回上一层第叁部 第四课 --- 请重复跟读，直到可以於声音档的留空之间唸完整句為止；熟练之后您必将可以 "脱口而出" 地说出标準的美式英语
- call back
- Ask her to call me back later.
- call for
- The occasion calls for speedy decision making.
- Susan will call for you tomorrow morning.
- call off
- They called the wedding off when it began to rain hard.
- Please call off your dogs before they bite me.
- call on
- The school calls on the students to clean the campus.
