It looks like you’re new here.
看来你是新来的。
It looks like you don’t know what happened.
看起来你不知道发生了什么。
Perhaps she knows the answer.
也许她知道答案。
If I had to take a guess, I’d say he’s 40.
如果要我猜的话,我猜他40岁了。
Maybe he wants to quit his job.
也许他想辞职。
It’s difficult to say, but I think this is the best English course.
这很难说,但我认为这是最好的英语课程。