如题所述
He heard a Ioud noise.改为一般疑问句,是指借助助动词did
Did he hear a loud noise?
Did he hear a loud noise?
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第1个回答 2021-03-10
这句话是一般过去时,改为一般问句时要在句首加助动词Did ,谓语动词要恢复原形,其它不变。
Did he hear a loud noise ?
Did he hear a loud noise ?
第2个回答 2021-03-10
借助助动词 did ,原来的动词要还原
Did he hear a loud noise?
Did he hear a loud noise?