I had never really learned to type properly.

　　我從未真正地學(xué)會(huì)正確地打字。

　　Is there a particular type of book he enjoys?

　　他有特別喜愛的哪一類書籍嗎？

　　This type of work is uncharted territory for us.

　　我們從未涉足過這類工作。