I'm sure you'll grow to like her in time.
我肯定你慢慢就会喜欢她了。
Make sure that sign's the right way up.
一定不要把这招牌挂颠倒了。
Your work is all right but I'm sure you could do better.
你的工作还算可以，但我相信你可以干得更好。
He might get there in time, but I can't be sure.
他有可能准时到达，但我不敢肯定。
I'm sure she's keeping something back from us.
我肯定她有什么事瞒着我们。