We are looking for the key to unlock the door. [ ] A．by whichB．with which C．on w
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We are looking for the key ________ to unlock the door.
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A．by whichB．with whichC．on whichD．in which
试题答案
答案：B
提示：“疑问词＋不定式”除保持原有的动词性质外，又增添了名词的性质.因此，可以像名词一样在句中作动词的宾语，作介词的宾语，作主语、表语、宾补、伺位语及后置定语等.必要时，疑问词前也可加上介词.使用某种工具要用with，with which作其后不定式的状语，句中with which to unlock the door作后置定语修饰key.这句意思是“我们正在找开门的钥匙.” |