1. To ask for and express certainty.
Asking for certainty:
- Really?
-Are you sure?
-Are you certain?
-Are you really certain about that, Sir/Miss?
Expressing certainty
-I'm sure about it.
-I'm quite sure that she will come soon.
-I'm absolutely sure about the news.
-I have no doubt about it.
-I'm absolutely certain that he told me the truth.
-I'm sure about .....
-I have no doubt about ....
Asking for certainty:
- Really?
-Are you sure?
-Are you certain?
-Are you really certain about that, Sir/Miss?
Expressing certainty
-I'm sure about it.
-I'm quite sure that she will come soon.
-I'm absolutely sure about the news.
-I have no doubt about it.
-I'm absolutely certain that he told me the truth.
-I'm sure about .....
-I have no doubt about ....