The playground is wet this morning.It must rain last night.isn't it?為什么

英語人氣：975 ℃時(shí)間：2020-03-25 21:33:47

優(yōu)質(zhì)解答

It must rain last night.isn't it?這整個(gè)句子都是錯(cuò)的.用isn't it來反問,更是錯(cuò)的.
(The playground is wet this morning)早上操場還是濕的,由此推測昨晚肯定下雨了.
對過去情況肯定的推測,應(yīng)用must have done sth.,其反意問句是用didn't 來反問.
因此It must rain last night.isn't it?應(yīng)改為:
It must have rained last night,didn't it?
昨晚肯定下雨了,對嗎?