“特殊疑問詞＋動詞不定式”的用法歸納 一、疑問代詞who,what,which等和疑問副詞when,where,how等后面跟不定式,構(gòu)成不定式短語.這種結(jié)構(gòu)在句中可作主語、賓語、表語、賓語補(bǔ)足語等句子成分.如：1.Where to go is still a question.到哪里去還是個問題.（作主語） 2.I know where to find the boy.我知道到哪里能找到這個男孩.（作動詞know的賓語） 3.We must first solve the problem of whom to serve.我們必須首先解決為誰服務(wù)的問題.（作介詞of的賓語） 4.The question is how to learn English well.問題是怎樣學(xué)好英語.（作表語） 5.I asked her how to learn English.我問她如何學(xué)英語.（用賓語） 二、“特殊疑問詞＋動詞不定式”結(jié)構(gòu)經(jīng)常用在某些動詞后作賓語,類似的動詞有：tell,show,know,learn,teach,find out,forget,wonder,remember等.如：I’ll show you how to do it.我要讓你看看如何做這件事.You’d better find out where to put it.你最好弄清楚要把它放在哪里.三、“特殊疑問詞＋動詞不定式”這種結(jié)構(gòu)可以把復(fù)合句轉(zhuǎn)為簡單句.如：I don’t know what I’ll do next.= I don’t know what to do next.The doctor told him when he should take the medicine.=The doctor told him when to take the medicine.同樣,因為“特殊疑問詞＋動詞不定式”這種結(jié)構(gòu)相當(dāng)于一個名詞性從句,所以可用同等成分的從句代替,從而把簡單句轉(zhuǎn)換為復(fù)合句.改寫時只需在疑問詞后加上適當(dāng)?shù)闹髡Z,并把不定式改為適當(dāng)?shù)男问降闹^語即可.如：Li Ping doesn’t know why to learn English.= Li Ping doesn’t know why he should learn English.Which to choose is important.= Which we should choose is important.The question is where to go.= The question is where we should go.四、“特殊疑問詞＋動詞不定式”這種結(jié)構(gòu)可構(gòu)成獨立問句.如：What to do?怎么辦?How to get rid of the trouble?如何擺脫困境?以上內(nèi)容為中小學(xué)英語站( www.zxxyyz.com )收集整理