1.break v. 破裂，(云，雾等)消散
A: The heavy clouds are breaking at last!
B : Thank God!
2.brew v. (风暴等)酝酿
A: A storm is brewing in the west.
B: Too bad!
3.clear up (天气等)放晴
A: It seems to be clearing up.
B: I hope so.
4.cloud over 云层密布
A: I think it's going to cloud over.
B: God, I hope it will he fine tomorrow.
5.damp a. 潮湿的.
A: A little damp, don't you agree?
B: Oh, Yes.Look at those thick clouds.
6.downpour n. 倾盆大雨
A: Gosh! We are having a downpour?
B: Let's have a rest .
7.drizzly a. 下着蒙蒙细雨的
A: It's said to turn drizzly this afternoon.
B: Good. We haven't had rain for almost one month.
8.drop n. 滴
A: A storm is wining.
B: I can feel some small drops of rain now.
9.intermittently ad. 间歇地，断断续续地
A: It has been raining intermittently all day.
B: I hate this. There is too much rain.
10.last v. 持续
A: Do you think the rain will last long?
B: Who knows!There doesn't seem to be any sign of it stopping.
11.overcast a. 多云的，阴暗的
A: The skies were overcast but it's clear now.
B: But I can still see some traces.
12.pour v. 倒，灌，注
A: It's pouring.
B: No breezes, no sunshine, it's driving me crazy!
13.rainbow n. 彩虹
A: Wow!What a perfect rainbow!
B: It has almost every color.
14.rain eats and dogs 下倾盆大雨
A: How do you find the weather there?
B: It's raining cats and dogs, and I'm caught in it.
15.rainy a. 下雨的，多雨的
A: I hate this rainy day.
B: Well, I hope it won't last long.
16.set in 到来，开始
A: The rain is setting in.
B: The broadcast says it won't last long.
17.shower n. 阵雨
A: It's only a shower.
B: Uh-huh. Now I can，the bright sun again.
18.spot v. 下小雨
A: Look! It's beginning to spot!
B: And it's getting dark, too.
19.subside v. 平静下来，平息
A: The heavy rain is subsiding.
B: I suppose it would pass over soon.
20.thunder rain 雷阵雨
A: It seems as if a thunder rain is coming up.
B: Never mind. As long as it doesn't rain, we'll start.