1. 用于指时间
It's still early. 时间还早。
It's already nine o'clock. 已是9点了。
It's three years since he left here. 他离开这儿已有3年了。
2. 用于指距离
It's a long way from here. 从这儿去很远。
How far is it from here to the station? 从这儿去车站有多远?
3. 用于指环境
It's noisy in here. 这里面很嘈杂。
It was very quiet in the garden. 花园里很安静。
4. 用于指天气等自然现象
It's very cold today. 今天很冷。
It is raining. 正在下雨。
It's 37℃ today. 今天气温是摄氏37度。
5. 用于笼统地谈论某情况
I cannot help it. 没办法了。
"How's it going?" "Well, not so good." “情况如何?”“不是很好。”
6. 用于某些习语
(1) make it 及时赶到;成功,办成:
You can make it if you hurry. 如果你赶快还可以及时赶到。
He wants to make it as a writer. 他想作一名作家而一举成名。
You needn't worry; he will make it. 你不必担心,他会办成的。
(2) catch it 被责骂,受处罚:
If I come home late I'll catch it from my mother. 如果我回家晚了,我妈妈会骂我。