When I mentioned this change to one of his teachers, she joked that the coat must have changed him.

当我向他的一位老师提到他的变化时，她开玩笑说，一定是这件外套改变了他。

youdao

I must have been changed for Mabel!

我一定是变成了梅布尔的！

youdao

I think everyone's lives in that town must have changed that day; about 160 of them ended.

我想这个城市里每个人的生活从那一天起就被改变了，在这场飓风中有160人丧生。

youdao

My tally of four tries is pretty close to the number of nappies I have changed this season, I must admit.

BBC: Andrew Henderson column