现在市面上各种各样的辅导书很多，质量高低参差不齐。

The book coachs variously on market now a lot of, quality discretion is uneven.

小学三年级小孩买什么英语和数学辅导书好啊?。

I started to learn English from grade three in primary school.

今年的平安夜，我也照常“嗨”，不过我的伙伴成了成堆成堆的作业和辅导书。

This year's Christmas Eve, and I as usual "Hi", but my partner has become piles of piles of work and counseling book.