回上一层第叁部 第八课 --- 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
- catch up
- Howard would be surprised to know you've caught up with him.
- Tim was caught up in the investigation only because he was at the wrong place at the wrong time.
- change one's mind
- Fonda had changed his mind several times about the interior design.
- Mr. Harvard will never change his mind.
- charge up
- You need to charge up the batteries first.
- check in
- Did Mr. Hitler check in at Holiday Inn yet?
