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1·They publish reference books.

他们出版参考书。《柯林斯英汉双解大词典》

2·He works for a company that publishes reference books.

他在一家工具书出版公司工作。《牛津词典》

3·That's right, but not those reference books.

是的，但那些参考书不是。

4·No reference books are to be taken out of the reading room without permission.

本阅览室参考书不得私自携出。《新英汉大辞典》

5·Formal language is the kind of language you find in textbooks, reference books and in business letters.

正式语体是你在教科书、参考书和商务信函中看到的用语。

6·These reference books are necessary to us.

这些参考书是我们所必需的。《新英汉大辞典》

7·Reference books may not be taken out of the reading room.

不得将参考书携出阅览室。《新英汉大辞典》

8·The library contains a large number of foreign language reference books.

图书馆有大量的外文参考书。《新英汉大辞典》

9·Whose are these reference books?

这些参考书是谁的？

10·Tony used no reference books in class.

托尼上课时不使用参考书。