Question

She didn’t know__________to express her ideas in English clearly in public．

A.which
B.why
C.how
D.what

Answer 1

【答案】：C

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、表语和双宾语等。(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 cfoss the river．(困难在于如何过河。)(4)作双宾语：I Call tell you where to get this cake(我可以告诉你哪儿可以买到这种蛋糕。)本题考查该结构作宾语的情况。