為什么?

Why?

I forgot to lock the door. (我忘了鎖門了。)

Why? (為什么?)

為什么?

How come? *比why?還要口語。

I didn't like the movie. (我不喜歡那部電影。)

How come? (為什么?)

你怎么會那么想呢?

What makes you think that?

I think she's in love with you. (我想她愛上你了。)

What makes you think that? (你怎么會那么想呢?)

Why do you say that?

Why do you think that?

告訴我為什么。

Tell me why.

What's the reason? (理由是什么?)

是怎么發(fā)生的?

How did it happen?

My car broke down. (我的汽車出故障了。)

How did it happen? (是怎么回事?)

How did that happen?

你干嗎要去做這種事呢?

What are you doing this for? *當不明白對方為什么要做毫無理由的事情的時候使用。

Why are you doing this?

What's the reason you're doing this?

Why are you doing something like this? (你干嗎要干這樣的事呢?)

你為什么干那樣的事呢?

Why did you do that?

Why did you do that? (你為什么干那樣的事呢?)

I didn't know I wasn't supposed to. (我不知道不能這樣做。)

What made you do that?

Why did you do something like that?

How could you?

How could you do that?

是什么原因呢?

What causes it? *cause“成為……的原因”、“引起”。

The river is getting dirty. (那條河越來越臟。)

What causes it? (為什么會這樣呢?)

What causes it? (是什么原因?)

Air pollution. (由于空氣污染。)

What is it caused by?

請給我解釋一下。

Explain it to me.

You'd better start explaining.

為什么不行?

Why not? *在被對方否定時，反駁對方“為什么不行?”，還含有“當然可以”、“同意”的意思。

You can't wear the red pants. (你不能穿那條紅褲子。)

Why not? They're my favorite. (為什么不能?這是我最喜歡的褲子。)

Why can't I?

Is there a reason? (有理由嗎?)

你怎么那么高興?

What are you so happy about?

What are you so happy about? (你怎么那么高興?)

It's a wonderful day. (今天是最棒的一天。)

You seem especially happy today. (你今天顯得特別高興。)

What makes you so happy? *更隨意的說法。

為了什么?

What for?

I made this big box! (我做了個這么大的箱子。)

What for? (干什么用?)For what?

What is this for? (這個用來干嘛?)

為了誰?

For who?

I bought this gift today. (今天我買了一份禮物。)

For who? (給誰買的?)

Who is it for?

你旅行的目的是什么?

What's the purpose of your visit? *出境游時，邊防檢查官的問話。

What brought you here? (你為什么來這兒?)

沒有理由不讓做吧。

No reason not to.

Why do you want to do that? (你為什么想做那件事?)

No reason not to. (沒有理由不讓做吧。)

Why not?

What's wrong with it?

Why shouldn't I?

你怎么在這兒?

Why are you here? *根據(jù)說話方式的不同，有時會讓對方聽起來不禮貌。

我告訴你為什么……

I'll tell you why...

This is the reason why...

總之，是這么回事兒。

In brief, it's like this. *比較隨便的說法，用在說出重點之前。雖然不是正式的說法，但可用于所有情況。

In short, it's like this.

In a word, it's like this.

To sum up, it's like this.

它的由來是這樣的……

It started like this...

How did Edison make the light bulb? (愛迪生是怎樣發(fā)明燈泡的呢?)

It started like this... (它的由來是這樣的……)

This is its history...

This is the way it began...

原來如此!

That's why! *比較隨便的說法。

Why doesn't it work? (為什么不動呢?)

You have to turn it on first. (你得先打開開關(guān)。)

Oh, that's why! (哦，是這樣啊!)

所以……

That's why...

That's why I like her. (所以我喜歡她。)

I see. (我明白了。)