do sth.的用法,to do sth.的用法.哪些词可以两种用法都可以

you'd better (not)do sth 意思是可以加not也可以不加not
当然加不加意思就相反啦
you'd better do sth 最好做某事
you'd better not to do sth最好别做某事

to do sth是不定式做主语,有时可表目的,那就会=in order to do sth
do sth放在句首表示祈使句,如果不是祈使句的话,那就不能有do sth了,只能有doing sth表示动名词做主语．祈使句：例如：Make yourself at home!这里的do 是make 这个句子就是祈使句,意思是：请自便!

make do sth,have do sth,would rather(not) do sth,had better(not) do sth,help to do sth,want to do sth,ask to do sth,tell to do sth,

doing

我来告诉你哦
SB TO DO 的是hope,agree,choose,decide,except,help,learn,manage,need,offer,plan,pretend,promise,want,wish,would like
sb doing的是
enjoy,admit,avoid,deny,dislike,enjoy,finish,give up,keep,mind,pratice,require,suggest,stop
只能背那么点了
还有哦
情态动词后面是原型
比如：can,must,could,should等等
(*^__^*) 嘻嘻……
选我做最佳哦

influence后不跟不定式也不跟动名词,influence on sth

supposed to

to do sth
lucky是形容词,形容词后加动词一般用to do

没关系,我帮你!
后面只接不定式的动词
hope, wish, help, decide, ask, learn, teach, choose, agree, plan, encourage, tell, use, invite, send, fail, refuse, offer, afford, preptend, promise, 以及词组would like, get/be ready, do/try one’s best, make up one’s mind等.注：help后接不定式时,to可有可无.
后面只接动名词的动词
enjoy, finish, practise, keep, mind, spend, miss, imagine, be busy, have fun, have problems, feel like, give up, can’t help, be worth, look forward to, pay attention to等.
初中就这些词了.
接原形的有：使役动词（“使,叫,让”）make, have, let
感官动词： see, look at, watch, listen to, hear, find
勤着背背,没事看看,熟了就好了.

对现在的虚拟用一般过去时态
比如：如果我是你,我就去参加那个晚会
If I were you,I would go to the ball；
对过去的虚拟一般用过去完成时态
比如：如果我当时听了你的劝告,就不会被骗了
If I had followed your advice,I wouldn't have been deceived.

It's hard to win the first prize.
要赢得一等奖是很难的.
I often help my mother do some housework.
我经常帮助我妈妈做家务.

没有固定的语法,只是词汇的习惯用法而已.归纳如下：
A.跟不定式（to do）作宾语的动词：
want,wish,hope,manage,pretend,decide,learn,agree,expect,demand,long,ask,
care,choose,dare,fail,offer,plan,prepare,promise,refuse,desire,happen,
appear,intend,would like to,be said to,
B.跟动名词(doing)作宾语的动词：
suggest,admit,finish,avoid,mind,enjoy,delay,practice,excuse sb.for,
advice,consider,escape,miss,risk,dislike,imagine,permit,require(表被动),
appreciate(感激),understand,insist on,look forward to,get down to,
devote oneself to,prefer…to… object to (反对),put off,apologize to sb.for,
give up,forgive sb.for,be worth,be fond of,be good at,be slow in,be active in,
be afraid of,be tired of,be busy,succeed in,prevent/stop/keep sb.from,spend time (in),have difficult/trouble in,It’s no use/good,be pround of,instead of.
C.跟动名词(doing)和动词不定式（to do）均可的词,含义无区别：
start,begin,continue,prefer,like,love,hate,后跟to do 表具体和特定的动作,后跟 doing 表泛指的动作
D.跟动名词(doing)动词不定式（to do）均可的词,含义区别较大：
1.stop to do 2.mean to do 3.try to do 4.agree to do
stop doing mean doing try doing agree to sb doing
5.be afraid to do 6.remember to do 7.forget to do 8.allow/permit/advise sb.to do
be afraid of doing remember doing forget doing allow/permit/advise doing
9.regret to do 10.want to do 11.need to do 12.go on to do
regret doing want doing (表被动) need(表被动) go on doing
13.can’t help to do 14.forbid sb.to do=forbid sb’s doing
can’t help doing forbid doing

must 是情态动词,你就把它想成跟can ,may 一样,后面肯定加do.所以must 的结构是 must do sth.
-----------------------------------------------------over-------------------------------------------------------------

It takes sb. + 时间段 + to do.反过来,Doing sth. takes sb. + 时间段.

I help my grandfa to water flowers in the morning.

do,有了will不就是将来时吗,后面干嘛还要用does一般现在时呢,句子时态不救乱了吗

1.let 后加to do sth 还是 do sth：
let sb do sth,让某人做某事.用动词的原形.
2.尽力做某事：try to do sth.
3.在另一边：on the other side (of sth)

It is rainy outside,you had batter take your umbrella.
It is dangerous,you had batter not to do it.

1.B
2.B
她的儿子在解出这个问题上有困难
3.to choose
4.try our best to deal with

帮助某人做某事

He often makes us laugh.他经常让我们大笑.
Let us go home.让我们回家吧.

He is reading a book.
I am asking some problems on the Internet.
Are you listening ot me now?
是这种的么,是的话我再补充.

建议某人做某事
（从句用了虚拟语气,所以用should+动词原形,其中,should可以省略）.
urge是建议,强烈要求的意思

look forward doing sth 望采纳！！^_^

助动词do,did,does
情态动词：can,may,must,should,could,might,shall等
感观动词：look,listen,hear,see,watch,feel后表看到,听到整个动作过程的时候接动词原形suggest,request等后面接虚拟语气形成suggest...should do sth.时
用动词原形还有will,be going to,used to等
使役动词have /make/let后也加动词原形
why not do sth

Do Sth by yourself

find sb doing sth意思是发现某人正在做某事.
find sb do sth 意思是发现某人做了某事,已经做完了.
just now 是刚才的意思．．．是过去时．所以那个题答案是lie

Review of Unit 1－6
I. language goals （语言目标）
1. Talk about how often you do things 谈论做事情的频率.
2. Talk about your health. Make suggestions.
谈论健康话题以及提出建议.
3. Talk about future plans.
谈论未来的计划/打算.
4. Talk about how to get to places.
谈论到达某地的方式.
5. Learn to make invitations, say yes to invitations and say no to invitations and give reasons.
学会发出,接受和拒绝邀请并说出原因.
6. Learn to talk about personal traits and how to compare people.
学会谈论个人品质以及如何比较人们.
II. Key Phrases （重点短语）：
1. how often 多长时间一次
2. junk food 垃圾食品
3. a lot of 许多
4. hardly ever 很少
5. start with 以…开始
6. try to do sth. 试着去做某事
7. look after 照料
8. be kind of unhealthy 有点不健康
9. once a day 一天一次
10. twice a month 一个月两次
11. be good for 对…有好处
12. once in a while 偶尔
13. see a doctor / dentist 看病/看牙医
14. get a cold / fever 感冒/发烧
15. have a stomachache 肚子疼
16. have a toothache 牙疼
17. have a sore throat 嗓子疼
18. lie down and rest 躺下休息
19. drink hot tea with honey 喝加蜂蜜的热茶
20. be stressed out 紧张
21. listen to … 听…
22. get tired 变的疲劳
23. keep healthy 保持健康
24. at the moment 此刻；目前
25. watch TV 看电视
26. play basketball 打篮球
27. babysit her sister 照看她的妹妹
28. visit my friend 拜访我的朋友
29. relax at home 在家放松
30. sports camp 运动野营
31. something interesting
32. go hiking / camping / fishing / shopping / sightseeing
去徒步旅行/野营/钓鱼/购物/观光
33. go away 离开
34. get back to school 返回学校
35. stay for a week 呆一个星期
36. go bike riding 骑自行车兜风
37. takes walks 散步
38. rent videos 租录像带
39. sleep a lot 睡得多
40. think about 考虑
41. take the subway / bus / boat / plane
乘地铁/公共车/小船/飞机
42. get to 到达
43. go by bus / plane / boat 乘公共车/飞机/小船
44. train / subway / bus station 火车/地铁/公共车站
45. bus ride 乘公共车的旅行
46. ride a bike 骑自行车
47. bus stop 公共汽车站
48. on foot 步行
49. leave for 离开去…
50. school bus 学校班车
51. the early bus 早班车
52. be different from 与…不同
53. half past six 六点半
54. in North America 在北美洲
55. a quick breakfast 快捷的早餐
56. need to do 需要做…
答案补充
57. more than 多于
58. play soccer 踢足球
59. baseball game 棒球比赛
60. school team 校队
61. come over to 过来到…
62. the day after tomorrow 后天
63. be good at 擅长于…
64. two years ago 两年前
65. be outgoing 外向的
答案补充
66. all the time 一直
67. in some ways 在一些方面
68. look the same 看起来一样
69. talk to everyone 与大家谈话
70. make me laugh 使我笑
III. Key Sentence Structures 重要句型：
Unit 1:
1. －What do you usually do on weekends?
－I usually go to the movies.
2. －What does he sometimes do on weekends?
－He sometimes surfs the Internet.
答案补充
3. How often do you exercise?
I exercise once a week.
4. How often does she eat vegetables?
She eats vegetables three times a day.
5. Most of the students go to the beach every year.
6. It makes a big difference to my grades.
7. My eating habits are pretty good.
Unit 2:
1. What’s the matter?
What’s wrong?
What’s the trouble?
2. I’m not feeling well. I have a cold / fever/ stomachache / sore throat.
/I have a lot of headaches.
答案补充
3. Maybe you should see the doctor / dentist.
You should drink some hot tea with honey.
4. You shouldn’t eat anything for 24 hours.
5. Don’t get stressed out. It will make you sick.
6. I’m sorry to hear that you are not feeling well.
Unit 3
1. －What is she doing for vacation?
－She is babysitting her little sister.
－That sounds nice / interesting.
2. －When are you going?
－I’m going on Monday.
答案补充
3. －Where are they going?
－They are going to Tibet.
4. －Who is she going with?
－She is going with her parents.
5. －How long is he staying.
－He is staying for a week.
6. －How is the weather there?
－I’m hoping the weather will be nice.
7. He is leaving for Hong Kong the first week in June.
答案补充
3. －Where are they going?
－They are going to Tibet.
4. －Who is she going with?
－She is going with her parents.
5. －How long is he staying.
－He is staying for a week.
6. －How is the weather there?
－I’m hoping the weather will be nice.
7. He is leaving for Hong Kong the first week in June.
8. Have a good time.
答案补充
Unit 4:
1. －How do you get to school?
－I get to school by bus.
2. －How does he go to work?
－He usually walks to school.
3. －How long does it take?
－It takes about twenty minutes.
4. －How far is it from his home to school?
－It’s three miles.
5. What do you think of the transportation in your town?
答案补充
Unit 5:
1. －Can you come to my party on Wednesday?
－Sure, I’d love to. / I’m sorry, I have to have a piano lesson.
2. －Can she go to the movies on Saturday?
－No, she can’t. She has to help her mom.
3. －Can you go to the concert on Monday?
－When is it?
－It’s at four o’clock on Friday.
4. Thanks a lot for the invitation.
5. I’m going to study for a test this evening.
6. What’s the date today?
答案补充
初二语法复习
1. so+谓语+主语：…也一样. 谓语:be动词/助动词/情态动词
2. so+主语+谓语:的确如此,真的这样.
3. help yourself/yurselves to．．．请随便吃点．．．
4. 发现sb做sth : find sb doing sth
5. 不完全同意I don’t really agree.
完全不同意I really don’t agree.
6. 或者．．或者．．．either…or…..就近原则
既不．．也不．．neither…nor….就近原则
既．．．．又．．．both…and….谓语用复数
7. 看起来,似乎It seems/seemed that…..
8. 由于．．．而闻名be famous for….
1. There be 结构
there be 结构和have has结构翻译成汉语都是“有”的意思,但含义不同.have （has）表示“某人拥有某物”,there be而结构表示“某人或某物存在于某地或某时”.
There are some apple trees in the garden.
We have some apple trees in the garden.
there be 结构中的动词 动词与后面的主语在数的方面保持一致.如果句中的主语是并列主语,即有两个或两个以上的人或物作主语,那么一般说来动词的数应与第一个主语的数保持一致.如：
There is a green apple and two oranges in the fruit bowl.
There are two oranges and a green apple in the fruit bowl.
2. I think he is very old.
（1）否定句
一些表示个看法的动词,如等引导宾语从句时,如果从句为否定句,那么否定形式应该表现在主句中,即否定这些动词本身.如：
I don’t think he is very old.
I didn’t think Wang Hai would enter for the high jump.
（2）反意疑问句
这些动词带有宾语从句构成反意疑问句时,根据主句主语的不同可分为两种情况：当主语是第一人称时,则缩略问句应与宾语从句的主、谓保持一致,但如果主句表现为否定为形式时,缩略问句要用肯定形式；当主句的主语是第二或第三人称时,缩略问句应该与主句保持一致.如：
I don’t think he has finished the work, has he?
You think my brother told a lie yesterday, don’t you?
3. That’s right. That’s all right. All right.
“That’s right.”表示“对、正确”.一般在对话中用于肯定对方的回答或表示赞同对方的说法. “That’s all right.” 是回答感谢话或道歉话的用语,意思是“没关系,不用谢”,相当于“You are welcome”、“That’s OK”或 “Not at all”“All right”一般用于同意别人的请求,是“好的、可以”的意思.如：
A: I think the correct answer is two. B: That’s right.
A: I am sorry I left your notebook at home. B: That’s all right.
4. He’s up there in the tree with Bill.
这句话的主语是“he”,“with Bill”不是主语,而是表示一种伴随状态,所以请注意谓语要和主语在数和人称称保持一致.一般在句子中我们经常用“with+名词”这种结构表示“有、带着或伴随着”的意思.如：
He went to the concert with me.=He and I went to the concert.
She answered me with a smile.
He went to sleep with the bedroom light on.
5. It’s time…
这一句型用来表示“是...的时间了,该...了”.一般有以下几种形式：
(1) It’s time to +动词原形
(2) It’s time for sb. +动词原形
(3) It’s time for +名词
如：It’s time to go to school.=It’s time for school.
It’s time for us to go to school.
6. What’s wrong with you?
这句话的意思是“你怎么了?”,既可表示问身体有什么不舒服,也可以表示问出了什么事,介词后还可以跟物品名称,表示问某样东西怎么了（是否出了什么毛病）.与其类似的句型还有：“What’s the matter with…? / What’s the trouble with…?”这三个句型在使用时要注意wrong是形容词,所以在它有前面不加冠词,而matter和trouble都是名词,在它们前面要加定冠词.如
What’s wrong with Bill?
What’s the matter (the trouble) with Bill?
7. They looked like saucers.
在本句中like是个介词,解释是“像...”,常和动词 be或 look连用.请注意不要错把它当成动词“喜欢”.
13. You had better come early next time.
此句中的had better是一种习惯用法, 意思是 “最好…”成, 一般用来表示向别人提建议或劝告.这一句经常可以与祈使句或带有情态动词should 的句子进行替换.在使用had better 时请注意以下几点: (1) 它没有人称、时态和数量的变化.（2）它的后面只能跟动词原型.（3）它的否定式为had better not,后面同样只能跟动词原型在疑问句中,通常是把had提到主语之前.如
We had better not go fishing on such a windy day.
14. be + adj. + (for somebody) to do (something)
在此句型中谓语动词一般不用被动语态.同时请注意动词不定式都有动宾关系, 因此如果不定式中的动词是不及物动词,那么它的后面一定加上适当的介词.
The problem is not very difficult for me to work out.
15. I hope… / I wish…
Hope 与wish 都可以解释为“希望”,但它们所表达的意思和用法都有所不同. 在意思上Hope所表达的愿望是比较实际的,是可能实现的,而 wish所表达的是不太可能实现的梦想, 所以wish引导的宾语从句大多用虚拟的语气.在用法上它们的唏不完全相同,区别在于wish可以用于wish sb. to do, 而hope没有这种用法.：,
They hope to win the game in the afternoon.
We all wish him to bring us the good news.
16. My dad will come back in two days.
“in + 一段时间”常用来表示将来的一段时间以后,对它提问用 “how soon” .如果表示将来的某个时间点以后,一般用“after +某个点时间”,对它提问要用 “when / what time”.如：
How soon will you finish your homework?
I will finish my homework in an hour.
When / What time will you come back?
I will come back after dinner.
17. I’m afraid…
I’m afraid…常用于表达与别人意见不同后拒绝别人的请求,有时也可以用在表示不肯定或推测的话前面,是口语中十分常用的短语.它的后面可以接从句,也可以加或.如
A: Must I hand in the report today?
B: I’m afraid you must
“be afraid of +名词或动名词”的用法也很常用.表示“害怕”.如：
She is afraid of going out at night.
18. Sorry, I forgot to tell you that.
在英语中有一些动词,它们的后面可以跟动词不定式,也可跟动名词,而且两种情况所表达的意思不同,如：
（1）与的用法基本相同.它们后面跟不定式时表示不定式所表示的动作还没发生；如果后面跟动名词,那么表示动作已经发生过了.如：
He forgot to return the money to me. 他忘记还钱给我.（表示钱还没有还.）
He forgot returning the money to me.他忘记已经把钱还给我了.（表示钱已经还了,但他忘记了这件事.）
(2) stop后面跟不定式表示停下来去做别一件事,如果加动名词就表示停止这个动作.如：
Please stop talking and listen tome. 请不要讲话,听我说.
Please stop to have a rest 请停下来休息一下.
19. This one is much better than that one.
英语中的形容词或副词在使用时都不得有比较结构.一般来说它们有三个级别：原级、比较级和最高级.
（1）原级比较
初中阶段常用的原级比较句型为：as…as…, not as (so)…as….使用时注意它们的含义,as…as… 表示“和...一样”,而它的否定结构表示“不如...”.如
Is the Huanghe River as long as the Nile?
He does not work so hard as his brother.
（2）最常用的比较级用法是“比较级别+ than ”.另外两个相同的比较级用连接起来可以表示“越...越...”.如果要表示“两个中较为...的一个” ,在比较级之前要加一个the,一般可以修饰比较级的有：much, far, a little, a bit, even, still.
It is even colder than it was last month.
More and more people are helping fight pollution.
His handwriting is better than any other student in his class.
（3）使用最高级的结构一般为“归高级+比较范围”.这个比较范围内应饱含主语.如果比较范围与主语是同类的话,可以用等介词引出,如果他们不是同类的话,一般用引出.一般来说,形容词的最高级前一定要加定冠词,而副词的最高级前可以加也可以不加.如果要表示“第几...”,可以在最高级前面加序数词.如：
Among all the sports I like soccer best.
I am the eldest girl in my family.
20. (not)…until (till)
在这一句型结构中until (till) 引导的是时间状语（从句）,因此从句中不能用将来时,只能用一般现在时代替.如果主句的谓语动词或until (till)前面的动词是一个瞬间动词,那么该动词必须用否定形式.一般地来说until和till的意思与用法都基本相同,唯一的区别在于可以置于句首,而不能.如：
He watched TV until (till) his parents came back.
We couldn’t go back home until the rain stopped.
21. be pleased…
这个短语后面既可以另动词不定式,也可以加适当的介词. 加不定式be pleased to do表示“做...很高兴”, 而加介词 be pleased with / at / by...表示“对...感到很高兴,很满意.”如：
We are pleased to plant trees by the river every spring.
My parents are pleased with my hard work.
22. You should go out instead of staying at home.
Instead of 可解释为“代替,而不是”,介词 of后面可以跟名词或动名词.有时没有必要说出被代替的人或物,也可以只用instead
He stayed at home to read the book instead of going out to play basketball.
If you don’t want to go, I can go there instead.
23. I don’t like it any more.
No more, not any more, no longer, not any longer这几个短语都表示“不再...,再也不...”.在使用时请注意它们在句子中的位置.如：
She ins’t a teacher any more = She is no more a teache

以see为例:
被看见:be seen +to do
看见过(强调事实)see +do
看见正在做(强调过程)see+doing.

英语中“make/have/let”叫做使役动词,用法相似：
have sb.do sth.使某人做某事
= make sb.do sth.
= let sb.do sth.
但 get 用法与它们不同：
get sb.to do sth.使某人做某事
---绝对正确!

动词suggest有如下一些用法:
一、 有"建议"的意思.advise, propose 也有此义,请比较它们用法的异同:
1) 都可接名词作宾语
She suggested / advised / proposed an early start. 她建议早一点出发.
We suggested / advised / proposed a visit to the museum the next day. 我们建议明天去参观博物馆.
2) 都可接动名词作宾语
I suggested / advised / proposed putting off the sports meet. 我建议将运动会延期.
They suggested / advised / proposed waiting until the proper time. 他们建议(我们)等到恰当的时机才行动.
3) 都可接that 宾语从句,that从句用should+动词原形,should可以省略.
She suggested / advised / proposed that the class meeting (should) not be held on Saturday. 她建议班会不要在星期六举行.
We suggested / advised / proposed that he (should) go and make an apology to his teacher. 我们建议他去向老师道歉.
4) advise 可接动词不定式复合宾语,propose 可接不定式作宾语.
I advised him to give up the foolish idea. = I suggested / proposed his / him giving up the foolish idea. 我建议他放弃那愚蠢的念头.(suggest和propose在口语里可接动名词的复合宾语).
We proposed to start early. = We proposed starting early. 我们建议早一点出发.(接不定式不用suggest和advise)
二、 有"提出"的意思.如:
He suggested a different plan to his boss. 他向老板提出了一个不同的计划.
Xiao Wang suggested a way to solve the problem. 小王提出了一个解决这个问题的办法.
三、 有"暗示、表明"的意思.其主语往往是事物,而不是人.
1)接名词或动名词作宾语.
The simple house suggested a modest income. 这座简朴的房子表明(房主的)收入并不高.
Her pale face suggested bad health. 她脸色苍白,看来身体不好.
The thought of summer suggests swimming. 一想到夏天就使人们联想到游泳.
2)接宾语从句,从句用陈述语气.如:
The decision suggested that he might bring his family. 这个决定表明他可以把家属带来.
The expression on his face suggested that he was very angry. 他脸上的表情表明他很生气.
四、 在主语从句It is suggested that... 及名词suggestion 后面表示具体建议的表语从句、同位语从句都应用should+动词原形,should可以省略.如:
It was suggested that we (should) give a performance at the party. 人们建议我们在晚会上表演节目.
His suggestion was that the debts (should) be paid off first. 他的建议是先把债务还清.
The doctors made a suggestion that the new hospital (should) not be set up on the hill. 医生们建议不要把新医院建在山上.

Let's

ember?是remember吧.
应该是remember doing something

To do sth:1.want to do sth(想要做某事）
2.decide to do sth(决定做某事）
3.ask sb to do sth(要求某人做某事）
4.promise sb to do sth(答应某人做某事）
5.tell sb not to do sth(告诉某人不要做某事）
6.tell sb how to do sth(告诉某人怎样做某事）
7.come here to do sth(来这儿做某事）
8.be glad to do sth(高兴做某事)
9.begin to do sth(开始做某事）
10.help sb to do sth(帮助某人做某事）
11.be ready to do sth(准备做某事）
12.It's time to do sth(该～时间了）
13.stop to do sth(停止做某事）
14.try to do sth(尽力做某事）
Do sth:
1.want do sth(想要做某事）
2.see sb do sth(看见某人做某事）
3.hear sb do sth(听到某人做某事）
4.let sb do sth(让某人做某事）
5.let sb not do sth(让某人不要做某事）
6.had better do sth(最好做某事）
其他：
1.give sb sth=give sth to sb(给某人某物）
2.be busy doing sth(忙于做某事）
3.send sb sth=send sth to sb(送给某人某物）
4.go to a place to do sth(去某个地方做某事）
5.like to do sth=like doing sth(喜欢做某事）
6.make sth for sb(为某人做某事）
7.halp sb with sth(在某方面帮助某人）
8.keep sth(保留某物）
9.hand sth to sb(把某物递给某人）
10.hand in sth to sb(上交某人某物）
11.show sb sth(向某人展示某事）
12.pass sth to sb(把某物递给某人）
13.put sth under the tree(把某物放在树上）
14.stop sth(停止某事）
15.stop to do sth(停下来再做某事）
16.wait for sth(等某人或物）
17.finish sth=finish doing sth(完成某事）
18.come out with sth（拿着某物出来）

V+(sb) do sth help do sth 这是英语中 唯一 可以跟 动词原形 作宾语 的动词have/make/let/see/watch/hear /feel 这是秃头不定式作宾补V+(sb) to do sthdecide,plan,want,hope,wish,offer,fail,plan,learn,pretend,r...

（it was） behind prison bars（ that） he imitated talks with others That（引导的是个定语从句） eventually led to the release it was……that 是个强调句式,划去化简可省略.

have got 就是拥有的意思,和have,own,prosess基本意思是一样的

help sb (to) do sth中的sb可以省略
有help to do ,help do sth

D
原句：Chongqing lies at the meeting place of the Yangtze River and the Jialing Rver .
重庆坐落在两条河的交汇处.
希望帮到你.

watch sb.do sth.和 watch sb.doing sth.中,do sth.和 doing sth.都是作宾补,主要区别是,不定式 do sth.指整个动作完成了,动作的全过程；doing sth.指动作正在进行,全部动作中的一部分.例句：We watched them play b...

填to
1.跟不定式做宾补：ask/ tell /let /ask/ request/ order/ invite /expect /encourage /advice/ promise /warn/ allow /remind/ help sb.to do sth.

一般可以,如I use a computer to play computer games.
I play computer games with a computer 祝你学习进步,更上一层楼!(*^__^*)

to do sth

to do
祈使句 do
something 或者 to do

三句都有用到,但第一句有错,改为I learn math by filling in many questions

建议某人做某事
特殊虚拟语气,从句当中用should+do,其中should可以省略.

Better后接省略to的不定式,句型为Better do sth.意为最好做某事.
Better ask them go astray.此句后半部分有错误,应该是ask sb to do sth.

e no use doing sth是肯定的,绝对没错.
例如 It is no use watching too much TV.
看太多电视是没用的
这是固定搭配
所谓的接to do sth,是用在be used to do sth被用来做某事
It is no use trying to persuade him to have a holiday because he is a workaholic.(P53) 其中用了 It’s no use doing sth.(做某事没用 / 只是白费力气)句型.在这个句型中,动词-ing形式trying to persuade him to have a holiday是主语,it 是形式主语.这种动词-ing作主语,it 作形式主语的句型还有：
1.It is no good doing sth.做某事不好 / 没用 / 不行
2.It’s a waste of time / money doing sth.做某事是白费时间 / 金钱
3.It’s fun doing sth.做某事很有趣

1、as good as意思是“和.一样好”
as well as有两个意思,一个是“和”,相当于and;另一个跟as good as意思一样,不过是形容动词了.
句式经常是,A is as good as B,意思就是“ A和B一样好”
A do sth.as well as B.意思就是“A做某事做得和B一样好”,也可以是“A和B做了某事”具体意思要看语境.
2、help sb___do sth,help的用法是,可以用help sb to do sth,也可以是
help sb do sth.后者更常见.
3、It take me 30minutes to walk to shool.等于
I spend 30minutes walking to school.
4、recently多见于现在完成时态,尤其是现在完成时的进行时.多是谁谁谁最近一直怎么样的句式.