1·Your trip must have been fun!
你这次旅行一定很开心吧！
—— 《牛津词典》
2·The street must have been on a slope.
那条街一定是一直在一个斜坡上。
—— 《柯林斯英汉双解大词典》
3·I must have been a horrid little girl.
我以前一定是个招人讨厌的小女孩。
—— 《柯林斯英汉双解大词典》
4·He must have been a stranger to the town.
他当时一定是刚到这个镇子。
—— 《牛津词典》
5·His sudden reappearance must have been a shock.
他的突然再次露面一定引起了震动。
—— 《柯林斯英汉双解大词典》
6·The killer must have been heavily bloodstained.
杀手身上一定沾满血污。
—— 《柯林斯英汉双解大词典》
7·We must have been burgled while we were asleep.
我们睡着时一定让贼入室偷了。
—— 《牛津词典》
8·I must have been blind not to realize the danger we were in.
当时我一定是眼瞎了，竟然没有意识到我们所处的危险。
—— 《牛津词典》
9·Judging by the company he kept, Mark must have been a wealthy man.
根据马克所交往的人来判断，他一定是位富翁。
—— 《牛津词典》
10·He must have been the most popular guy at the most popular fraternity in college.
他一定曾是大学里最受欢迎的男生联谊会中最红的人。
—— 《柯林斯英汉双解大词典》
1·How very, very lonely he must have been!
他一定非常非常孤独！
2·They must have been working for a long time.
他们一定工作了好长时间。
3·It has sometimes been argued that she, too, must have been a descendant of King David.
有时候会争论她一定也是一位大卫王的子孙。