1．Judging from his accent (口音), he must be from Australia.
2．What should I do when lightning (闪电) strikes me?
3．Generally speaking, the eastern (东部的) part of China is more developed than the west.
4．At his request (请求), we delayed our performance.
5．Don't command (命令) others to do what they are unwilling to do.
6．Try to remember all the words and expressions (express) in this unit.
7．One of my classmates is from an African (Africa) country.
8．He walked along in the shadows, hoping no one would recognize (recognition) him.
9．I like all the seasons of the year, especially (especial) spring.
10．Although he is not from Spain, he has a good command of Spanish (Spain)．
