He didn't do his homework yesterday 为什么do是原型.不是疑问句吖——.——、各位专家讲得好好哦——————————————————————~可惜就是没听懂、能通俗点么。都差不多偶该选
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He didn't do his homework yesterday 为什么do是原型.不是疑问句吖——.——、各位专家讲得好好哦——————————————————————~可惜就是没听懂、能通俗点么。都差不多偶该选
He didn't do his homework yesterday 为什么do是原型.不是疑问句吖——.
——、各位专家讲得好好哦——————————————————————~可惜就是没听懂、能通俗点么。都差不多偶该选哪个最佳——?
He didn't do his homework yesterday 为什么do是原型.不是疑问句吖——.——、各位专家讲得好好哦——————————————————————~可惜就是没听懂、能通俗点么。都差不多偶该选
didn't 的原形是do not , do为助动词,助动词后面都是跟动词原形.
do homework是做作业的意思.
He didn't do his homework yesterday.
他昨天没有做作业.
那把didn't 拆了吧
He did not do his homework yesterday.
do的过去式是did,因为do作为助动词时,后面加动词原形,所以跟在did后面的动词也是用原形.
因为do在这里不是动词= =而且有助动词咯- - 这是陈述句哟~~~ 咳咳咳那位啊- -不要误导她!!!!!那个do不是助动词!!!!did才是助动词==
此句是一般过去时,didn't 是助动词,do 是实意动词写或做的意思
若词句写成一般现在时是He dosen't do his homework
如He didn't eat that apple yesterday 。词句中的eat是实意动词,而表过去式,就需要把助动词dosen't变成didn't,就可以了
did是助动词 后面加原型
后面的do是实意动词