英语四.级语法辨析：介词from
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英语四.级语法用法辨析：介词from用法归纳
一、基本用法归纳
1. (表示起点)从
He ran all the way home from school. 他从学校一路跑回家。
Our prices start from ￡2.50 a bottle. 我们的售-价从2.5英镑一瓶开始。
2. (表出处、来源等)出自，来自，从…而来
This beer is imported from Mexico. 这种啤酒是从墨西哥进口的。
3. (表原因)由于，因为
They are tired out from planting the corn yesterday. 由于昨天种了一天玉米，今天他们都十分疲劳。
4.(表距离、脱离，分离)离
The house is five miles from the town. 这房子离市镇有5英里路。
5. (表原料、材料)用，由
Paper is made from wood. 纸用木材做原料。
6.(表避免、阻止、遮蔽)避免，防止，以免
He covered his wife from the man's blows with his body. 他用身体挡住那人，从而使他妻子免遭打击。
7.(表区别、差异)由，与(…不同)
I can't tell one twin from the other. 我分不出双胞胎中谁是谁。
8.(表判断、观点)由(…来看)，根据(…来判断)
From her looks you would say she was about twenty. 从她的模样看，你会说她约摸20岁。
9.(表根据、依据)凭，据：He played the music from memory. 他凭记忆演奏了那首曲子。
二、用法搭配归纳
1. from…on 从…起
He never spoke to her again from that day on. 从那天以后他再没有同她说过话。
2. from…to… 从…到…
He flew from Beijing to Shanghai. 他坐飞机从北京到上海。
三、语法说明与惯用法说明
1. 有时其后可接介词短语
Choose a book from among these. 从这些书中选一本吧。
比较：
I took it from the bed. 我从床那儿(或床上)拿的。
I took it from under the bed. 我从床下拿的。
注意，下面一句用了 from where(引导非限制性定语从句)，而未用from which，其中的where=in the tree，即 from where=from in the tree：
He hid himself in a tree， from where he could see the enemy in the distance. 他躲在一棵树上，从那儿他可以看到远处的敌人。
2. 有时其后可接when， where引导的宾语从句(可视为其前省略了the time， the place)：
He didn't speak to me from when we moved in. 从我们迁入之时起，他没和我说过话。
From where I stood I could see everything clearly. 从我站的地方我一切都看得清清楚楚。
3. 某些由from…to…构成的习语通常不带冠词：
from house to house 挨家挨户
from time to time 不时地
from day to day 一天天地
from head to foot 从头至脚， 全身
from beginning to end从头至尾
from hand to mouth 赚一点吃一点， 仅能糊口
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