who提问的特殊疑问句时态

who引出的疑问句
例,特殊疑问句一般是,疑问词+疑问语序
为何Who broke the window?没有IS,ARE~Which does he want?又有does呢?为何不是Who did break the window?

Who broke the window?句中的主语是who,谓语是broke(break的一般过去时),宾语是the window.
而Which does he want?句中的主语在后面,即he,谓语是want,宾语是which,但由于是一般过去是,所以要用did这个助动词在前面.
记住:打夯疑问词本身又在特殊疑问句中做主语时,疑问句的语序保持陈述句语序不变.但如果不是做主语,就必须用疑问语序.
又如: What is the time? (几点钟了?)
Where can I find you? (我能在哪里找到你?)
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