原因狀語(yǔ)從句比較：because, since, as和for

1)　because語(yǔ)勢最強，用來(lái)說(shuō)明人所不知的原因，回答why提出的問(wèn)題。當原因是顯而易見(jiàn)的或已為人們所知，就用as或 since。

I didn't go, because I was afraid.

Since /As the weather is so bad, we have to delay our journey.

['dʒə:ni] n. 旅行; 行程

2)　由because引導的從句如果放在句末，且前面有逗 號，則可以用for來(lái)代替。但如果不是說(shuō)明直接原因，而是多種情況加以推斷，就只能用for。

He is absent today, because / for he is ill.

Absent ['æbsənt] adj. 缺席的, 不在場(chǎng)的

He must be ill, for he is absent today.

　　 歡迎使用手機、平板等移動(dòng)設備訪(fǎng)問(wèn)中考網(wǎng)，2024中考一路陪伴同行！>>點(diǎn)擊查看