过去时态，已有动词，后面再出现动词用原形？

Question

如题所述

Answer 1

与助动词或情态动词do, does, did, shall, will, should, would, may, might, have to, must, need, ought to等一起构成谓语的动词时，要用原形。
当句子中有明显的过去时间状语,可根据上下文
注意：实义动词作谓语时一般疑问句要加助动词DID,否定句加DIDN’T ,加了助动词之后原来的动词要用原形.如
He went shopping yesterday .->
Did he go shopping yesterday?
He didn't go shopping yesterday.
He is a student .
He was a student ten years ago .