These books are mine while those (ones) are my brother's.

这些书是我的，而那些是我兄弟的。

youdao

These books are of great use to us while those are useless.

这些书对我们很有用，而那些是无用的。

youdao

School in the south are better equipped, while those in the north are relatively poor.

南方的学校设备较好，而北方的则相对差一些。

youdao

youdao

youdao