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在描述天气时，常以it作主语，指代天、天气、老天爷。
sent. 下雨, 天下雨
It is likely that it will rain in the evening.
Should it rain tomorrow, we should have to put off the visit to the Great Wall.
She carries an umbrella in case it rains.
I'm inclined to go to the beach tomorrow if it doesn't rain.
Please keep inside of the house while it 's raining.
It has only sprinkled, but the roads are slick
A rainbow shows as it is still drizzling.
When it drizzles in summer, hiking can be pleasant
The people have umbrellas because it is hailing outside.
It hailed for an hour
sent. 天在下雪
If it should snow tomorrow, they couldn't go out.
He bet me dollars to doughnuts that it would snow today.
Jane dreamed it was snowing, but in reality, it was very warm.
A child in winter gear is hiding inside a cave made of snow while it is snowing.
A group of men are indoors watching football while it snows outside.
The 6 people are wearing dresses and riding on a train while it is pouring outside.
sent. 天在打雷
It was thundering out, and all the children stayed inside the school.
Whenever it thunders, my dog crawls under the bed