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 we should dicuss more about it.
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 think the final exam is in the next monday morning
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 the we can bargin with the boss