wet blanket 使人扫兴的人
A: What do you think of Lucy?
B: She is a wet blanket!
A: Why do you think so?
B: She sulked during the entire move yesterday. None of us could enjoy the show.
keep sb at arm's length 敬而远之；疏远
A: I have a feeling that Lily is not so close to Joe as she used to be.
B: Yeah, when she heard about his background, she decided that she'd better keep him at arm's length.
A: But Joe feels miserable.
be on one's back 卧病，卧床不起
A: Where's Eric? I haven't seen him for quite a few day.
B: He is on his back now.
A: I am sorry to hear that. But he was all right last week.
B: Yeah, he was caught in the rain the other day. He has got a very bad cold.
make sb's blood boil 使……极度愤怒
A: I want to sue the teachers for their physical punishment at school.
B: It's all right as long as it doesn't harm the children, or they won't behave themselves.
A: Why do you also have the stupid idea? That's brutal! It makes my blood boil to see our daughter standing in class for a long time.
to the backbone 彻底地
A: Helen is going out with Tom.
B: I hope not. Tom is a liar to the backbone.
A: How come?
B: He never tells anything true.
sad dog 粗野的家伙
A: Ouch, you hurt me!
B: You're no better. You knocked off my glasses.
A: You deserve it!
B: You, such a sad dog!
would give one's right arm 要是……该多好
A: Listen! Someone is singing in the classroom.
B: Oh, it's Billy. The song is beautiful!
A: I would give right arm to be able to sing like Billy.
