1、他的朋友从来拿不准他什么时候会怎么做，因为他总是做些出人意料的事情
2、从他的谈话中，她了解到他有时候沉默寡言并非天性，而是情绪使然
參考答案:(1)His friend never know when, and how does he do, it is because he always make unexpectation matter.
(2)From his conversation, she understood his occasionally silence is by no means instinct, but it is his mood that causes it.
