2. 外语
  3. She didn’t know ______ to express her ideas clearly when she was invited to speak at a meeting.

She didn’t know ______ to express her ideas clearly when she was invited to speak at a meeting.

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问题 She didn’t know ______ to express her ideas clearly when she was invited to speak at a meeting.
选项 A、where
B、why
C、what
D、how
答案D
解析 本题考查不定式用法。本题考查学生疑问词+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、表语和双宾语。例如：1．作主语：When to start has not been decided．(何时动身尚未决定。)  2．作宾语：I don’t know what to do．(我不知道该怎么办。)  3．作表语：The difficulty was how to cross the river．(困难在于如何过河。)  4．作双宾语：I can tell you where to get this book．(我可以告诉你哪里可以买到此书。)本题考查该结构作宾语的情况。
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