“我从Mr. Ray 的email 中知道了你的email 地址”怎么说。 I have your address from Mr. Ray's email.这样对么？ have 可以换成got 么？ 还可以怎样说？

I always cannot tell the difference among am/is/are, have/has, do/does, had. When i write a sentence, i usually cannot figure out what the difference between them. And i usually make mistakes. Please help. Should i learn grammar about tense?

To Be An Audience at A Competition 2011, it is the 90th birthday of CCP(Chinese Communist Party). Our Company holded a competition of Singing Revolutionary Songs of Celebrating Establishment of CCP. It is final competition today. I watched the performance for nearly 2 hours. I enjoyed it so much.

First notebook entry: Introducing myself My name is MaJia. My hometown is Shenyang, China, and now I'm working in Beijing. When I was a school student, my favorite subject is English. But because I am a little lazy, my English knowledge is still stopped at a very low level. After graduted from the university, I have no systematic experience of English study. I admire people who can speak English fluently. And hope one day i can do that.