我妹要写英语造句：简单句，If从句，目的状语从句，时间状语从句，If条件从句

简单句I am going to school
If从句I don't know if you are a student
目的状语从句I study hard in order to have a good mark
时间状语从句when i was reading the book,my mother came in
If条件从句If it doesn't rain tomorrow,we'll go to the zoo
不好可以补充问题,(*^__^*) 嘻嘻……

I'm a student 简单句
If I were you ,I would work hard(虚拟）
To have a better life ,we should study hard
When my mother came ,I pretend to study
If it rain tomorrow ,we might be stay at home
可能不好哈