- DaSaGwaLv 77 年前最佳解答
The way you ask question is hard to get a good idea, let me put them into sentences, then you will have better idea for their difference:
He also thinks that he can be successful in his career.
But, I think so.
2013-10-20 12:12:53 補充：
I think so ==> I DON'T think so.