考博英语语法学习备考:疑问词+不定式结构

2014-01-13 15:03:54来源:网络

考博英语语法学习备考:疑问词+不定式结构

  疑问词who,what,which,when,where和how后加不定式可构成一种特殊的不定式短语。它在句中可以用作主语、宾语、表语和双重宾语。如:

  When to start has not been decided.何时动身尚未决定。(主语).

  I don't know what to do.我不知道该怎么办。(宾语).

  The difficulty was how to cross the river.困难在于如何过河。(表语).

  I can tell you where to get this book.我可以告诉你哪里可以买到此书。(双重宾语).

  (注)A.有时疑问词前可用介词,如:

  I have no idea of how to do it.我不知道如何做此事。

  B.动词know 后面不能直接跟不定式作宾语,只能跟疑问词(如:how, what)+不定式:

  While still a young boy, Tom knew to play the piano well and as he grew older, he wrote operas, the most famous of which is Carmen.

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本文关键字: 考博 英语 语法学

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