请教几个句子用英语怎么翻译

(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.

His friend is usually unpredicted fot what he is going to do and he always do something unexpected.

his friends has been never sure about how and when he will do it, because he always do something unecpected.

from the conversation, she learnt that sometimes taciturnity is not his nature but emotion as it is.

1.His friends never know he would do what at anytime,because he always do something unexpected.

2.From his talking,she realized that it's not the natural character but the depression made him silence sometimes.

1.His friend never knows how and when to do,for he always does something unexpected.

2.Judging from his talking ,she understood he was sometimes silent not because born but bec