for sure

形容词 for sure:

1. not open to doubt

副词 for sure:

1. definitely or positively (`sure' is sometimes used informally for `surely')
   同义词：surely, certainly, sure, for certain, sure enough, sure as shooting

1. I think he lives there but I couldn't say for sure.
   我想他是住在那里的，但我不敢肯定。
2. For sure?
   肯定吗?
3. He'll come for sure.
   他肯定会来的。
4. That's for sure.
   那是肯定的。
5. I Don't know for sure.
   我不能肯定。
6. She won't dare do that again, and that's for sure.
   她不敢再干那事了，那是毫无疑问的。
7. That's for sure!
   这是毫无疑问的！