1.none pron. 没有人（东西），...中任何一个都不 adv．一点也不
none of one's business 与某人无关（别多管闲事）(one shouldn't be too nosy/interfere with)
A:I think Jack should have invited Jessica to the party.
B:It's none of your business.
none to speak of 没什么值得提的．没什么值得说的
A:So I guess it's been a year now since your last checkup. Have you had any health problems?
B:None to speak of.
2.pay vt.1.支付 2．给予（注意等），进行（访问）vi．存款，付出代价
pay a fine 交罚款(pay some money as punishment for one's violating the regulations)
A:Why didn't you stop when we first signalled?
B:l'm sorry. Will I have to pay a fine?
pay a visit 参观，拜访
例句：He stopped （to）pay a visit to George．
pay attention (to)集中注意力于…
例句：If only I paid attention in class．
pay off 有回报，值得；还清债务；成功，起作用(get reward，worth；pay the whole debt; succeed, work)
例句：1. You'll have to pay off the old Ioan before being allowed a new one.
2. The years of study and work began to pay off, and I knew I was doing well.
pay the earth for 花很大的价钱
例句：He paid the earth for the diamond ring．
pay through the nose 花太大的价钱
例句：He didh't know that the diamond ring is a fake one, and paid through the nose for it.
3.play v.1. 玩 2．参加(比赛) 3．演奏，扮演 n．1．游戏 2．比赛 3．戏剧，戏
play a/the role 发挥作用；扮演角色(have effect on; act the part of)
例句：1. The faculties and administrations know the important role intemational students play on the typical college campus.
2．Who plays the role of Hamlet?
play it by ear随机应变
A:Marty, are you doing anything special for your presentation in political science tomorrow?
B:Not really. Because the class so often turns into a discussion, l've decided to play it by ear.
play the clarinet 吹单簧管（演奏乐器是学生课余经常做的事情，故也应注意掌握）
例句：He played the clarinet in the club every weekend.
play the trumpet 吹喇叭
例句：Just imagine Mr.Show playing the trumpet．
play the violin 拉小提琴
例句：She began playing the violin when she was nine．