1. Children often dislike homework.孩子们通常都不喜欢家庭作业。

2. He is often late for class.他上课时常迟到。

3. Man is often taller than woman.一般说来男子比女子高。

4. How often does the train run?这火车多久一班？

5. How often do you go there?你多久去那里一次？