Dear teachers,My name is Zhangji. I am Chinese. Living in Zhuhai city , China. I have many grammar questions in learning English. The local teachers can't explain them clearly. In addition, I can't find relevant materials about them. Therefore, I can only ask teachers here. I hope to get your warm help. Of course , If you want to learn Chinese, I am willing to teach you for free. My mailbox is: [email protected]