用 when while 填空The boy was walking to school（） the UFO lande

题是不对的,while后面要跟进行时,像这里应该用过去进行时.
我们老师教的,不会错.

when和while引导的时间状语从句与这一时态连用.所以区别when和while的用法成了这一单元的难点.（一）、when,while都有“当……时候”的意思.when既可表示某一点时间,也可以表示某一段时间 .在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生.例如：1、I was just reading a book when she came into my room.她走进我房间时,我正在看书.2、Were you writing when the teacher came in?老师进来的时候,你在写信吗?3、When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想.（二）、while只能表示某一段时间,不能表示某一点时间.在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在.例如：1、While Jim was mending his bike,Lin Tao came to see him.正当吉姆修自行车时,林涛来看他.2、You can’t do your homework while you’re watching TV.你不能一边看电视一边做家庭作业.（三）、另外,when和while的区别还在于：while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态.例如：1、While they were talking ,the bell rang.正在他们谈话的时候,上课铃响了.2、I was doing my homework when my mother came back home yesterday evening.昨天晚上妈妈回家的时候,我正在做家庭作

while和when引导的时间状语从句主句用一般时（一般过去时）从句用进行时（过去进行） .while引导的从句要加延续性动词 而when 延续和短暂性动词都可以 所以when有包含while .while可以用when替换.但是when有时候不能用while替换.比如 the telephone rings when I comeing in 这句就不能用while代替.when引导的时间状语从句时态该用什么时态就什么时态.而while引导的时间状语从句一般用过去进行时 当强调两个动作同时发生时 用while而不用when.比如I am cooking while Jane is practicing .when和while还可做连词.做连词时while表示对比 I am good at Chinese while he is good at English.when 则.when I was young .

when 意思是：正当.时.
while 意思是：当.时.和.同时.
强调一边干的同时.另一边也干着.强调动作的平等性和一种状态性.如：
She listened closely while he read the letter.
他读信时,她听得很仔细.
I'll take care of your children while you are away.
你不在时我会照顾你的孩子的.
而while这个词还有另外几个意思是：（名词）一段时间；一会（for a while）；
还可以做（条件状语,或引导让步状语从句词）意思是：虽然,尽管； 然而；只要.
第一个句子while用在这里是做尽管,然而用的.
翻译成：尽管开心不等同于有钱,贫穷却多和不开心相伴.（大体意思）

很高兴为您
while后面的动词只能是延续性动词,强调主从句的两个动词同时发生,动词必须是分词形式（be+ing形式）
when后面的动词有可能是一般形式,也可以是分词形式.要用ing还是分词形式主要还是要看动词是瞬间动词还是延续性动词.例如：
他死了 绝对不可以说：他正在死(错误)
他在购物中（正确,用ing形式）
结论：
像“死”这样的动词是瞬间动词,不可以用ing形式,“离开”是瞬间动词,不可以说正在离开
而像“购物”这样的动词是延续性动词,可以用ing形式,也可以不用.
如果表示在一个时间点上发生的事情,一般用ing,例如：在6点钟,这是一个准确的时间点,而不是时间段,所以用ing形式：He was cooking when(while) it was 6:00.
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While后应该跟的是进行时,而When则跟一般时态,在做题时要把握住不要重复,比如你的第一个句子,前面是一般过去时,所以后面就应该是过去进行时；第二句的话,因为后面是一般过去式,所以就应该用While
首先应该是went,而其实by plane=take a plane（这是不规范的,但是你可以这么理解）然后再来看这个句子,这是句子便可以成为 He take a plane to Beijing last Sunday. 可是要注意时态,这是过去式的,所以要把take改成took,这就是一个固定的模式,我可以给你写一下：sb go/goes/went to someplace by sth =sb take/takes/took sth to someplace. （自己临时编的,应该可以对付一些题目的）
至于下一题的话,TO sb's surprise =be surprised in doing sth =be surprised to……,就说说这一题吧,就可以写成 He was surprised to find the lovely dog dead.
第五题,就这么和你说吧,这是一个肯定的陈述句,剧中也没有任何表示否定的单词,所以,就可以直接填上weren't you如果前面是否定的,那后面就应该是肯定的哦.
关于倒装句,你说的是There be句型吗?是什么方面不明白呢?

I'd like to know when they'll let him out.
我想知道他们什么时候放他.
There were times when I didn't know what to do.
有些时候我不知道该怎么办才好
John got engaged to her when travelling last winter.
去年冬天旅行时,约翰与她订了婚.
Don't get excited when you talk.
你说话时别激动.
How can he get the promotion when his boss dislikes him?
既然上司不喜欢他,那他怎么会获得提升呢?
I had only fifteen dollars on me when the book I wanted cost twenty.
我身上只带了十五美元,可是我想买的那本书定价二十美元.

①when是at or during the time that,既指时间点,也可指一段时间；
while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词.
②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生.
③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时；如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如：
a.When the teacher came in,we were talking.
当此句改变主从句的位置时,则为：
While we were talking,the teacher came in.
b.They were singing while we were dancing.
④when和while 还可作并列连词.when表示“在那时”；while表示“而,却”,表对照关系.如：
a.The children were running to move the bag of rice when they heard the sound of a motor bike.
孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音.
b.He is strong while his brother is weak.
他长得很结实,而他弟弟却很瘦弱.
when; while 当……时候
while能用when代替; 但是when却不一定能用while代替.
while+从句,动作一定会延续
when+延续性动词/瞬间动词; when he arrived
when he died
when,while强调动作同时发生
过去进行时 :
在过去的某一点时间,或者是过去某一动作同时发生的另外一个动作
瞬间动词(arrive)无进行时态
I am arriving 进行时态表示将要
When he arrived,I was having dinner.
同时发生的两个动作,均用过去进行时
When I was doing my homework,my mother was cooking.
When my mother was doing the housework,my father was watching TV.
同时发生的两个动作
1.一个用一般过去时,另一个用过去进行时
2.分工的情况,均用过去进行时
When the plane arrived,...were waiting inside the main building
while others were waiting on...
While...
...were keeping guard at the door,two others opened the parcel.
表面上是分工,两个动作同时发生,不是同时开始同时结束,延续时间不一致,
长一点时间的动作用进行时态,短时间的动作用过去时.
When someone knocked at the door,I was having dinner.
when和while引导的时间状语从句与这一时态连用.所以区别when和while的用法成了这一单元的难点.
（一）、when,while都有“当……时候”的意思.when既可表示某一点时间,也可以表示某一段时间 .在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生.例如：1、I was just reading a book when she came into my room.她走进我房间时,我正在看书.2、Were you writing when the teacher came in?老师进来的时候,你在写信吗?3、When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想.
（二）、while只能表示某一段时间,不能表示某一点时间.在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在.例如：1、While Jim was mending his bike,Lin Tao came to see him.正当吉姆修自行车时,林涛来看他.2、You can’t do your homework while you’re watching TV.你不能一边看电视一边做家庭作业.
（三）、另外,when和while的区别还在于：while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态.例如：1、While they were talking ,the bell rang.正在他们谈话的时候,上课铃响了.2、I was doing my homework when my mother came back home yesterday evening.昨天晚上妈妈回家的时候,我正在做家庭作业.
when/while都可做并列连词．前者表and at that time,(这时,突然),后者表对比,可译为”然而”
I was going downstairs when the telephone rang.
Lucy is in blue while Lily is in green.
when后加瞬间动词 while后也可加持续性动词

little 修饰不可数,few修饰可数名词复数 均含否定意义,表是少到几乎没有,a little修饰不可数,a few 修饰可数 均表少量,少数,bit单独不用做两次,a bit 只能接形容词副词原级或者比较级,a bit of,才可以用来修饰不可数名词.lots of可以与 a lot of互换使用,可修饰不可数名词和可数名词复数.此外,口语中还常用 a little bit 表有点
When和While的区别 ①when是at or during the time that,既指时间点,也可指一段时间,while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词.②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生.③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时；如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如：a.When the teacher came in,we were talking.当此句改变主从句的位置时,则为：While we were talking,the teacher came in.b.They were singing while we were dancing.④when和while 还可作并列连词.when表示“在那时”；while表示“而,却”,表对照关系.如：a.The children were running to move the bag of rice when they heard the sound of a motor bike.孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音.b.He is strong while his brother is weak.他长得很结实,而他弟弟却很瘦弱.

宾语从句
在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句.
1.宾语从句的连接词
从属连词
连接宾语从句的从属连词主要有that,if,whether.
that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句.
He told that he would go to the college the next year
他告诉我他下一年上大学.
I don’t know if there will be a bus any more.
我不知道是否还会有公交车.
Nobody knew whether he could pass the exam.
没人知道他是否会通过考试.
连接代词
连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.
连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述.
Do you know who has won Red Alert game?
你知道谁赢了这一局红警游戏吗?
I don’t know whom you should depend on.
我不知道你该依靠谁.
The book will show you what the best CEOs know.
这本书会告诉你最好的执行总裁该了解些什么.
Have you determined whichever you should buy,a Motorola or Nokia cell phone?
你决定好是买诺基亚还是摩托罗拉的电话了吗?
连接副词
连接副词主要有when,where,why,how,whenever,wherever,however等.
He didn’t tell me when we should meet again.
他没有告诉我什么时候我们能再见面.
Could you please tell me how you read the new panel?
你能展示给我怎么用这个新的操作盘吗?
None of us knows where these new parts can be bought.
没有人知道这些的新的零件能在哪里买到.
2.动词的宾语从句
大多数动词都可以带宾语从句
We all expect that they will win , for members of their team are stronger.
我们都预料他们会赢,因为他们的队员更强壮.
He told us that they would help us though the whole work.
他告诉我们在整个工作中,他都会帮忙的.
部分“动词+副词”结构也可以带宾语从句
I have found out that all the tickets for the concert have been sold out.
我发现这场音乐会的所有票都买光了.
Can you work out how much we will spend during the trip?
你能计算出这次旅行我们将花费多少钱吗?
动词短语也可以带宾语从句
常见的这些词有:
make sure确保 make up one’s mind下决心 keep in mind牢记
Make sure that there are no mistakes in your papers before you turn them in.
在上交试卷前确保没有任何错误.
可运用形式宾语it代替的宾语从句
①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置.
I think it necessary that we take plenty of hot water every day .
我认为每天多喝开水是有必要的.
I feel it a pity that I haven’t been to the get-together.
我没去聚会,感觉非常遗憾.
I have made it a rule that I keep diaries.
我每天写日记成了习惯.
We all find it important that we (should) make a quick decision about this mater.
我们都认为对这件事马上做出决定很重要.
②有些动词带宾语从句时寻要在宾语与从句前加it
这类动词主要有:hate, take , owe, have, see to.
I hate it when they with their mouths full of food.
我讨厌他们满嘴食物时说话.
He will have it that our plan is really practical.
他会认为我们的计划确实可行.
I take it that you will agree with us.
我们认为你会同意我们的.
When you start the engine, you must see to it that car is in neutral.
开启发动机时, 一定要使汽车的离合器处于空挡位置.
③若宾语从句是wh-类,则不可用it代替
We all consider what you said to be unbelievable.
我们都认为你所说的是不可信的.
We discovered what we had learned to be valuable.
我们发现我们所学到的东西都是有用的.
3.介词的宾语从句
用wh-类的介词宾语从句
We are talking about whether we admit students into our club.
我们正在讨论是否让学生加入我们的俱乐部.
The new book is about how Shenzhou 6 manned spaceship was sent up into space.
这本新书是关于神州6号载人航天飞船是如何升如太空的.
用that,if引导的介词宾语从句
有时候except,but,besides三个介词后可见到that引导的宾语从句
I know nothing about my new neighbor except that he used to work with a company.
对于我的新邻居我只知道他曾在一家公司上班,其他一无所知.
4.形容词的宾语从句
常用来引导宾语从句的形容词有: sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised
I am sure I will pass the exam.
我确信我会通过考试.
I am sorry that I have troubled you so long.
很抱歉我这么长时间在打扰你.
He is glad that Li Ming went to see him when he was ill.
他很高兴在他生病的时候李明能去看望他.
5.if,wheter在宾语从句中的区别
①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if
②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether.
③whether后可以加or not,但是if不可以.
④在不定式前只能用whether.
⑤避免歧异时,我们常用whether而不用if.
6.哪些宾语从句不可以省略引导词that
当that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等动词的宾语时;
当宾语从句较长时;
当主语状语置于主句尾,宾语从句之前时;
当主语谓语动词(包括非谓语动词)与宾语从句之间有插入语时;
当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that不可以省略;
当宾语从句中的主语是this,that或this,that做主语的定语时;
当宾语从句是双宾语中的直接宾语时;
当宾语从句的主语是非谓语动词或主语从句时;
当主语中的谓语动词是固定词组时;
当宾语从句有it做其先行词时;
在直接引语中,转述分句把宾语从句隔开时.
7.宾语从句的否定转移
主句是谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.
I don’t think he will come to my party.而不能说成I think he won’t come to my party.
我认为他不会来我的舞会.
I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是?
如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式.
We find that he never listens to the teacher carefully,does he?
我们发现他从来不仔细听老师讲课,是不是?
8.宾语从句的时态和语序
当主句为现在时或将来时的时候,宾语从句的时候一般不受主句的时态所影响.
当主句为过去时的时候
①从句用一般过去时或过去进行时表示与主句谓语动词动作同时发生
I only knew he was studying in a western country,but I didn’t know what country he was in.
我只知道他当时在西方的一个国家读书,可不知道是哪个国家.
He asked me if I was reading the story The Old Man and the Sea when he was in.
他问我他进来的时候我是否在读.
②从句过去完成时表示该动作发生在主句谓语动作之前
He told me that he had told Mary about the meeting already.
他告诉我他已经把有关会议的事情告诉的了Mary.
③从句谓语用过去将来时表示该动作发生在主句谓语动作之后
The reporter asked if the government would take necessary measures to put down the to-do.
记者问政府是否会采取必要的措施镇压骚乱.
如果从句是一个客观真理,那么从句的时候不根据主句的时态而变化
The teacher said that the moon goes around the earth yesterday.
老师昨天说月亮绕着地球转.
当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首
Who do you think the public might choose as their favorite singer this year?
你认为今年公众会选谁为他们最喜欢的歌手.
宾语从句,即：在主句中担当宾语的从句.学习宾语从句要抓住三要素：连接词、语序和时态.
连接词一般都是that(指事务或人),which（指事）,who（指人）
1．从句为陈述句,常选择连接词that或将that省略,直接与主句相连.
2．从句为一般疑问句,常选择连接词if或whether.在whether…ornot结构中不能用if替换.
3．从句为特殊疑问句,常选择what,when,where,which,who,how等的疑问代、副词作连接词.
注意：当who为主语时,句式为：who+谓语+其他三：判断时态情况：
1.主句是一般现在时,从句为各种时态情况
2.主句是一般过去时,从句为各种相应过去时态注意：从句描绘客观事实,用一般现在时
1. The teacher told the children that the sun＿＿＿＿ round.
A. was B. is C. were D. are
2. I believe that our team＿＿＿＿ the basketball match.
A. win B. won C. will win D. wins
3. I don’t know＿＿＿＿ to visit the old man.
A. whether B. if C. that D. who
The soldiers soon reached( )was once an old temple( )the villagers used as a school.
A.which;where B.what;which C.where;which D.what;where
答：选B,动词reach后接宾语从句,从句缺少宾语,where不可,which引导宾语从句时表疑问含义“哪一个…”而此句中并非疑问含义,不知道哪一座庙宇,而是用what从句表陈述含义,意“过去的一座旧庙宇”；temple后为对其修饰的定语从句,用关系代词which代替,并在从句中作动词used的宾语,use sth. as…“把…用作…
whether + or not
以that引导的从句,that可以省略.