from的用法归纳分点回答

　　from的用法：

　　1.从...起,始于 eg:She is singing from morning to night.她从早唱到晚.

　　2.从;由

　　eg:He rose from office boy to managing director in fifteen years.

　　他十五年里从办公室勤杂员升到总经理.

　　3.离(开) eg:Our school is two miles from the station.我们学校离车站两英里.

　　4.从...来;出自 eg:He comes from Shanghai.他来自上海.

　　5.(表示去除、免掉、阻止、剥夺等) eg:The pill will relieve you from pain.这药丸将使你免受痛苦.

　　6.(表示区别、比较) eg:He is old enough to know right from wrong.他已长大,能够辨别是非了.

　　7.(表示原料)由 eg:Flour is made from wheat.面粉由小麦制成.

　　8.因为,由于;出于

　　eg:He wasn't ill; he stayed in bed from laziness.他没病,躺在床上是因懒惰之故.