Why are you late?你为什么迟到?

Because I met the accident.

因为我遇上车祸了。

Why didn't you see the movie?

=Why did you not see the movie?

你为什么不去看那部电影?

Because I had seen it before.

因为我已经看过了。

4.how引导的疑问句：可分为两类

a." How…?"how可单独地置于疑问句的句首。

询问如何地做某事即做某事的方法、手段及健康、天气……

How do you go to school?(问方式)

I go to school by bus.我坐公共汽车。

How are you?(问健康)你身体怎样?

I'm fine. Thank you!我很好。谢谢你。

How is the weather today?(问天气)

今天天气如何?

It's cloudy.今天多云。

表示方式、方法、手段的介词

1.by ：表示交通工具，用哪一种方式

by bus 搭公车

by train 搭火车

by bike 骑自行车

by air =by plane 乘飞机

by sea =by ship 乘船

此时，名词前不加冠词。

2.with ：表示工具、器官……

with a pen 用笔

with a pencil 用铅笔

with my mouth 用我的嘴

with my eyes 用我的眼睛

How did you eat ? 你怎样吃的?

I eat with a spoon . 我用勺吃。

此时的名词前要加冠词或代词。

3.in ：表示方法

I say in English .

我用英语说。