from的用法

from的用法是：two miles from shore，away from danger，far from home，to take two from four。

from [强frɔm; 弱frəm]

prep.

距,离,在不近的地方；与…失去联系(常与away连用)：

two miles from shore

离海岸两海里

away from danger

远离危险

far from home

远离家乡

离开(整体),脱离统一体(或联盟)：

to take two from four

四减二

She was absent from factory for three weeks.

她三周没有去工厂上班了.

失去…的可能性(或用处)；去除,免掉,阻止：

to be kept from going

不让走

摆脱…的占有(或控制)：

released from jail

释放出狱

protection from sun

防晒

从,自,由；从…开始：

to go from London to Paris

从伦敦到巴黎

to leave from the station

从车站离开

from start to finish

自始至终

从…起：

from noon to midnight

从中午到半夜

He has been a sick man from youth.

他从年轻时就一直是个病夫.

出于；出自(何处)；由…而来,从…来,由…出来,由…产生：

Flour is made from wheat.

面粉是由小麦制成的.

to take a comb from the pocket

从口袋掏出一把梳子

根据,依据；把(某人或某物)作为制造者、发送者、发言者、教师等：

From the evidence,he must be guilty.

根据此证据,他肯定有罪.

a letter from Mary

玛丽的来信

facts learned from reading

从阅读中获得的事实

[表示过去、一段时期、距离、动作等的起点；表示思想、行动等的根源、来源或起源]

[表示距离、缺席、排除、分离、排斥、防止、解救、脱离、离开等]

[表示差异、区别、比较等]识别,区别开来：

to know right from wrong

分清是非

to tell one from another

把东西区别开来

(表示理由、原因、动机等)因,因为,由于,出于,由…引起：

to tremble from fear

怕得发抖

to suffer from a cold

患感冒

to do something from motives of jealousy

出于妒忌干某事