摘要：all of a sudden 突然；猛地，相当于suddenly

1. ahead of 在……之前

I finished my homework ahead of the test.

考试前，我完成了作业。

She arrived at school ahead of me.

她比我先到学校。

2. because of 因为；由于

The football game was canceled because of the rain.

因为下雨，足球比赛取消了。

We stayed home because of the rain.

因为下雨，我们呆在家里。

3. instead of 代替；而不是

He ate an apple instead of candy.

他吃了苹果而不是糖果。

I drank milk instead of coffee because it’s healthier.

我喝了牛奶而不是咖啡，因为它更健康。

Let’s walk instead of taking the bus.

我们走路吧，别坐公交车了。

4. first of all 首先

First of all, open your books to page 10.

首先，打开课本到第10页。

First of all, turn off the lights.

首先，把灯关掉。

5. all of a sudden 突然；猛地，相当于suddenly

All of a sudden, the dog started barking.

突然，狗开始叫了。

All of a sudden, we heard thunder in the sky.

突然，我们听到了雷声。

来源：幻想家