意思：1.prep.（介词）2.向，往，给...，于...，直到...为止，在...之前，比，对，[表示程度、范围] 到，达3.情态动词后不加to直接加v.（原）4.行为动词加to do sth.（如：need)5.(表示时间)到, 直到, 在…到来之前, 离…； 例：from seven to ten6.(表示方向)朝, 往, 通向7.(表示状态)紧贴着, 紧靠着, 对着；8.(表示对象)对, 对于, 对…来说；9.(表示比较)比, 相对于；10.(表示方位)在…方向[方位], 处于…顺序；11.(表示距离)离, 距离；12.(表示目标)到达, 直到；13.(表示结果)转换为, 转变为, 趋于用法：To1.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。
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