1. 我不确定,但我认为这件事还应该多加讨论。
I'm not sure,but I think it should have more discussion.
2. 我不太肯定,但我记得期末考试是在下个周一早晨。
I'm not sure,but I remember that the final exam is on the morning of the next monday.
3. 我不太确定,但我想我们可以跟老板再讲讲价。
I'm not sure,but I think we can have a bargain with the boss again.