To
1.向；至；往：She's going to London.她要去伦敦.Turn to the left.向左转.Pisa is to the west of Florence.比萨在佛罗伦萨的西面.He has gone to school.他上学去了.
2.（用于表示一系列事物或一段时间的尽头或限度） 直到：from Monday to Friday从星期一到星期五 from beginning to end 从开始到结束.
3.用于表示接受者：Give that to me.把那个给我.I am very grateful to my parents.我很感激我的父母.What have you done to your hair?你把头发怎么搞的?Sorry I didn't realize you were talking to me.对不起,我不知道你是在跟我说话.
4接触到；针对：He put his hands to his ears.他将两手捂住耳朵.They sat back to back.他们背对背坐着.She made no reference to her personal problems.他没有提及自己的个人问题.
5.达到某种状态：The meat was cooked to perfection.这肉煮得恰到好处.His speech reduced her to tears(=make her cry).他的话令她流泪.
6.（用于引出比较中的另一部分）：I prefer theatre to opera.我喜欢戏剧,甚于歌剧.
7.（用于表示数量每```等于：How many dollars are there to the euro?多少美元等于一欧元?
8.（用于表示时间）在```之前：It's ten to three.(=ten minutes before three o'clock).现在是三点差十分.
9.（用于表达对某物的看法或感受）：To me,it was the wrong decision.我认为那是错误的决定.It sounded liked a good idea to me.我觉得这听起来是个好主意.I don't think our friendship means anything to him.我认为我们的友谊对他说毫不重要.
10.（用于表达某人对某事的反应或态度）：To my surprise,I saw two strangers coming out of my house.我看见两个陌生人从我家里走出来,吃了一惊.His paintings aren't really to my taste.他的画真的不符合我的口味.
11.（与动词连用,构成不定式.）：I want to go home now.我现在想回家.Don't forget to write.别忘记写信来.I didin't know what to do.我当时不知道该怎么办.
12.（指门）关上Push the door to.把门推一推关上.
For
用法
1.表示“当作、作为”.如:I like some bread and milkforbreakfast.我喜欢把面包和牛奶作为早餐.What will we haveforsupper?我们晚餐吃什么?
2.表示理由或原因,意为“因为、由于”.如:Thank you for helping me with my English.谢谢你帮我学习英语.Thank you for your last letter.谢谢你上次的来信.Thank you for teaching us so well.感谢你如此尽心地教我们.
3.表示动作的对象或接受者,意为“给……”、“对…… (而言)”.如:Let me pick it up for you.让我为你捡起来.Watching TV too much is bad for your health.看电视太多有害于你的健康.
4.表示时间、距离,意为“计、达”.如:I usually do the running for an hour in the morning.我早晨通常跑步一小时.We will stay there fortwo days.我们将在那里逗留两天.
5.表示去向、目的,意为“向、往、取、买”等.如:Let’s go for a walk.我们出去散步吧.I came here for my schoolbag.我来这儿取书包.I paid twenty yuan for the dictionary.我花了20元买这本词典.
6.表示所属关系或用途,意为“为、适于……的”.如:It’s time for school.到上学的时间了.Here is a letter for you.这儿有你的一封信.
7.表示“支持、赞成”.如:Are you for this plan or against it?你是支持还是反对这个计划?8.用于一些固定搭配中.如:Who are you waiting for?你在等谁?For example,Mr Green is a kind teacher.比如,格林先生是一位心地善良的老师.尽管for的用法较多,但记住常用的几个就可以了.
副词
做状语,所谓状语,就是修饰整个句子的,没有状语,整个句子还是完整的.
如果是简单的句子里,副词一般是修饰动词和形容词的.
修饰动词 I run fast.我跑得快.（fast就是副词,修饰run这个动作）
修饰形容词 It is really good.它确实很好.（really是副词,修饰good）（没有really,It is good这个句子仍然成立,完整.）
复杂的句子里,副词可做很多状语,时间状语,地点状语,条件状语.
