疑问代词，可做do的宾语，所以what to do 后不要加it。 ? ［误］ I am very glad meeting you. ? ［正］ I am very glad to meet you.
? ［析］ 许多形容词后加不定式，这样用时形容词多是用来描述人物的感情、态度，如：glad, happy, pleased, lucky, sorry, sad, upset, ready, careful, surprised。 ? ［误］ I'm too glad for seeing you. ? ［正］ I'm too glad to see you.
? ［析］ 这句话不能按照too…to的句型翻译为：我太高兴了以至于不想见你。而应译为：见到你太高兴了。又如：She is too honest to tell the truth? 应译为：她很诚实，不会不讲实话。 ? ［误］ Tom is too young not to join the army. ? ［正］ Tom is too young to join the army.
? ［析］ 这是too…to的正常用法，太如何如何以至于不能如何。
? ［误］ I went to the hospital for seeing my old friend. He was ill in hospital. ? ［正］ I went to the hospital to see my old friend. He was ill in hospital. ? ［析］ 在句中表示某动作的目的时，要用不定式而不能用for加动名词。 ? ［误］ Could you help me to find a chair to sit. ? ［正］ Could you help me to find a chair to sit on.
? ［析］ 当不定式作后置定语时，将不定式放于名词之后。如果不定式中的动词是不及物动词，则其后面的介词不要省略。如：I sat on the chair. 这样的用法还有：I want to find a room to live in. I want to find a pen to write with.
? ［误］ When mother was about leaving the baby cried suddenly. ? ［正］ When mother was about to leave the baby cried suddenly.
? ［析］ be about to 是表达较近的即将发生的动作，可用来表示将来时，或按计划、安排的事。 ? ［误］ This work is difficult to be done. ? ［正］ This work is difficult to do.
? ［析］ 在不定式作宾语时，下列情况常用主动语态表示被动。① 句子的主语即是不定式动作的执行者，如：I have a lot of letters to write. ② 句中的宾语是不定式中动作的执行者，如：Could you find me a job to do? ③ 在形容词之后的不定式，如：English is difficult to learn. ? ［误］ Would you like to see a film with us?? Yes, I'd love. ? ［正］ Would you like to see a film with us?? Yes, I'd love to.
? ［析］ 在口语简答语中要将不定式符号保留，如：? I had to (不得不作) I'm going to (打算作)
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I used to (过去习惯作)? I'd love to (喜欢作) I hope to (希望作某事) I'll be glad to (高兴作) ? ［误］ Did you see someone to do this work for me? ? ［正］ Did you see someone do this work for me?
? ［析］ 在感观动词之后常接不带to的不定式。这些词是see, look at, watch, hear, listen to, feel, notice。
? ［误］ He was seen prepare this car. ? ［正］ He was seen to prepare this car.
? ［析］ 在被动语态中要将主动语态句中省去的不定式还原回来。 ? ［误］ Please? Let my child to try it again. ? ［正］ Please? Let my child try it again.
? ［析］ 在make, have, let后加不带to的不定式作宾语补足语。 ? ［误］ Why not to do it again? ? ［正］ Why not do it again?
? ［析］ Why not, you'd better 后接不带to的不定式，如：You'd better go.但要注意的是它的否定式是You'd better not go.
? ［误］ When he heard the news he couldn't help to cry. ? ［正］ When he heard the news he couldn't help crying. ? ［析］ can't help+现在分词表示情不自禁作某事。
? ［误］ In autumn, the street is always covered with falling leaves. ? ［正］ In autumn, the street is always covered with fallen leaves.
? ［析］ 现在分词作定语有正在的含义，如：falling leave 正下落的叶子。而过去分词作定语fallen leaves是落地的叶子。过去分词含有已经完成的意思。 ? ［误］ Do you hear someone sing in the office? ? ［正］ Do you hear someone singing in the office?
? ［析］ 感观动词可用不带to的不定式来作宾语补足语，表达一个动作的全过程或已结束的动作，而用现在分词表示一个正在进行中的动作。
? ［误］ I want to shop some food for supper. ? ［正］ I want to buy some food for supper. ? ［正］ I want to go shopping.
? ［析］ shop作买东西讲时，要用go shopping,其后不要加所购买的东西。这样的用法还有：? go boating 划船 go sailing 航海 go skating 滑冰?go shooting 射击 go dancing 去跳舞 go fishing 钓鱼?
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go swimming 去游泳…… 不要用错，也不要改为其他式，因为这是习惯用法。
? ［误］ When the teacher came into the classroom, the students stopped to talk. ? ［正］ When the teacher came into the classroom. the students stopped talking. ? ［析］ stop to do something 是停下来去做某事，而stop doing something 则是停止做某事。 ? ［误］ I didn't remember closing the door, so the thief came into the room directly. ? ［正］ I didn't remember to close the door, so the thief came into the room directly. ? ［析］ remember后接不定式是记着去做某事，即该动作并没有完成。而remember 后接动名词则表明该动作已经作完了。如： Do remember to turn off the light, before you leave. 即在你离开前记着去关灯。而关灯的动作并没有做。I remember meeting you somewhere. 我记得在某处见过你。而相见一事已经作完了。相同用法还有forget。
? ［误］ When I finished to do this work I would go to play football. ? ［正］ When I finished doing this work I would go to play football.
? ［析］ 在英语中有些动词后要接动名词作宾语。在初中范围主要有两个动词finish和enjoy, 千万不要与like相比。因为like作动词\喜欢\用时，其后接动名词表示习惯性动作，接不定式表示一次性特殊的动作，而would you like后面则一定要用不定式。
? ［误］ When he finished his homework, he went on playing the football. ? ［正］ When he finished his homework, he went on to play football.
? ［析］ go on to do something 是做完一件事紧跟着做另一件事。而go on doing something 是在做一件事的过程中被打断后接着再继续做这件事。 ? ［误］ He's busy to prepare his lessons. ? ［正］ He's busy preparing his lessons. ? ［析］ be busy 后加doing 而不能接不定式。 ? (三) 例题解析
?1? Mr Zhang asked me ＿＿＿ the words again. ?A. read B. reads C. to read D. reading ? ［答案］ C.
? ［析］ ask somebody to do something 要求某人作某事。 ?2? You ＿＿＿ play on the road. It's dangerous.
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?A. mustn't B. may C. can D. must ? ［答案］ A.
? ［析］ must 用于否定句表示禁止做某事。 ?3? Mr Brown ＿＿＿ in Beijing since 1993. ?A. work B. works C. worked D. has worked ? ［答案］ D.
? ［析］ 句中有since引导的时间状语，因此句中要用完成时态。 ?4? I ＿＿＿ a letter when my mother came in. ?A. write B. am writing C. was writing D. will write ? ［答案］ C.
? ［析］ 当母亲进来时是一个瞬时的动作，而写信是一个长动作，所以写信这个动作应用过去进行时态，表示在写信过程中发生的另一个短动作。
?5? It's not an important party, you needn't ＿＿＿ . ?A. pay for it B. wear it out C. try it out D. dress up for it
? ［答案］ D.? ［析］ pay for-为某物，某人付款，wear out-穿坏，磨破，tryout-选拔，挑选，而dress up-梳妆打扮。
?6? Can I ＿＿＿ a bike from him? ?A. lend B. return
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C. give D. borrow ? ［答案］ D.
? ［析］ borrow something from…为向某人某处借某物。而lend, return, give后面的介词应用to。 ?7? - Must I stay at home? ?- No, you ＿＿＿ . ?A. mustn't B. needn't C. may not D. can not ? ［答案］ B.
? ［析］ needn't 为\没有必要必须做某事\，而mustn't为\禁止做\，can not为\不能做\。根据题意是：你不一定待在家里。
?8? - How long have you ＿＿＿ here? ?- About two months. ?A. been B. gone C. come D. arrived ? ［答案］ A.
? ［析］ have been here是个状态，可以与后面的长时间状语连接，而其他三个动词都是瞬间动词。 ?9? Stamps ＿＿＿ by people for sending letters. ?A. use B. using C. used D. are used ? ［答案］ D.
? ［析］ 这里是被动语态，意为邮票被人们用来发信。 ?10? The radio says Tianjin will be ＿＿＿ tomorrow. ?A. rains B. rain
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