!. chip in : contribute money 随份子
"it's Mr. Lee's birthday soon. Let's each chip in $20 and buy a gift."
2. on top of that : in addition to ; also (say this when the last piece of information is important)
"I'm very busy. I have two children, I work full-time, and on top of that I take evening classes."
3. Can I take a rain check? : Can we change the plan to another time in the future?
"I have to cancel our plans for lunch today. Can I take a rain check?"
4. a win-win situation : a situation that has good results in many ways. 双赢
"I love to bake. You love to eat. Marrying you was a win-win situation."
5. gone for the day : say this when someone will not come back that day
"He's gone for the day. He will be in the office tomorrow morning."
6. get sidetracked : become distracted from something important
"I didn't finish my work. There was a good movie on TV, so I got sidetracked."
7. about to do something : going to do something very soon
"You'd better talk to him now. He's about to leave."
8. stay up : stay awake later than one's usual bedtime.
"You go to sleep. I'm going to stay up>"
9. make up my mind : decide
"He's finally made up his mind. He's going to study business."
10. get cut off : lose the connection during a telephone call
"There's something werong with my phone. I often get cut off."