第二部 第叁课 --- 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
- back down
- Joel backed down from the argument when he realized the error in his reasoning.
- back off
- The robber held a gun to force the police to back off.
- back up
- Remember to back up your data every other week.
- I need someone to back me up during the demonstration.
- bear in mind
- Please bear in mind that the bus arrives at noon.