activity after class的用法和样例：
- The students have many activities after class.
- Educational reform is not only in classroom but take fully advantage of activity after class to combine classroom teaching with activity after class.
- It's believed that it lies in the change of teachers' educational ideas, proper teaching methods as weel as rich and varied activities after class.
- the activity after class is the indispensably part of school live.
- scientific and technical innovation activity after class