because用作連詞，基本意思是“因?yàn)椤?強(qiáng)調(diào)直接造成某種結(jié)果的理由和原因?？梢龑?dǎo)狀語從句和表語從句，也可用于強(qiáng)調(diào)句和省略句。

1.because的基本意思是“因?yàn)椤?強(qiáng)調(diào)直接造成某種結(jié)果的理由和原因,所引導(dǎo)的原因狀語從句多置于主句之后,有時(shí)為了強(qiáng)調(diào),也可置于主句之前,并用逗號與句子的其他部分隔開。

I study because I want to learn.

我學(xué)習(xí)是因?yàn)槲蚁雽W(xué)到知識。

Just because they make more money than I do, they think they are so superior.

只因?yàn)樗麄儝赍X比我多,他們就認(rèn)為自己高人一等。

2.because還可用來引導(dǎo)讓步狀語從句,這時(shí),通常用于否定句或疑問句中。

Because the husband is vile—should the wife be vile too?

做丈夫的不正派,是不是做妻子的也應(yīng)不正派呢?

3.because有時(shí)還可引導(dǎo)表語從句。

This is because the earth is travelling round the sun.

這是因?yàn)榈厍蛟趪@太陽運(yùn)轉(zhuǎn)。

This is because the direct current flows in a wire always in one direction.

這是由于直流電在導(dǎo)線內(nèi)總是沿著一個(gè)方向流動(dòng)。

4.because可用于強(qiáng)調(diào)句。

It is because he is honest that we like him.

是因?yàn)樗\實(shí)我們才喜歡他。

5.not...because...結(jié)構(gòu)有時(shí)否定主句，有時(shí)否定從句，須根據(jù)上下文正確判斷。一般來說，否定主句時(shí)because前多有逗號，而如果because前有just，則多半否定從句。

I didn't go, because I was afraid.

我沒有去是因?yàn)榕隆?/p>

Because I was ill,I didn't go to school yesterday.

因?yàn)椴×?所以昨天我沒有去上學(xué)。

6.because可用于省略句

The room was uncomfortable because too hot.

因?yàn)樘珶?，這房間很不舒服。