根据以英语作为母语的人数计算，英语可能是世界上第三大语言，但它是世界上最广泛的第二语言。精品小编准备了寒假高一英语复习知识点，希望你喜欢。

1. be good to 对……友好

be good for 对……有益;be bad to…/be bad for…

I will be good to other people.我会善良的对待其他人.

It would be good for you to spend a holiday in the sun. 在有阳光的地方度假会给你带来很多好处。

The Olympics will be good for business. 奥运会的召开将有利于商业的发展。

be good at 擅长make good 有成就;成功as good as 实际上;几乎等于

a good deal 许多，大量 彻底的;完全的;痛快的to have a good drink 喝个痛快

2. add up 加起来

add up to 合计，总计

add… to 把……加到…… add to 增加

Add up your score and see how many points you get? 把你的分数加起来，看看得多少?

Some people can add up quite easily in their heads, but not all.

Good friends do not add up what they do for each other; instead they offer help when it is needed.

The figures add up to 270. 这些数字加起来是270。

You shouldn’t add fuel to the flame 你不应该火上加油

Fireworks added to the attraction of the festival night. 焰火使节日的夜晚更加生色。

The bad weather added to the shipwrecked sailors’ difficulties.恶劣的天气增加了失事船只的船员们的困难。

Your friend can not go until he finishes cleaning his bike.

not…until/till 意思是“直到…才”，表示主句谓语所表示的动作直到until状语所表示的时间才发生，主句的谓语动词表示的是动作的开始，动词既可以是延续性的，也可以是非延续性的。

They did not come back until eleven. 他们会在十一点后回来。

I did not notice it until yesterday.我一直到昨天才注重到它。

4. You had to pay to get it repaired

get sth done 使……完成/让某人做某事

5. You will ignore the bell and go somewhere quiet to calm your friend down.

I said hello to her, but she ignored me completely!

calm …down使平息, 使平静

calm down平息/平静下来

The crying child soon calmed down.哭闹的小孩不多一会就安静下来。

It was a long time before he managed to calm himself down. 过了很久他才努力使自己冷静下来。

We tried to calm him down, but he kept crying.

我们试图让他平静下来，但他仍不停地哭着。