回上一层第11部 第十课 --- 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
- to adhere to
- Boris promised to adhere to the new rules we had agreed on.
- to be sure
- To be sure, Bonnie is young, but she is very experienced.
- to date
- I have never seen anyone as talented as Belle to date.
- to stick to
- You know Dean; he can't stick to anything for more than 3 days.
