1、從...起，始于
She is singing from morning to night.她從早唱到晚。
2、從;由
He rose from office boy to managing director in fifteen years.
他十五年里從辦公室勤雜員升到總經(jīng)理。
3、用來表示做為起點的特定地點或時間，
walked home from the station
從家走到車站
4、從...來;出自
He comes from Shanghai.他來自上海。
5、表示去除、免掉、阻止、剝奪等
The pill will relieve you from pain.這藥丸將使你免受痛苦。
6、表示區(qū)別、比較
He is old enough to know right from wrong.他已長大,能夠辨別是非了。
7、由于：用來指定來源、起因、方法或用具：
a note from the teacher
老師寫的條
taking a book from the shelf.
從架子上拿本書