did的用法 疑问句

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did的用法 疑问句
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did的用法 疑问句
did的用法 疑问句

did的用法 疑问句
what when how who where ...开头的特殊疑问句,在提问的时候,
一般来说,一般现在时,一般过去时句子的行为动词要使用助动词do(does,did)
例:What subjects does he study in the university?
When did you go to school yesterday?
但是,在正在进行时,一般将来时,就不用 do(does,did),因为要用助动词:be/shall/will
例:What are you reading now?
When will you go to see a film?
或者,是动词BE句子不用do(does,did)
例:Who is your English teacher?