be sure例句

　　1、He might get there in time, but I can't be sure.

　　他有可能準(zhǔn)時到達(dá)，但我不敢肯定。

　　2、Be sure to give your family my regards.

　　務(wù)必代我向你的家人問好。

　　3、Even if you did see someone, you can't be sure it was him.

　　即使你確實看見有個人，也不能保證那就是他。

　　4、England must win this game to be sure of qualifying.

　　英格蘭隊必須拿下這場比賽才能確保獲得資格。

　　5、He is intelligent, to be sure, but he's also very lazy.

　　他固然聰明，但也很懶。