因?yàn)闆](méi)有明顯的過(guò)去,所以句子時(shí)態(tài)要前后保持一致.這里說(shuō)的就是一個(gè)現(xiàn)在的現(xiàn)象..所以不需要用過(guò)去式..假如只有后半句，能不能用過(guò)去式?jīng)]有其他情景設(shè)置，是可以用過(guò)去式說(shuō)這句話的。
望采納哦
She doesn't work hard at English,so she fails in the exam.為什么用fails不用failed?
She doesn't work hard at English,so she fails in the exam.為什么用fails不用failed?
英語(yǔ)人氣：407 ℃時(shí)間：2019-10-23 11:21:06
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