be confident of

• 信 ...； 确信 ...

be confident of的用法和样例：

例句

1. We have had no acknowledgement of our letter.
   我们没有收到过确认去信已收到的回音。
2. These letters were smuggled out of prison.
   这些信是从监牢中偷偷带出来的。
3. The story convinced everyone of his innocence.
   这一番话使大家确信他是无辜的。
4. I am sure we shall be very comfortable.
   我确信我们会很舒适的。