英语语法课学到了什么?急需一篇这样的作文

In my junior class for English grammar,I learned some usages of berbs.I knew how to use verbs.I knew the right place where verbs are used.Take the verb "work" as an example,I work.I am working.I worked.I have worked.I was working when he came in.I had worked before he came in.I will work.He said that I would work.I also knew the voice of verbs.e.g.The room is often cleaned.The room was cleaned yesterday.The room has been cleaned.The room is being cleaned.The room will be cleaned.Grammar is hard for me but I study hard.I am sure that I can learn English well.
亲：每天都开心V_V!
thanks!

多少字啊？大概什么学生的水平的啊