"What did she say?"分析"What did she say?"这句话中的do用了过去式,为什么say不需要用?

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"What did she say?"分析"What did she say?"这句话中的do用了过去式,为什么say不需要用?
"What did she say?"分析
"What did she say?"这句话中的do用了过去式,为什么say不需要用?

"What did she say?"分析"What did she say?"这句话中的do用了过去式,为什么say不需要用?
助动词do变为了过去式,而后面的行为动词就要用回原型,应熟记

did 用了,后面就不要用了。
例如
did you have lunch?

这是一个句子的,有一个用过去另一个自然不用啦

因为是第一个动词才用,过去时中