英语文法：推荐网站

An Online Grammar Book. It is a brief reference tool to help you with common grammatical errors.

The Internet Grammar of English. It provides an online grammar course mainly for university undergraduates.

English Grammar FAQ. An English linguistics professor presents English Grammar using FAQ format.

[ErosAltar]

http://www.erosaltar.com/English/basicgrammar/basicgrammar.html
这以网页语法解说精辟，附带相关习题。