A:I'm pretty sure that Jim will turn out to be a good lawyer.
A:我敢肯定吉姆将来会成为一个好律师的。

B:How can you be so sure?
B：你怎么那么肯定？

A:He knows a lot about law and he's eloquent, too.
A：他懂得很多法律知识，而且又能言善辩。