34.It was raining hard,they has to stay at home.34.It was raining hard,they_____ stay at home.A.must B.would C.had to D.could前面是they为什么用has to 而不用must?

34.It was raining hard,they has to stay at home.34.It was raining hard,they_____ stay at home.A.must B.would C.had to D.could前面是they为什么用has to 而不用must?
34.It was raining hard,they has to stay at home.
34.It was raining hard,they_____ stay at home.
A.must B.would C.had to D.could
前面是they为什么用has to 而不用must?

34.It was raining hard,they has to stay at home.34.It was raining hard,they_____ stay at home.A.must B.would C.had to D.could前面是they为什么用has to 而不用must?
不是has to是had to
had是have的过去式,have to在这里的意思是"他们不得不呆在家里"
或者"只能"
must是必须的意思..这里没有表示这个语气

是因为外面的雨下得很大，他们不得不呆在家里在。has to 是不得不的意思。

has to 表被动