一：表示相对，针对
be strange (common, new, familiar, peculiar, distinct, sensitive, immune, vulnerable, indispensable) to
Air is indispensable to life.
Aircrafts are vulnerable to interference caused by radiation.
This injection will make you immune to infection.
二：表示对比，比较
1：以-ior结尾的形容词，后接介词to表示比较，如：superior ,inferior,prior,senior,junior
The quarrel happened prior to my arrival.
2: 一些本身就含有比较或比拟意思的形容词，如equal，similar，equivalent，analogous
A is similar to B in many ways.
3：表示一些先后顺序的形容词，如：second,subsequent,next,preliminary,preparatory
Subsequent to the war,they returned to their hometown.
三种基本用法:
1.做介词，表示“到，向，往”，如go to，fly
to，后面跟名词作定语，构成介宾结构。
2.动词不定式的标志，很常见的，如:want to
do, be happy to do.
注意有一些看似不定式但实为介词的结构，如
look forward to, pay attention to，他们后面
跟动词的ing形式作宾语，千万不能跟原形。
3.其他的如to+do作定语等等基本都是以上两
种用法的延伸。
a('title');
英语介词to的常见用法:
prep.
1. 向,往,到
She lives in the house to the right.
她住在右边的房子里。
This road leads to Paris.
这条路通往巴黎。
2.(表示距离)离
3.(表示时间)直到,在...之前
He wrote from morning to night.
他从早到晚写东西。
4.(表示程度、范围)到,达
He was wet to the skin.
他浑身湿透了。
5.趋于;(变)成,(变)到
Things are going from bad to worse.
情形每况愈下。
6(夫示位罟)对百对
7.(表示接近、接触)在,于,紧贴着
8.(表示对象)对,向
Excessive drinking did harm to his health.
过量饮酒损害了他的健康。
9.属于,归于
I've lost the key to the house.
我把屋子的钥匙丢失了。
10.(表示比较、对比)比
This engine is superior to that one.
这台发动机比那台要好。
11.(表示比例关系)每
12.对于,关于
What is her attitude to the issue?
她对这个问题抱什么态度?
13.与...一致,按...
Modern paintings are not to my taste.
现代画不合我的口味
14.为了,用作
We sat down to dinner at six.
我们六点钟坐下来吃饭。
15.致使
To her delight, she passed the examination.
使她高兴的是她考试及格了。16.由于 ad.
1.向前
2.(门等)关上
She pushed the door to.
她用力把门关上。
3.恢复意识
The girl came to after a while.
过了一会儿那个女孩醒过来了。
4.(做)起来,着手
They fell to with great relish
他们津津有味地吃了起来。
