【正文】 wish（希望）舉例：The driver failed to see the other car in time.司機沒能及時看見另一輛車。（3） 當(dāng)不定式作主語的句子中又有一個不定式作表語時，不能用It is… to…的句型(對)To see is to believe.　眼見為實。It seemed selfish of him not to give them anything.　他不給他們?nèi)魏螙|西，這顯得太自私了。s very kind of him to help us.　他幫助我們，他真好。s necessary for you to lock the car when you do not use ，鎖車是有必要的。s so nice to hear your 。s easy (for me) to do easy,　difficult,　hard,　important,　possible,　impossible,　fortable,　necessary,　better。It is better to have loved and lost than never to have loved at ，比從未愛過要好。He will find it is hard to make 。這一句式有時相當(dāng)于Sb is+形容詞+to do句式 ，如：It39。④It seems(appears)+形容詞+to doIt seemed impossible to save money.在句型③中，常用表示客觀情況的形容詞，如：difficult,easy,hard,important,impossible,necessary 等；在句型④中，常用careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise等 表示贊揚或批評的詞。②It takes sb+some time+to doHow long did it take you to finish the work?你花了多少時間來完成這項工作？③It+be+形容詞+for sb+to doIt is difficult for us to finish writing the position in a quarter of an 。s our duty to take good care of the 。(2)用it作形式主語，把真正的主語不定式置于句后，常用于下列句式中。To lean out of the window is 。如：To get there by bike will take us half an 。如：①When we shall leave…③…h(huán)ow Icould learn……經(jīng)常在這種結(jié)構(gòu)中使用的動詞有：consider,decide,discover,explain,find out,forget,hear,know,lea rn,observe,understand,wonder等。如：①When to leave for London has not been decided yet. （不定式在句子中做主語）②Mr. Smith didn39。m sorry to have given you so much trouble.He seems to have caught a cold.3)進行式：表示動作正在進行，與謂語動詞表示的動作同時發(fā)生。2) 完成式：表示的動作發(fā)生在謂語動詞表示的動作之前。一般為：動詞+ to do sthHe seems to know this.I hope to see you again. = I hope that I39。s birthday party.（不定式作主語是被動語態(tài)to be invited是被邀請）It was impossible for lost time to be made up.（不定式作主語）I wish to be sent to work in the country.（不定式作賓語）Can you tell me which is the car to be repaired?（不定式作定語）He went to the hospital to be examined.（不定式作狀語）My work is to clean the room every day.（不定式作表語）在There be結(jié)構(gòu)中，修飾主語的不定式可用被動，也可用主動。如：It39。定義（語態(tài)）動詞和參與此動作的主語之間關(guān)系的一個術(shù)語。當(dāng)主語是動作的發(fā)起者（或之一）時，稱為主動語態(tài)；如果動詞不定式的邏輯主語是這個不定式所表示的動作的承受者，不定式一般要用被動語態(tài)形式。s a great honour to be invited to Mary39。如：There are still many things to take care of (to be taken care of).但有時兩種形式表達的意思不同，如：There is nothing to do now.( We have nothing to do now.) There is nothing to be done now.(We can do nothing now.)形式1) 現(xiàn)在式：一般現(xiàn)在時表示的動詞，有時與謂語動詞表示的動作同時發(fā)生，有時發(fā)生在謂語動詞的動作之后。ll see you again.　我希望再見到你。I39。He seems to be eating something.4)完成進行式：She is known to have been wreaking on the problem for many years.一般在表示情緒的動詞后加to do也表將來疑問詞疑問詞who,what,which,when,where,whether,how后可接不定式構(gòu)成不定式短語，在句中作主語、賓語、表 語等。t know whether to leave or stay there. （不定式在句子中做賓語）③I asked Professor Xu how to learn English well. （不定式在句子中做直接賓語）④The question was where to get the medicine needed. （不定式在句子中表語）以上例句中疑問詞+不定式部分，均可轉(zhuǎn)換為相應(yīng)的從句形式。作主語動詞不定式作主語時，句子的謂語動詞常用單數(shù)，其位置有以下兩種：(1)把不定式置于句首。To make up for lost time is not 。To save money now seems 。如：①It+be+名詞+to doIt39。It is an offence to drop litter in the 。It is stupid of you to write down everything (that) the teacher 。在不定式前的sb，可看作其邏輯主語。s kind of you to help me with my English.=You are kind to help me with my English.⑤It + 不定式結(jié)構(gòu)可位于believe/consider/discover/expect/find/think和wonder之后He thought it would be safer to go by 。⑥不定式的完成式也可作句子的主語To have made the same mistake twice was 。(3)舉例（1） It39。the first,　the next,　the last,　the best,　too much,　too little,　not enoughIt39。It39。（2） It39。Kind,　nice,　stupid,　rude,　clever,　foolish,　thoughtful,　thoughtless,　brave,　considerate(考慮周到的),　silly,　selfish(自私的)例句:It was silly of us to believe him.　我們真愚蠢，竟然相信了他。注意：（1） 其他系動詞如，look，appear等也可用于此句型（2） 不定式作為句子成分時，動詞用單數(shù)形式。(錯)It is to believe to see.作賓語1) 以下動詞后，只能跟不定式作賓語affordI happen to know the answer to your question.我碰巧知道你那道問題的答案。不定式decide,know,consider forget,learn,remember,show,understand,see,wonder,hear,find out,explain,tellPlease show us how to do that. 請演示給我們?nèi)绾稳プ?。t make up my mind which to ，我都拿不定主意買哪一種。The quest