對[duì] 基本解释：
新英汉大词典：
- 对(對)[duì]
- 动词- （回答） answer; reply:
have nothing to say in reply无言以对
- （对待; 对付） treat; cope with; counter:sword against sword and spear against spear;刀对刀，枪对枪
concern oneself with facts and not with individuals;对事不对人
- （朝; 向; 面对） be trained on; be directed at; face:train one's gun on the enemy;把枪口对准敌人
What she said was not directed at you.她的话不是对着你的。
- （使两个东西配合或接触） bring (two things) into contact; fit one into the other:exchange code words;对暗号
Give me a light, please.对个火儿。
- （投合; 适合） suit; agree; get along:suit one down to the ground;对心眼儿
Sour-sweet fish agreed very well with him.糖醋鱼很对他的胃口。
- （把两个东西放在一起互相比较，看是否相符合） compare; check; identify:identify the handwriting;对笔迹
check numbers对号码
- （调整使合于一定标准） set; adjust:set one's watch; synchronize watches;对表
adjust the focus of a telescope;对好望远镜的距离
- （搀和） mix; add:Add some water to the tea; it's too strong for me.茶太浓了，给我对点儿水。
The milk has been adulterated with water.牛奶里对水了。
- 副词- （二者相对; 彼此相向） mutually; face to face:
(two people) have a drink together;对饮
sit facing each other对坐
- （平均分成两份）divide into halves:go halves;split fifty-fifty对股劈
- 形容词- （对面的; 敌对的） opposite; opposing:
the opposite bank; the other side of the river对岸
- （相合; 正确; 正常）right; correct:All right, just go ahead.对，就这么办。
It's his fault.是他的不对。
- 名词- （对偶的词句; 对联） antithetical couplet; couplet:
wedding couplet喜对
- 量词- （双） pair; couple:
a married couple;一对夫妇
a pair of vases;一对花瓶
- 介词- （引进对象或事物的关系者）:
He demands perfection in others, but cannot see faults in himself.他对别人求全责备，对自身的缺点却视而不见。
Water is to fish what air is to man.水对鱼的关系正如空气对人的关系一样。
例句与用法：
Smoking is injurious to the health.
Don't be so rude to your parents!
Life seems to have lost most of its savor for him.
He is ashamed for his former dishonorable action.
This situation is unfavorable for us.
Don't be so severe to her---she couldn't help it.
I'm sure he took my parking space just to spite me.
To Christians, Jesus Christ is the Saviour.