问题标题:
【_____himafewwordsofItalian?Thewaiter.(a)Whotaught(b)Whodidteach(c)Whodidheteach(d)Whomdidheteach.为什么是a.特别是为什么b不可以.】
问题描述:

_____himafewwordsofItalian?Thewaiter.(a)Whotaught(b)Whodidteach(c)Whodidheteach(d)Whomdidheteach.为什么是a.特别是为什么b不可以.

陈玉东回答:
  对主语提问不把助动词do(does,did)等提前,主语直接变为疑问词.如:(I)playbasketballverywell.——Whoplaybasketballverywell.试比较:Ilike(her)verymuch.——WhodoIlikeverymuch.(I)like...
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