1、Book 7 Unit 1 Living wellPeriod Four Grammar(I)导学目标 不定式to do句法功能 自主合作探究I. 不定式作主语1) To lean out of the window is dangerous. 把头伸出窗外是危险的。2) It is not good for you to smoke so much. 你抽这么多烟对身体很不好。归纳拓展：1. 表示具体动作、将来的动作或者表示一件未完成的事。2. 不定式作主语，其位置有两种情况：1) 不定式放在句首。2) 使用形式主语it，然后把真正的主语放在后面, 常见it作形式主语的句型：It+be+名词
2、+to do sth常见名词有：duty, pleasure, mistake, turn, good(bad) manners . 如：Its our duty to obey the laws.It+be+形容词+for sb. to do sth. 常见形容词有：convenient, dangerous, easy, hard, useful, important, necessary, possible, unusual, interesting等。如：Its not very useful to read the whole book.It+be+形容词+of sb. to do
3、sth. 常见形容词有careless, clever, foolish, honest, kind, lazy, silly, stupid, wise, generous等。如：It is very clever of you to find him here.(=You are clever to find him here.)即景活用：句型转换1) To complete the 30storied building in one year was quite a difficult task._.II. 不定式作宾语1) She pretended not to see me whe
4、n I passed by. 2) I cant afford to buy a car. 3) I want to know what to do next.归纳拓展：1. 不定式作宾语的动词有：afford, agree, arrange, aim, attempt, choose, decide, desire, demand, determine, expect, fail, hope, wish, long(渴望), want, offer, promise, pretend, plan, refuse, manage等。1) Ive arranged to meet him at
5、ten oclock. 2) I didnt expect to find you here.2. 在动词teach, decide, wonder, show, learn, forget, ask, find out, advise, discuss等常跟“疑问词+to do不定式”。 3) I havent decided whether to sell it or not. 4)I dont know what to do / where to go /who(m) to ask/when to stop / how to get there.即景活用：完成句子1) She prete
6、nded _(没看到我)when I passed by.2) What a poor memory! I forgot_ money from him yesterday. But today I forgot _the money to him. 多么差的记忆力！昨天我忘了向他借过钱，但今天我又忘了把钱还给他。III. 不定式作宾语补足语vt+O+to do1) The doctor warned him not to eat too much meat. 2) I didnt expect you to arrive so early. 归纳拓展：不定式作宾补的动词有：advise, a
7、llow, ask, beg, cause, drive, encourage, expect, forbid, force, get, intend, invite, would like/love, order, permit, persuade, prefer, tell, want , warn, wish 等。Eg. We dont allow people to smoke in the lecture hall.即景活用：单句语法填空He begged me _(not tell)his father about it.IV. 不定式作表语1) The problem is to
8、 find a solution. 2) What I would suggest is to start work now. 归纳拓展：主语是以aim, duty, hope, idea, intention, mistake, plan, proposal, job, suggestion 等为中心词的名词词组，或以what引导的名词性从句表示，后面的不定式说明其内容，如：1) My idea is to climb the mountain from the north.2) What I would suggest is to start work at once即景活用：1) _.
9、眼见为实。2) My suggestion is _(立刻开始工作).V. 不定式作状语1) They got to the cinema, only to find all the tickets had been sold out. 他们到达电影院，却发现所有的票都卖完了。2) To do a good job, we must have the right tools.要干好活，我们必须有好工具。3) I am more than happy to receive your letter. 收到你的来信我非常高兴归纳拓展：1. 作目的状语：to, in order to, so as t
10、o；in order to可在句首或句中；so as to只放在句中。2.作结果状语：不定式作结果状语常用于下列结构中，如soas to, enough to; tooto; only to,等。only to,表示意想不到的或不合常理的结果，常与only连用。3. 作原因状语: 常放在形容词后 即景活用：1) _, one must first of all believe in himself. 要想成功，首先必须相信自己。2) We hurried to the station, only _that the train had left.我们急匆匆赶到车站，结果被告知火车已开走了。达标
11、检测 单句语法填空1. He told us whether _(have) a picnic was still under discussion 2. However bright a talker you are, there are times when its better _(remain) silent. 3. Passengers are permitted _(carry) only one piece of hand luggage onto the plane. 4. Rather than _on a crowded bus, he always prefers_ a bicycle.(ride)5. His ambition is _(go)to Harvard University. 6. The patient was warned _(not eat) oily food after the operation. 7. Though he had often made his little sister_, today he was made _by his little sister. (cry)8.We were astonished _(find) the temple still in its original condition.
