Zoom did his homework yesterday 改为一般疑问句(讲解)

问题描述:

Zoom did his homework yesterday 改为一般疑问句(讲解)

did Zoom do his homework yesterday
肯定句中did是do的过去式,是实意动词,不是助动词。

谓语为行为动词过去式时,构成一般疑问句必须借助于助动词did, 所以:Did Zoom do his homework yesterday?

Did Zoom do his homework yesterday?(实义动词DID 作谓语,一般过去时,变一般疑问句时在句首加助动词DID,原来的动词DID 要变回原形do)

Did Zoom do his homework yesterday?