The reason why they had to leave wasn't explained to us.為什么用 had to 而不用must
The reason why they had to leave wasn't explained to us.為什么用 had to 而不用must
英語(yǔ)人氣：201 ℃時(shí)間：2020-02-10 03:15:14
優(yōu)質(zhì)解答
had to - - - -指的是已經(jīng)“過去”的事情,must通常是指“將來(lái)”的事情.你的句子里 wasn't 是“過去”的事情呀.這說(shuō)明他們已經(jīng)離開了.就必須用had to
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