from和since的区别

since、for和from都含有“因为”的意思。

1）since+从句
例句：
He must have taken the book since it isn't here.
他一定是把书拿走了,因为书已不在这里了。
Since it is so hot, let's go swimming.
既然天气这么热,我们去游泳吧。
2）for+名词或动名词，多用于表示内在的、心理的原因。
例句：
I am sorry for what I said to you. 我后悔不该对你讲那些话。
3）from+名词或动名词，表示自然的或直接的原因。
例句：
He wasn't ill; he stayed in bed from laziness. 他没病,躺在床上是因懒惰之故。
He is trembling from fear. 他吓得发抖。