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一般用it當形式主語,把作主語的不定式短語后置。To do two things at a time is to do neither.次做兩件事等于未做。(2)如果主語是不定式(表示條件),表語也是不定式(表示結果)。 To work means to earn a living.工作就是為了生活。His wish is to buy a luxurious car in the near future.他的希望是在不遠的將來買一輛豪華轎車。Our work is serving the people.我們的工作是為人民服務。注:動名詞作表語時與進行時態(tài)中的現(xiàn)在分詞形式相同,但其所屬結構迥異,進行時態(tài)說明動作是由主語完成的。People cannot but feel puzzled,for they simply cannot understand how he could have made such a stupid mistake.His victory in the final was no more convincing than I had expected.(3)分詞作表語分詞做表語有兩種情況,一種是現(xiàn)在分詞做表語,一種是過去分詞做表語,這兩者區(qū)別是考試中經(jīng)??嫉降牡胤?。所以,凡表示“令人……的”都是ing形式,凡是表示“感到……”都用ed形式。The pupils will get confused if they are made to learn too much.如果要學生學得太多,他們會感到糊涂的。They were very excited at the news.聽到這個消息,他們非常激動。t help不禁 delay延遲 escape逃跑,逃避can39。4)有些動詞后使用動名詞和動詞不定式作賓語的差別1)forget to do 忘記要去做某事(此事未做)forget doing忘記做過某事(此事已做過或已發(fā)生)2)stop to do 停止、中斷(某件事),目的是去做另一件事stop doing 停止正在或經(jīng)常做的事3)remember to do 記住去做某事(未做)remember doing記得做過某事(已做)4) regret to do對要做的事遺憾regret doing對做過的事遺憾、后悔5)try to do努力、企圖做某事try doing試驗、試一試某種辦法6) mean to do打算,有意要…mean doing意味著7)go on to do 繼而(去做另外一件事情)go on doing 繼續(xù)(原先沒有做完的事情)8)propose to do 打算(要做某事)proposing doing建議(做某事)9) like /love/hate/ prefer +to do 表示具體行為;+doing sth 表示抽象、傾向概念(注)如果這些動詞前有should一詞,其后賓語只跟不定式,不能跟動名詞。t you remember seeing the man before? 你不記得以前見過那個人嗎?You must remember to leave tomorrow.你可要記著是明天動身。t regret telling her what I thought.我不后悔給她講過我的想法。You must try to be more careful.你可要多加小心。s try doing the work some other way.讓我們試一試用另外一種辦法來做這工作。t mean to hurt your feeling.我沒想要傷害你的感情。4.不定式、現(xiàn)在分詞和過去分詞作定語的區(qū)別(1)不定式作定語1)不定式與其所修飾的名詞可能是主謂關系He was the last one to leave school yesterday.昨天他是最后一個離開教室的。2)不定式與其所修飾的名詞可能是動賓關系Get him something to eat.給他拿點兒東西吃。3)不及物動詞構成的不定式做定語,要加上適當?shù)慕樵~和被修飾的名詞形成邏輯上的動賓關系,這里的介詞不能省去。There is nothing to worry about.沒有什么值得發(fā)愁的。6)不定代詞something, nothing, little, much, a lot 等習慣上用不定式做定語。7)如果其動詞要求用不定式做賓語,或者其形容詞要求接不定式做補語,則相應的名詞一般用不定式做定語。Their decision to give up the experiment surprised us。He is always the first to e and the last to leave.他總是第一個到來,最后一個離去。2)現(xiàn)在分詞表示正在進行,過去分詞表示狀態(tài)或做完(完成)的事。The child standing over there is my brother.站在那兒的男孩子是我弟弟。Have you got your watch repaired? 你拿到那個修好的表了嗎?He is an advanced teacher.他是個先進教師。例如:Do you wa