from是介词，作介词时意思是“从……起；从……开始；寄自，得自；来自；由……（制成）；（两地的距离）离；从；从……（到）；（使）免遭；由于；根据；与……（不同）；防；不在；从……来看；妨碍”。
from的用法
1.表示时间“从...开始”“始于” from ... to ..... 从...到....
from morning to evening 从早到晚 from 1:00 to 5:00 从一点到五点
2.表示地点“从...”
from Beijing to Guangzhou 从北京到广州 choose sth from... 从...中选择某物
3.表示“离...”
be far from sth 离...远
具体距离 + from + 地点 离某地有多远
My school is far from my home. 学校离我家很远。
Beijing is 2000 km from Guangzhou. 北京离广州有2千公里。
4.表示“来自”“从...来...” be from + 地点 come from + 地点
be from + sb 是某人送的、寄的
Tom comes from America./ Tom is from America. Tom来自美国。 The gift is from my brother. 这个礼物是我哥哥送的。 The letter is from my pen pal. 这封信是我的笔友寄来的。
5.带from的固定词组
from now on 从现在开始 be different from... 与...不同 be absent from... 缺席，不在
be tired from sth 因为...而疲劳，劳累 be away from sth 离开某地
be made from sth 由...制成（看不出原材料） judging from sth 从...判断
from的例句
People came from all over the world to view her work.
人们从世界各地涌来欣赏她的作品。
People came from all over the world to view her work.
观众从世界各地涌来欣赏她的作品。
There are so many different makes to choose from.
有很多不同的型号可供选择。
The number of new students decreased from 210 to 160 this year.
今年新生人数从210减少到160。
Chinese will be on the school schedule from next year.
从明年开始中文将排进学校的课程表。
