A. that B. in which C. by which D. how
四、动词不定式的省略与保留 1. 把下列句子翻译成英语. (1) 我看着她上了车。
_____________________________________________________________ (2) 我看见这个女人进了一家银行。
_____________________________________________________________ (3) 我们经常听到她唱这首歌。
_____________________________________________________________ (4) 她离开屋子你注意到了吗?
_____________________________________________________________
◆感官动词和使役动词在主动语态中不需要带to，即我们常说的“一感二听三让五看”： feel, listen to，hear , let，make，have, look at，see，watch，notice，observe； 用括号中词的适当形式填空。
(1) Lily heard someone _________ (sing) a song in the next room. (2) His mother made him __________(clean) the floor every day. (3) The woman was seen __________(enter )a bank.
(4)They were heard ___________( break) a glass in the next door. 2. 把下列句子翻译成英语或英语。 (1) 你最好告诉她真相.
_____________________________________________________________ (2) 我宁愿睡觉，也不愿打牌。
_____________________________________________________________ (3) 你看起来很疲倦，何不好好休息一下呢？
_____________________________________________________________ (4) 我们除了在那儿等待之外，没有其它的办法。
_____________________________________________________________ 3. 把下列句子翻译成英语。
(1) Rather than walk, I decided to go home by taxi.
_____________________________________________________________
(2) Compared with women, men always prefer to stay at home rather than spend much time shopping .
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_____________________________________________________________ (3) Would you please give me a cup of tea？
_____________________________________________________________ (4) The boy cannot choose but do that as he is asked to.
_____________________________________________________________
◆在had better, would rather, would rather...than, would sooner...than, might (just) as well，cannot but, cannot help but, cannot choose but, do nothing besides, do nothing but，do nothing than，why (not), prefer to do rather than do等结构后面的不定式符号to通常被省略。 4. 用括号中词的适当形式填空。
(1) I have no choice but_________ (stay) here.
(2) He could do nothing but _________ (wait) for the result. (3) He did nothing last Sunday but _________ (repair )his bike.
◆用作介词except, but宾语的不定式有时带to，有时不带to。其大致原则是：若其前出现了 动词 do，其后的不定式通常不带 to；若其前没有出现动词 do，则其后的不定式通常带to . 5. 用括号中词的适当形式填空。
(1) The only thing I can do was _________ (keep) silent.
(2) What he wants to do is_________ (complete) the whole task as soon as possible. (3) All I wanted was _________ (help) him.
如果主语是all或是what引导的从句，主语受first, only, one, least或形容词最高级修饰, 且后面的从句或短语中有实意动词do时，作表语的不定式前不用to。
6. let go(松开)，let drop (似不经意说出）make believe（假装），go hang等，不用to。 (1) He made believe he knew the answer. (2)He would not let go of the rope. (3)He let drop the secret. (4)They can't let things go hang.
7. 在hate, hope, like, love, prefer ,try, want, wish等动词之后的不定式作宾语时，用 to 代替与前面相同的动词。
(1) The boy wanted to ride his bicycle in the street, but his mother told him_________. A. not to B. not to do C. not do it D. do not to (2) — I’ll be away on a business trip. Would you mind looking after my cat? — Not at all. _________.
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A. I’ve no time B. I’d rather not C. I’d like it D. I’d be happy to (3) —Will you go to the theatre, Miss Brown? — Sorry, _________.
A. I want B. I don’t want to C. I’m glad to D. I’d like to
(4) — Alice, why didn’t you come yesterday? — I_________, but I had an unexpected visitor. A. had B. would C. was going to D did
8. 在助动词及情态动词be going，be able to, have, ought, used等后, to代表与前面相同 的动词。
朗读下列句子,注意不定式符号的使用.
(1) — I’m going to the south next week. What about you? — I’m going to. (2)—Do you want to have a rest? —Yes, I want to, but I can’t.
(3)—Did you get the new stamps? — No, I tried to, but there wasn’t any left in that post office. (4) I didn’t mean to call you at lat night, but I had to as I did have something important to tell you. (5) — You should have thanked her before you left.
— I meant ____, but when I was leaving I couldn’t find her anywhere. A. to do B. to C. doing D. doing so
9. 在be + ready/happy/glad/pleased/afraid等形容词后，用to代表与前面相同动词的不定式。 —Will you like to join me in a walk? —I’ll be glad to./ I’ll like to.
10. 两个不定式并列时，为了避免重复，后一个不定式的to一般省去，但两个不定式有对照 或对比之义时，则不可省去to.
(1) After work I taught my aunt to read and _______ (write).
(2)The purpose of the new technologies is to make life easier, _______ (make) it more difficult. 11. 在特定的上下文中,为了避免重复,如果不定式为一般式to be...或完成式to have done时,则不定式符号to和be或have常一并保留,be或have之后的部分通常要省略。 (1)－Aren’t you the headmaster? －No, and I don’t want to be. (2)－Hasn’t he finished writing the report? －No, but he ought to have. 五、不定式的否定形式
not/never/seldom/hardly + to + 动词原形 1.选择正确的答案。
(1)The purpose of new technologies is to make life easier, _______ it more difficult. A. not make B. not to make C. not making D. do not make (2) The patient was warned _______oily food after the operation.
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A. to eat not B. eating not C. not to eat D. not eating 2. 把下列句子翻译成英语或汉语。 (1)他告诉我不要吵闹.
_____________________________________________________________ (2)他警告我不要在河里游泳.
_____________________________________________________________ (3)老师建议我们不要玩电脑游戏.
_____________________________________________________________
(4)The teacher told us not to play in that river. _____________________________________________________________ (5) She checked the names so as not to make mistakes.
_____________________________________________________________ 六、不定式的逻辑语主语问题 1. 把下列句子翻译成英语。
(1) 对于我们来说学好英语是很重要的。
_____________________________________________________________ (2) 你来告诉我真的太好了
_____________________________________________________________ 2.用适当的介词填空。
(1) It is very important_______ us to learn English well. (2) It was wise_______ him to do that. (3) It’s very kind _______you to say so. (4) It’s necessary_______ us to help each other. (5)There is much work _______ me to finish
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