不一定,如果谓语动词本身就是did就不需要再接动词原形了。如:He did hs homework after school.此处did是实意动词,意思为“做”;若did为助动词时,在一般疑问句 否定句 或强调谓语动词时实意动词需要还原,如:Did he do his homework after school? He did not do his homework after school. He did do his homework after school.他的确在放学后写作业。
不一定,如果谓语动词本身就是did就不需要再接动词原形了。如:He did hs homework after school.在一般疑问句 否定句 或强调谓语动词时实意动词需要还原,如:Did he do his homework after school? He did not do his homework after school. He did do his homework after school.他的确在放学后写作业。