引起的感叹句中需用虚拟语气.谓语动词用过去式或过去完成式.例如： Look at the terrible situation I am in! if only I had followed your advice.
虚拟语气：表示动作或状态不是客观存在的事实,而是说话人的主观愿望、假设或推测等.如：
①If I were a bird, I could fly in the air.如果我是一只小鸟,我就能在空中飞行.
②I wish I could pass the examination.我希望我能通过考试.
③May you succeed!祝您成功!
虚拟语气在语法里算得上是个难点.让我们就从最简单的开始吧.
虚拟语气详解运用:
简单句中的虚拟语气
一、情态动词的过去式用于现在时态时,表示说话人的谦虚、客气、有礼貌、或委婉的语气,常用于日常会话中.如：
⑴.Would you be kind enough to show me the way to the post office?请你告诉我去邮局的路好吗?
⑵.It would be better for you not to stay up too late.你最好别熬夜到很晚.
二、表祝愿.
1、常用“may+动词原形”表示祝愿,但愿,此时may须置于句首（多用于正式文体中）.
⑴、May good luck be yours!祝你好运!
⑵、May you be happy!祝你快乐!
⑶、May you do even better!祝你取得更大成就!
⑷、May you have a good time. 祝愿你玩的痛快.
⑸、May the friendship between us last long. 祝愿我们的友情天长地久.
⑹、May you be happy. (注意那个be ) 祝你幸福.
2、用动词原形.例如：
(1).Long live the people! 人民万岁!
(2).“God bless you,”said the priest.牧师说：“愿上帝保佑你!”
(3).Have a good journey! 祝愿你旅途愉快!
三、表示强烈愿望.（该类型虚拟语气谓语仅用动词原形,第三人称单数也不加“s”）
(1).God save me．
(2).Heaven help us．
四、表命令
1.命令虚拟语气只能用在第二人称(you),而且通常省略主语(也就是you).
2.句子尾通常加上感叹号：!
3.虚拟语气动词用一般现在时态(Simple Present),如：work, be , go
4.否定形式的命令语气,可用助动词do,加上not.
(1). Work !
(2). Work harder !
(3). Be more alert ! (虚拟语气动词Be)
(4). You go out !
(5). Do not work so hard. (do not 表示否定的虚拟语气)
(6). Don't be afraid. (口语中常用don't 代替do not)
五、在一些习惯表达中.如：
(1).You’d better set off now.你最好现在就出发.
(2).I’d rather not tell you the secret.我情愿不告诉你这个秘密.
第三部分：名词性从句中的虚拟语气
第一节：宾语从句(Subordinate Clasue)中的虚拟语气
一、在动词wish后的宾语从句中的虚拟语气
在动词wish后的宾语从句中的虚拟语气,常省去宾语从句的引导词that.
一）、对现在情况的虚拟（与现在的事实相反）：
从句用过去式或过去进行式(时间上是同时的).其句子结构为：宾语从句的谓语be和were(was),实义动词用过去式.例：
1. I wish (that可省略,下同)I knew the answer to the question.(wish, 动词过去式knew)我希望知道这个答案.(事实上是不知道)
2. I wish it were spring in my hometown all the year around.(wish, were)但愿我的家乡四季如春.(事实上不可能)
3. I wish I were a bird.(wish, were)但愿我是只小鸟.(事实上不可能)
4. When she was at the party,she wished she were at home.(wished,过去虚拟动词were)(事实上并不在家)
5. Now that he is in China, he wishes he understood Chinese.(wishes,过去虚拟动词understood)
现在他在中国,他希望能懂得中文.(事实上并不懂)
6. When we begin the trip, they will wish they were with us.(will wish,过去虚拟动词were)(事实上并不和我们在一起)
二）、对过去情况的虚拟（和过去的事实相反）：
用wish表示对过去事情的遗憾.其句子结构为：宾语从句的谓语用过去完成时,或would, could, might+现在完成时.例：
1. I wish (that可省略,下同)I hadn't wasted so much time.
我后悔不该浪费这么多时间.(事实上已浪费了)
2. He wishes he hadn't lost the chance.
他真希望没有失去机会.(其实已失去)
3. We wished he had spoken to us.
(wished,had + spoken)(事实上他并没同我们讲)
4. I wish you had called earlier.
(wish, had + called)(事实上已迟了)
5. They will wish they had listened to us sooner.
(will wish,had + listened)(事实上并不如此)
例题分析：I wish I ______ longer this morning, but I had to get up and come to class.
A. could have slept B. slept C. might have slept D. have slept
动词wish后面接从句,表达不可能实现或与事实相反的情况时,谓语动词要用虚拟语气,即用过去式（表示现在发生的动作）或过去完成式（表示过去发生的动作）.本题后半句谓语动词have用的是过去时had
to get up and come, 所以前面要用过去完成时表示过去发生的动作.所以, 选项A)could have slept是答案
三）、对将来情况的虚拟(表示将来的主观愿望)：
从句动词"would/should/could/might + 动词原形"(时间上较后)(请注意：主句和从句的主语不相同).用wish表示对将来事情的愿望.例：
1. I wish it would stop raining.(虚拟动词would+动词原形stop)
我希望雨能停止.(事实上雨还在下着呢)
2. I wish you would be quiet.(would + be)
我希望你安静一些.(事实上那家伙还在吵着呢)
3. You wished she would arrive the next day.(would + arrive)
你希望她第二天会到.(事实上她还没到)
4. I wish she would change her mind.(would + change)
我希望她会改变主意.(呵呵,女孩子可没那么容易就改变主意喔)
5. He will wish we would join him the following week.(would + join)
(只是希望我们和他在一起,实际上还没在一起)
四）、注意：
1.如果将wish改为过去式wished, 其后that 从句中的动词形式不变.例如：
I wished I hadn't spent so much money.
我要是那时没有花掉那么多钱就好了.
2. 如果that 从句中用would , 一般表示对现状不满或希望未来有所改变或请求
I wish he would answer my letter.
I wish prices would come down.
I wish you would help me.
I wish you would stop asking silly questions.
二、在表示建议、命令、要求、忠告等动词的后面的宾语从句中的虚拟语气
由于这些动词本身隐含说话者的主观意见,认为某事应该或不应该怎样,这些词语后面的“that”从句应用虚拟语气,且均以“should+动词原形”表示这种语气,但事实上“should”常被省略,故此从句中谓语动词用原形,常用的此类动词有：
表示“要求”的：ask, desire, request, demand, require, beg
表示“提议、劝告、建议”的：move, prpose, suggest, recommend, advise, vote
表示“决定、命令”的：decide, order
表示“主张”的：maintain, urge
表示“同意、坚持”的：consent, insist
例如：
1.The doctor suggested that he (should) try to lose his weight.
2.He insisted that we (should ) tell him the news.
3.When I suggested that he try shaving cream, he said, “The razor and water do the job. ”(当我建议他用刮胡膏时,他说“剃刀和水就行了”.)
4.He pursued various theories for several days until I suggested we take the toy apart to see how it did work. (他费了几天功夫寻找理论根据,直到我建议拆开看看它是如何转动的.)
5.One can suggest that students should spend two or three years in an Englishspeaking country. (我们建议学生应在说英语的国家呆上两三年.)
在表示命令、建议、要求等一类动词后面的从句中虚拟语气很普遍,其结构如：
order, suggest, propose, require, demand, request, insist, command, insist +... (should) do
6.I suggest that we (should) hold a meeting next week.
7.He insisted that he (should ) be sent there.
但注意：在insist 后的从句中, 如果是坚持自己, 用陈述语气, 坚持别人做什么事情, 用虚拟语气.
8.she insists that she is right.
9.she insisted that I should finish the work at once.
或者说,suggest, insist不表示建议或坚持要某人做某事时,即它们用于其本意暗示、表明、坚持认为时,宾语从句用陈述语气.
10.The guard at gate insisted that everybody obey the rules.
三、在expect, believe, think, suspect等动词的否定或疑问形式后的宾语从句中的虚拟语气
在expect, believe, think, suspect等动词的否定或疑问形式后的宾语从句中,我们经常用“should＋动词原形(或完成形式)”,表示惊奇,怀疑,不满等.
I never thought that he should be such a brave young soldier.
我们从来没想到他是个如此勇敢的小战士.
四、would rather , would sooner,had rather, would (just) as soon ,would prefer之后的宾语从句中的虚拟语气
would rather , would sooner, had rather, would (just) as soon,would prefer（希望）也用来表达主观愿望,它们之后的宾语从句中需用虚拟语气.谓语动词用过去式表示现在或将来,用过去完成式表示与过去事实相反.表示”宁愿做什么”或"对过去做的事的懊悔".
(1).I would rather he came tomorrow than today.
(2).John would rather that she had not gone to the party yesterday evening.
(3).Don' t live in the world, I would rather( I would just as soon) you die.
(4).I would rather you go tomorrow.
(5).I would rather everything hadn' t happened in the past.
(6).The manager would rather his daughter did not work in the same office．经理宁愿她女儿不与他在同一间办公室工作.
(7).To be frank,I'd rather you were not involved in the case．坦率地说,我希望你不要卷入这件事.
(8).You don't have to be in such a hurry．I would rather you went on business first．你没有必要这么着急,我宁愿你先去上班.
(9).I'd rather you didn't make any comment on the issue for the time being．我倒希望你暂时先不要就此事发表意见.
(10).Frankly speaking ,I'd rather you didn't do anything about it for the time being．坦白地说,我宁愿你现在对此事什么也不要做.
(11).Wouldn't you rather your child went to bed early?为什么你不愿让你的孩子早点上床呢?
(12).I would just as soon you had returned the book yesterday．我真希望你昨天把这本书还了.
注：①若某人愿自己做某事,would rather后用动词原形
I would rather stay at home today．
②would rather．．．than．．．中用动词原形
I would rather stay at home than go out today．
五、“had hoped”后的宾语从句中的虚拟语气
用“had hoped”表示原来希望做到而实际上未能实现的事情,其宾语从句的谓语用“would+动词原形”.
I had hoped that she would go to the U.S. and study there, but she said she liked to stay in China.我原本希望她到美国去念书,但她说她喜欢留在中国.
主语从句中的虚拟语气
一、“It is (was)+形容词（或过去分词）+that……”结构中的虚拟语气
在形如“It is (was)+形容词（或过去分词）+that……”结构中,使用某些表示愿望、建议、请求、命令、可能、适当、较好、迫切、紧近、重要等形容词后的主语从句的谓语也用虚拟语气.其表达形式为should ＋动词原形或省略should直接用动词原形（美国英语中省去should）
常用的形容词：* natural (自然的), appropriat (适当的),advisable (合适的), preferable (更可取的), better (更好的)* necessary (必须的), important (重要的), imperative (急需的), urgent (急迫的), essential (本质的), vital (必不可少的)* probable (很可能的), possible (可能的)* desirable (极好的)advisable（合理的）,compulsory（必须的）,crucial（紧急的）,desirable（理想的）,essential（必要的）,imperative（迫切的）,incredible（惊人的）,necessary（必要的）,possible（可能的）,strange（奇怪的）,urgent（紧迫的）.
常用的过去分词(Past Participle):* required (需要的), demanded (要求), requested (被请求的), desired (要求)* suggested (建议), recommended (推荐)* orderd (命令)
1. It is necessary that we (should 可省略,下同）have a walk now.(necessary, should + have) (表示有需要去散步)
2.It was necessary that we (should) make everything ready ahead of time.(necessary, should + make) (表示有必要事先做好准备)
3. It is required that nobody (should) smoke here.(required, should + smoke) (表示要求不要在此抽烟)
4. It is important that every pupil (should) be able to understand therule of school.(important, should + be) (表示重要的是学生都能了解校规)
5. It's important that we (should) take good care of the patient.(important, should + take) (表示重要的是照顾好病人)
6. It is natural that she should do so. (形容词natural, should+动词原形do)
7.It is essential that these application forms be sent back as early as possible．这些申请表应尽早地寄回,这是很重要的.
8.It is vital that enough money be collected to fund the project．重要的是募集足够的钱,为这个项目提供资金.
9.It is desired that we（should）get everything ready this evening．希望我们今晚一切都准备就绪.
注：在上述所列形容词后面用that引出的宾语从句中,谓语动词也要用虚拟语气.
10.I don't think it advisable that Tom be assigned to the job since he has no experience．汤姆缺乏经验,指派他做这项工作我认为是不恰当的.
二、在It is ＋名词＋that…的主语从句中的虚拟语气
在It is ＋名词＋that的主语从句中,常用虚拟语气,表示建议、命令、请求、道歉、怀疑、惊奇等.这类名词
有：advice ,decision ,desire ,demand ,idea,motion ,order,pity ,preference ,proposal,recommendation ,
requirement,resolution,shame,suggestion,surprise,wish,wonder等.
⑴、It is my proposal that he be sent to study further abroad．我建议派他去国外进一步学习.
虚拟语气用在表语从句或同位语从句中
当某些表示建议、请求、命令等主观意向的名词作主语时,其后的表语从句或同位语从句需用虚拟语气,其表达形式为should ＋动词原形或直接用动词原形.这类名词常见的有：
demand (要求), desire (请求),requirment (要求)
advice (劝告), recommendation (建议),suggestion (建议)
order (命令)
necessity (必要地), preference (优先)
proposal (计划), plan (计划), idea (办法),
recommendation以及plan,idea,resolution等.
We are all for your proposal that the discussion be put off．我们都赞成你提出的将讨论延期的建议.
The suggestion that the mayor present the prizes was accepted by
everyone．由市长颁发奖金的建议被每个人接受.
⑴、 The advice is that we (should 可省略,下同) leave at once.
(名词advice,should + leave) (表示加以劝告)
⑵、 My idea is that we (should) get more people to attend the
conference.
(idea, should + get) (表示做出主意)
⑶、 I make a proposal that we (should) hold a meeting next week.
(proposal, should + hold) (表示做出计划)
⑷、 The judge assented to the suggestion that .
〔A〕both of the criminals will soon be set freedom
〔B〕some of the criminals there are of guilt only
〔C〕the girl was to be paroled in the custody of a welfare society
〔D〕the prisoner be sentenced to death
希望这些对你有帮助!

My holiday
I had an interesting holiday!
In my holidays,I often got up early and went out to run for an hour,than I returned home .After the breakfast,I wrote my homework until noon.After 12 o'clock and the lunch,I went to fly kites.I really like flying kites,it's very fantastic.In the afternoon,I went swimming with my friends.Than I went home to eat dinner because my mother must have prepared it.
What a wonderful holiday!

he said that he had seen an ufo the day before yesterday...
应试教育 说的话都不像话了,可怜的孩子们.

1、 used to do sth.
used to 意为“过去常常”,可看作半助动词或情态动词,其后跟动词原形,表示过去的习惯、经常发生的动作或状态.如：
He used to be a teacher in our school. 他曾经是我们学校的一位老师.
There used to be an old temple near the village. 过去村子的附近有一座古庙.
2、 be used to doing sth.
be used to doing sth.表示“习惯于做某事”,其中to是介词,后接名词或动名词.如：
The old man and his wife have been used to living a simple life. 这对老夫妇已经过惯了简朴的生活.
I am not used to my new job. 我不习惯我的新工作.
Is she used to walking after supper? 她习惯晚饭后散步吗?
be used to还可用get used to表示“渐渐习惯于……”.如：
You'll get used to your new job. 你很快就会习惯新工作的.
3、 be used to do sth.
be used to do sth.表示“被用来做某事”.如：
This computer is used to control all the machines. 这台电脑是用来控制所有机器的.

Children‘s Day
On June 1st day, all children are very happy. On that day ,we don‘t go to school.Most of the children will go to the park. In the park, some children are flying kites, some are playing football, and some are playing a game.In the sky,there are a lot of kites.But there is only once a year we will have this happy festival.I think Children‘s Day is the most important holiday for the children.Because everybody has fun on that day!

如果这个句子要说的是一个常见的固定习惯或情况时,就是原型
但如果你是用过去时,如：it was last month when she travelled to Shanghai.则就是过去时了
这要看情况的

是的,有过去式的情态动词要用过去式 ,比如can要变成could,may要变成might.

I saw a man who dressed like an antient man just brushed with me.

不可以
学习" if " 引导的条件状语从句的用法,现在总结一下:
if 条件句不一般,几个要点记心间;
条件句,放在前,逗号要放句中间.
条件句表可能,主句多用将来时；
条件句表事实,主句常用现在时.
在 if 引导的条件状语从句中,如果从句谈论的是一个有可能发生的事实及其产生的相关的结果,主句用一般将来时态,从句用一般现在时态.如：
We can walk there if we can't find a bus .
If it rains tomorrow ,we will not go to the zoo.
What will you do if you find a panda in danger.
如果 if 条件句谈论的是重复发生和预示要发生的情景和事件,则主从句大多用一般现在时态.如：
If bears are in danger ,they attack people.
注意 ：
在 if 引导的条件状语从句中,if 和条件句位置灵活,可直接放在主句后面,若 if 条件句放句首,
从句后面要加逗号,和主句隔开.
还要注意前后时态一致原则

也一样！

不能.但你可以使用以下句型达到同样的目的：
-------- It was necessary for him to come again.
He needs to go ------ it is necessary for him to go .

这个很难概括的,英语时态的应用要靠学习,但也靠经验.

送给音乐老师：您有贝多芬似的灵魂,莫扎特似的灵感,相信您也一定会有德彪西似的灵动的生活!
送给地理老师：您带我们领略了亚马孙平原的缤纷,撒哈拉沙漠的奇特,相信您也一定会带领我们一览青藏高原的磅礴!
自己打的.望采纳!

He saw the magic clothes.

过去时是过去发生过了的事实,比如你昨天打球了：I played basketball yesterday.

1a.I went to school last year
1b.I am going to school this year
2a.I will go to study soon
2b.I have been studying for many years
3a.I am studying now
3b.I had been studying since 5 years ago
4a.I took many classes in school
4b.I will take English class soon
5a.I am going to school later
5b.I went to school last Monday

this kingdom represents 这个定语从句之所以用一般现在时主要是侧重陈述一个客观事实,过去是这样,现在仍然如此
请在客户端右上角评价点“满意”即可,

如果是一般过去时就是把动词变为过去式.如果是过去进行时就用was/were加上动词的ing形式,如果是过去将来时就是would加上动词原形.过去完成时就是had加上过去分词.你是问什么撒,又不说清楚

I didn't answer the question
DID后面为原形

C更贴近当时对问题做回答的语态,别人问问题你马上回答的话,一般都是过去进行时.A 不适合用在直接回答别人的时候,不过用了也是很勉强的,它是用在过去时,但是不适合对问问题的人做直接回答时用.
如果是向别人说一件事不是直接回答别人的问题,我昨晚没有看电视.i didn's watch TV last night 这里就不适合用 i was not watching TV last night?
自己感觉下就慢慢体味到了

过去时的:
Snake and toielt
This summer. My parent and I went to Xi'an.
One day,we went to climb Mount Hua, crawled time of 200 metres,we saw a toilet,I was going to go the toielt.I saw something moving,I was very afraid,then began to yell,a sister entered the toielt and saw it,she said:" it's a snake!" we ran out quikly . Two brothers walked into the toilet and had a look. They said:" it's a very big snake ."
We yelled and we were very frightened.
we lefe soon.
( 算你的运气好,我刚好有一篇,是91字的)
将来时和现在时等一下哈!

进行时：主语+be+doing,用于正在做的动作
过去时：主语+did,表示已经发生了的动作
e.g:it is raining表示正在下雨
it rained yesterday表示昨天下了雨