是doing还是to do----讲练20例
1.1)John came and ______me with my English yesterday.
2)John came ______me with my English yesterday.
A. help B. helped C. to help D. helping
3)John came ______ all way home.
A. run B. ran C. to run D. running
答案：1)B 2)C 3)D。 句1) helped 与came 构成并列谓语；句2) to help作目的状语；句3) running 作方式状语。
2.1)She looked forward to seeing her parents.
2)She looked forward to see what was happening.
析：句1) look forward to意为“期望做某事”中的to是介词只能用v-ing作宾语，类似的有stick to, object to, refer to, belong to, devote to, be/get used to, get down to ,pay attention to, look up to, see to, be familiar to, admit to; 句2) look forward 意为“向前看”；to see 作目的状语。练习：
(1)Every minute is made full use of ______ our lessons.
A. studying B. studied C. to study D .being studied
(2)The way they talked ______ the problem seemed impossible.
A. about settling B. to settle C. of settling D. about to settle
(3)The day we looked forward to ____ at last.
A. come B. coming C. comes D. came
3.1)He did what he could to calm her.
2)He spent as much time as she could going over her lessons.
析: 句1)中could后省略了do, to calm做目的状语。句2)中she could作定语，could 后仍省了do，整句是spend……(in)doing……结构。练习：
(4)They did all they could_____ the old man from the fire.
A. save B. to save C. saving D. to saving
(5)She spent all the time she had_____ scientific researches .
A. made B. to make C. being made D. making
4.1)Sorry, I forget to return the book, I’ll go back to take it.
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2)I forget returning her money, so I gave her the money again.
析：forget, remember, regret等动词后跟动名词的一般式、完成式或动词不定式的完成式表示已完成的动作，意为“忘记/记起/后悔（已做过的事）。其后跟动词不定式的一般式,则表示未完成的动作，意为”忘记/记住/遗憾（要做的事情）。练习：
(6)She didn’t remember ______ him before (88NMEET)
A. having met B. have met C. to meet D. to having met
(7)----The light in office is still on. ----Oh, I forgot ____.(91NMET)
A. turning it off B. turn if off C. to turn it off D. having turned it off
(8)----You were brave enough to raise objections at the meeting.(95NMEt)
----Well, now I regret ________ that.
A. to do B. to be doing C. to have done D. having done
5.1)Sorry, we don’t allow taking the magazines out of the library.
2)Sorry, we don’t allow anyone to take the magazines out of the library.
析：advise, allow, permit, forbid, encourage等后只跟v-ing 作宾语，作补足语时要用to do。 练习：
(9)Mother advise _____ before deciding to accept the job.
A. waiting B. to wait C. wait D. will wait
(10)Will you permit me______ to the cinema ?
A. going B. to go C. go D. to going
(11)We are forbidden ______ in the room.
A. smoking B. to smoke C. being smoked D. to be smoked
6.I like swimming , but I don’t like to swim today.
析：like后跟to do表示具体某一次的动作，跟v-ing表示习惯、经常性的动作。但在feel like后须跟v-ing , 在would / should like后须跟to do. 练习：
(12)----Do you like ____ there or shall we take a bus ?
----I’d like ______, But Since there isn’t much time left. I’d rather you ____a taxi.
A. walking , walking , take B. walking , to walk , took
C. to walk ,walking ,took D. to walk , walking , took
7.He was heard _____ in the next room at 6 this morning.
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A. to sing B. singing C. sing D. to be singing.
析：答案：B。感观动词hear , watch , feel , notice等均可用to do或v-ing作补足语，前者表示做某一动作的全过程，后者表示某一动作正在进行。练习：
(13)The missing boys were last seen _____ near the river (94NMET)
A. playing B. to be playing C. play D. to play
(14)Though I have often heard this song _____ I have never heard you ___it.
A. being sung , sang B. sang ,singing C. sung , sing D. to be sung , to sing
8.1)I stopped to have a look at the old man and found he has stopped breathing.
2)We should stop our air from being polluted.
3)We must stop the pollution to live longer.
析：stop to do sth “停下来做另一件事情” ,stop doing sth “停止做某事”.
stop / prevent / keep……(from) doing sth意为“防止……做某事”如句 2)。
句3）中的to live作目的状语。练习：
(15)The teacher told the students to stop _____ to him.
A. to write and listen B. writing and listening
C. to write and listening D. writing and to listen.
(16)She reached the top of the hill and stopped___ on a big rock by the side of the
path.(90NMET)
A. to have rested B. resting C. to rest D. rest.
9.The policeman consider the young man to have robbed the bank. So they are
considering arresting him.
析：consider后的宾语要求用v-ing，不用to do。但consider , think , believe，
suppose , understand , imagine , feel等表示主观意念、心理状态的动词常用to
be、不定式的进行式或完成式作补足语（很少用主动一般式）练习：
(17)We are considering _____ a new plan.
A. making B. to make C. to be making D. to be made
(18)Charles Babbage is generally consider____ the first computer.(93NMET)
A. to invent B. inventing C. to have invented D. having invented.
(19)What do you imagine _____ in the past ten days.
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A. has happened B. happened C. happening D. to happen
10.1)I can’t help ___ the work for her because she is too busy.
2)I can’t help ___ the work for her because I am too busy.
答案：1) C 2)A。can’t help doing sth“忍不住（情不自禁）做某事”，can’t
help to do sth“不能帮助做某事”。练习：
(20)Don’t take the medicine; it can’t help ____ rid of your cold.
A. to get B. getting C. gets D. to getting
11.I want _____ you that your hair wants______
A. tell , being cut B. to tell , cutting C. telling , cutting D. telling , to be cut
答案：B。want , need , require可跟to do作宾语（主动表示主动、被动表
示被动），也可跟v-ing 作宾语（主动表示被动）。
12.1)He had the boy _____ the box for him.
2)He had the boy _____ earth all the morning.
A. carry B. to carry C. carrying D. carried
答案：1)A 2)C。 have, make , let可跟不带to 的动词不定式作宾语补足语，
意为“使……做某事”，也可跟v-ing作补足语, 意为“使……一直做某事”
练习：
(21)Whom would you rather _____ with you to the theatre.
A. have to go B. have go C. to have go D. to have to go
13.1)He made up his mind ______ a teacher.
2)Do you mind ______ a teacher.
A. to be B. be C. being D. was
答案：1)A 2)C 。made up one’s mind to do sth “决心做某事”，mind doing
sth.“介意做某事”
14.1)He is used to _____ early.
A. getting up B. get up C. got up D. geting up
2)Skin of snakes ___ some kinds of musicial instrument.
A. is used to make B. are used to make
C. is used to making D. are used to be made
答案：1)A 2)A 。be used to doing sth “习惯于做某事”,be used to do“被
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用来做某事”
15.1)I like music, but my sister enjoys ____ the piano.
2)I like music, but what my sister enjoys____ the piano.
A. playing B. to play C. is to play D. play
答案：1)A 2)C。enjoy后须跟v-ing作宾语如句1)。句2)what my sister enjoys
是主语从句。
16.1)He started /begin _______ English in 1980.
A. learn B. to learn C. learning D. to be learned
2)When I was still a child I began ______-.
A. swim B. to swim C. swimming D. swam
答案：1)B C 2)C。begin / start 均可跟to do和v-ing作宾语，意思区别不大
如句1)。跟v-ings指开始“长期性、习惯性、持续性的动作如句2)。另在
这三种情况下 跟to do较好：①主语是物不是人时②begin /start用于进
行时态时③其后的非谓语动词为精神或心理活动时。练习：
(22)The ice began / started ______.
A. melting B. melt C. to melt D. melted
(23)He started _____ who had done it.
A. to wonder B. wondering C. wonder D. wondered
17.1)She had nothing to do but____ in bed.
A. cry B. crying C. to cry D. cried
2)He wanted nothing but _____ here.
A. stay B. staying C. to stay D. stayed.
3)He thought of nothing but ______ his homework as soon as possible.
A. finish B. finishing C. to finish D. finishes
答案：1)A 2)C 3)B。but（除…..外）前面的句子有do, but后的不定式无to，
前面的句子无do，but后的不定式带to 如句1),句2)。若but前的动词只跟
v-ing ，but后也须跟v-ing如句3)。另can but(只能)，can not but(只好做)，
can not help but(不得不)后只跟动词原形。but还可用作关系词，相当于
who(that)……not。 练习：
(24)There was no choice but_____
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A. sleep B. to sleep C. sleeping D. slept
(25)There is no one but_____ it.
A. know B. to know C. knows D. knowing
(26)He is all but(=almost) _______.
A. drown B. drowns C. drowning D. drowned
18. 1)She telephoned rather than ______
2)She preferred telephoning rather than _______.
3)He decided to telephone rather than_____
A. writing B. to write C. write D. wrote.
答案：1)D 2)A 3)ABC。Rather than(=and not)并列连词，连接两个相同的
词项，即前后须是同类的句法单位，但其前是to do 时，其后可跟动词
原形、带to的不定式或v-ing. 练习：
(27)Rather than _____ on a crowded bus, he always prefers ___ a bicycle .(94NMET)
A. ride , ride B. riding , ride C. ride, to ride D. to ride , riding
19.1)I’m busy ______ him with his English.
2)I’m too busy ____ him with his English.
A. help B. helping C. helped D. to help
答案：1)B 2)D。be busy doing sth“忙于做某事”. 句2）是too…..to结构。
20.1)I got to his house , to find the door was locked and nobody was in.
2)I got to his house ,finding the family were at home.
析：to do和v-ing均可作结果状语，前者表示发生了某种意想不到的结果
或事情的结果与原来的意图相违背，后者表示谓语的动作或状态演变的顺
呼自然的结果。练习：
(28)He worked hard , (only) _____ in the end.
A. failing B. succeed C. to fail D. to succeed
(29)He fired , one of the robbers.
A. to kill B. killing C. kill D. missing
练习答案：(1)C (2)D (3)D (4)B (5)D (6)A (7)C (8)C (9)A (10)B (11)B (12)B (13)A (14)C (15)D (16)C (17)A (18)C (19)A (20)A (21)B (22)C (23)A (24)B (25) C (26)D (27)C (28)C (29)B 字数：2，475 中文：950 英文：1，525 行数：181
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