2011年成人英語三級語法:疑問詞+不定式動詞
來源:育路教育網(wǎng)發(fā)布時間:2011-09-06
英語有個很有用的結(jié)構(gòu),就是:疑問詞+不定式動詞(question word + to-infinitive)。 <script language="javascript" src="../../lesson.asp?top=701&up=1169" type="text/javascript"></script> <script language="javascript" src="../../js/701-1169.js" type="text/javascript"></script>
疑問詞是疑問代詞“who, whom, what, which, whose”和疑問副詞“when, where, how, why ”。此外,連接詞“whether”也適用。
“疑問詞+不定式動詞”結(jié)構(gòu)有何功用呢?其主要功用有下列五種:
�、女�(dāng)主語,如:
● When to hold the meeting has not yet been decided.
● Where to live is a problem.
● How to cope with the rising cost of living becomes a daily discussion topic.
�、飘�(dāng)賓語,如:
● We must know what to say at a meeting.
● He could not tell whom to trust.
● Do you know how to play bridge?
⑶當(dāng)補(bǔ)足語,如:
● The problem is where to find the financial aid.
● The question is who to elect.
⑷當(dāng)名詞同位語,如:
● Tom had no idea which book to read first.
● Do you have a rough impression how to do it?
�、僧�(dāng)賓語補(bǔ)足語,如:
● Jim is not sure whose to choose.
● Mary and John are not certain whether to get married or not.
適用于“疑問詞+不定式動詞”的動詞包括:“know, see, decide, tell, ask, consider, discover, explain, forget, guess, hear, imagine, inquire, learn, remember, think, wonder, understand”等。
有點(diǎn)值得特別注意的是:當(dāng)這結(jié)構(gòu)當(dāng)賓語時,它的作用等于名詞分句,例如:
● I could not decide which dictonary to buy. / I could not decide which dictionary I should buy.
● Jack did not know where to find such a good teacher./ Jack did not know where he could find such a good teacher.
有些動詞,如“ask, show, tell, advise, inform, teach”等,可以先有個賓語,然后才接著加上適當(dāng)?shù)?ldquo;疑問詞+不定式動詞” 結(jié)構(gòu)。例如:
● The chief technician showed the apprentice how to repair the machine.
● Have you told him where to get the application form?
綜上所述,可見“疑問詞+不定式動詞”結(jié)構(gòu)是個形象清新,既容易用又不容易出錯的特別結(jié)構(gòu),可以多多運(yùn)用。
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