Jack:"Betty, will you marry me?"

　　Betty was so happy. She told her best friend next day:"Jack and I are going to be married next month. He popped the question last night, suddenly and unexpectedly, when we were walking in the park. I'm so happy!"

　　popped the question: Informal.To propose marriage. 求婚

　　Jane给他的女友 Selma打电话：

　　"Selma, I'm going to be near your place tonight. Is it OK if I pop in for a minute?"

　　pop in:To visit briefly: just popped by to say hello. 短时间拜访

　　近义词：drop in;visit;pay a visit

　　又如：I was passing by, noticed the light was on, so I thought I would just pop in for a chat.

　　Jon和他的兄弟Peter在通电话：

　　"Peter, where have you been? I phoned you several times this afternoon."

　　Perter:" Oh, I popped out to take the dog for a walk. Sorry! Why don't you pop in this evening?"

　　popped out : exit briefly;move out of or depart from; leave the room. 短时间外出

　　近义词：exit, get out, go out, leave

　　又如：I'm going to pop out to the shops for ten minutes. Don't answer the door if anyone calls.

　　Alice在给他的老公Don打电话：

　　"Don, Mrs.Short on the tenth floor has a problem with her TV. Will you pop up this evening helping her?"

　　pop up:appear suddenly or unexpectedly 突然出现

　　又如：I hadn't seen him for years. Then he just popped up one day at the club we used to belong to.

　　妈妈对儿子说：

　　" Jimmy, we don't have any suger. Will you pop over the road to the shop and buy a packer?"

　　pop over: 赶到

　　又如：My new neighbours across the road had just moved in so I popped over to see them.

　　Derek对他的朋友Bob说：

　　" Bob, old Mr.Smith on the second floor is very lonely. I said I'd pop round tonight and keep him company."

　　pop round:去做客(时间不确定)

　　又如：A: Would you like to pop round one night this week? Would Wednesday evening suit you? B: I';d love to.

　　Brenda和老公Sam的对话：

　　" Sam, where did you buy that beautiful tie?"

　　Sam:" I needed a new tie, so I popped into the department store and bought it."

　　popped into:To move quickly or unexpectedly 突然冲入

　　又如：The farm popped into view as we turned the corner.

　　小结：

　　1 pop in, pop out, pop up和pop over基本都是appearing or disappearing (popping out) briefly and casually的意思。

　　2 当然，pop out 还有另外一个含义：burst open with a short sharpish sound 突然爆开，发出砰响

　　例如：He had shaken the champagne bottle and the cork popped out before he was ready to pour.