第八部 第七課 --- 請重複跟讀，直到可以於聲音檔的留空之間唸完整句為止；熟練之後您必將可以 "脫口而出" 地說出標準的美式英語
- not to mention
- You can't even fry an egg, not to mention a fish.
- now and then
- The refrigerator breaks down every now and then.
- on and off
- Danielle went to school on and off during her childhood.
- It has been raining on and off since noon.
- on and on
- Dawn kept chatting on the phone on and on.