come across偶然发现, 偶然遇见
例句:I came across him in the street yesterday.
昨天我在街上无意中碰到了他。
4.but he said that at 91, Mr Mandela was unlikely to sit through the whole match.
sit through一直挺到结束,耐着性子看完(或听完)
例句:Are you able to sit through the play?
你能耐着性子看完戏吗?
I can't sit through six hours of Wagner!
看六小时的瓦格纳歌剧我可坐不住。
1.The authorities in the West African state of Gambia have seized cocaine which could have been sold for more than a billion dollars in Europe.
could have虚拟语气
could (不能用 can) have done 表示“过去本能够做某事却未做。”注意:其否定形式 couldn't have done 没有虚拟语气的用法,couldn't have done 只能表推测,相当于 can't have done,意为:“过去不可能做了某事。”
此外,could have还可以表示对过去发生的事情的推测。
can/could have done 表推测一般用在否定句和疑问句中,表示不相信或怀疑的态度。
Can/Could he have passed the exam?他可能通过了考试吗?
I think that he couldn’t/can't have gone abroad. I saw him just now.我认为他不可能出国了。我刚才还看见他了。
2.The law was passed last year with strong backing from the Prime Minister Donald Tusk after the case of a man in his 40s convicted of repeatedly raping his daughter and fathering two children by her.