in-,不，非，capable,有能力的。

1. He lost his job for allegedly being incapable.

据说他由于软弱无能而丢掉了工作。

2. He was a man incapable of violence.

他不是个会施暴的人。

3. She was a very honest person who was incapable of dissembling.

她是一个非常诚实的人，不会伪装。

4. The children seem to be totally incapable of working by themselves.

孩子们好像完全不能独自做事。

5. He would be incapable of committing such a cruel deed.

他不会做出这么残忍的事.