帮解答一下问题

Then in the middle of the day you can enjoy a Chinese lunch

a 应该去掉吗？

There are different kinds of books as well many Chinese paintings.

as well 后面应该加上 as 吗？

1、需要加a，lunch前面有修饰词（Chinese）时，要加a，而且have lunch表示实际吃饭时用；

2、要加as，as well是副词， as well as是连词，用来连接两个并列的单词。