大家好!
I've been looking for an online resource for Chinese grammar for a long time, with relatively little success. Most pages are either poorly written or not in depth enough to suit my needs. This afternoon, I stumbled across a link to the Chinese grammar wiki on another website, and I am over the moon.
It's still a work in progress, but I checked out a few articles and they've been fantastic. Clear explanations, structure formulas, and plenty of examples. It's also free, hosted by a Chinese learning company in 上海.
You should ABSOLUTELY check it out. Let me know what you think in the comments! http://resources.allsetlearning.com/chinese/grammar/Main_Page