because 是從屬連詞,接表示直接原因的從句,一般放在主句的后面,也可放在主句前面,它表示的語(yǔ)氣最強(qiáng),在回答why的問句時(shí),必須用because.
例如：The swimming pool won't be open today because they're making repairs.
游泳池今天不開放,因?yàn)樗麄冊(cè)谛蘩?
Why did you move to France?
你們?yōu)槭裁窗岬椒▏?guó)?
Because my father found work in Paris.
因?yàn)槲腋赣H在巴黎找到了工作.
注意：在英語(yǔ)中用了because后,不可再用so.
for 是并列連詞,用來附帶解釋說明前一分句的原因或理由,for引導(dǎo)的并列句,一般放在所要說明的句子的后面.
例如：I went to see him,for I had something to tell him.
我去見他,因?yàn)槲矣惺乱嬖V他.
只有therefore是表示結(jié)果的意思而不是原因.