· keep a civil tongue in one’s head说话有礼貌
a child is taught to keep a civil tongue in his head when he is small.
· blow one’s top勃然大怒
my neighbor blew his top when he saw his hedges were cut by someone.
· carry a torch for someone单方想念某人
though jane has been engaged with mr. hall, jimmy still carries a torch for her.
· have the midas touch有生财的运气，手气好
you’d better find rogers as you stock broker. he has the midas touch.
· be touch and go万分危险
the patient is out of danger now, but it was touch and go for a while.
· throw in the towel认输
she tried to save their marriage by talking her husband out of taking drugs. but she finally threw in the towel.
· have the inside track for something处于有利的地位
i’m an art student. i don’t have the inside track for applying for that job.
· keep track of someone/something掌握……的情况
he is keeping track of all my old friends.
· be on a gravy train走运，有赚钱的机会
you will be on a gravy train if you can get that antique. it is worth more money than it is offered.
· have a mind like a steel trap头脑特别快
he has a mind like a steel trap. he can remember a new word even if he meets it once.
· bark up the wrong tree弄错目标
the detective has been following the man for a week. but it turns out that he has barked up the wrong tree.
· be too quick on the trigger操之过急，行动过于仓促
you are always too quick on the trigger. you jump into his throat before he can explain.
· ask for trouble自找麻烦
are you asking for trouble by challenging the emphasis on qualities education. you are asking for trouble if you cheat in the exam.
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· blow one’s own trumpet自吹自擂
if you want to sell more, you should learn to blow your own trumpet.
· not give someone a tumble不理睬某人
though jackson has asked may to marry him for many times, she just won’t give him a tumble.