回上一层第十部 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
- set back
- I can't let a little accident set the project back.
- set forth
- Doan said he will set forth tomorrow.
- set off
- The attack set off war in nearby countries.
- Use italicized font to set off unfamiliar foreign words.
- set out
- Isadora sets out to understand the people's hardships.
- I'll set out early tomorrow in case traffic is bad.
