break away from break down break out break inbreak upbring about bring back bring outbring upcall forcall oncall offcall atcarry oncarry out come across come up with come oncome outcut incut upcut downcut offdie outdie downdie of/fromget intoget onget offget overget along with get aboutget through give ingive upgive outgive awaygive offgo in/outgo againstgo throughgo overgo ongo offkeep away fromkeep up withkeep backkeep offlook afterlook outlook up tolook down uponlook throughlook uplook forward tolook intopick upcheer uphurry upclean upeat upstay upwake upfix updress upgrow upmix upend uprun out (of)try outwork outclear outfind outhang outhelp outtake care oftake ontake offtake uptake aftertake overtake intake downmake upmake outbe made ofbe made fromput onput awayput offput upput outset upset asideset outset offturn upturn downturn onturn offturn inturn intoturn outbreak away from 脱离break down 故障break out 爆发break in 破门而入break up 分手bring about 引起bring back 使想起bring out 使显现出bring up 养育大call for 需要call on 号召call off 取消call at 拜访carry on 继续carry out 执行come across 偶然遇见come up with想出come on加油，快点儿come out出版cut in 插嘴cut up 切碎cut down 砍倒cut out 删除die out 灭绝die down 渐渐消失die of/from 死于get into 陷入get on 上（车）get off 下（车）get over 克服get along with 相处get about 四处走动get through 穿过give in 屈服投降give up 放弃give out 分发give away 赠送give off 释放go in/out 进/出go against 违背go through 经历go over 复习go on 继续go off 闹钟响keep away from 远离keep up with 跟上keep back 隐瞒keep off 避开look after 照顾look out 当心look up to 仰慕look down upon 蔑视look through 快速浏览look up 查阅look forward to 期盼look into 调查pick up 捡起，接（电话/人）cheer up 使高兴hurry up 快点儿clean up 清洁干净eat up 吃光stay up 熬夜wake up 叫醒fix up 修理dress up 装扮grow up 长大mix up 混合end up 结束run out (of) 用尽try out 实验work out 计算出clear out 清除find out 查明hang out 闲逛help out 帮助解决问题take care of 照顾take on 雇佣take off 脱掉，起飞take up 开始做，占据take after 长得像take over 接管take in 吸入，欺骗take down取下，拆下make up编造，组成make out 辨认出be made of 由...制成（见材）be made from 由...制成put on 增重，穿上put away 收拾好put off 推迟put up 挂起，张贴put out 熄灭set up 建立set aside 存留set out 出发to doset off 出发doingturn up 出现，开大声turn down拒绝，关小声turn on 打开turn off 关闭turn in 上交turn into 变成turn out 结果是，证明是动词不定式用法动词不定式没有人称和数的变化，在句中不能独立作谓语。
但动词不定式具有名词、形容词和副词特征，在句中可以作主语、宾语、宾语补足语、定语、表语和状语等多种成分。
另外，动词不定式具有动词特点，可以有自己的宾语和状语，组成动词不定式短语。
动词不定式的肯定形式是to＋do；其否定形式是not to＋do。
下面以动词不定式在句中的作用来予以详细说明。
1．作主语可以直接作主语。
如：To see is to believe．但在英语中，常用it作形式主语，真正的主语即动词不定式放在后面。
如：It's wrong to play tricks on other people．It's our duty to keep our environment clean and tidy．点击规律：动词不定式在句中作主语时，常放在It is ＋adj +(for sb.)＋(not)to do sth句型中，表示说话人对客观事件的决断，意为：做…..是……的，it仅作形式主语，真正的主语是to do sthIt is very interesting to read.读书是有趣的It is useful to read.看书是有用的It is healthy to run every day.每天跑步是健康的It is a little difficulty for meto work out this question.解出这道题对我来说有点难It is bad not to finishhomework.不完成作业是糟糕的It is bad to be late for school.迟到是糟糕的It is+adj+of sb +(not)to dosth该句型通常表示说话人对客观事件的惊讶、兴奋、懊悔、难过等感叹情绪，与It is ＋adj+(for sb.)＋(not)to do sth的意义不同。
It is very kind of you to tellme the truth．你能告诉我事实，真是太好了It is stupid of him to do sucha silly thing．他做那件傻事，真是太笨了It is very clever of you towork out this question. 你能解出这道题目，真是太聪明了It is very wise of you to readthis novel. 你看这本小说，真是太明智了这个句型中用介词of而不是for的原因是这里的形容词是用来形容人的品质性格的。
类似的词有：careless，careful，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid，friendly因此区分是用It is ＋adj +(forsb.)＋(not)to do sth还是It is+adj+ofsb +(not)to do。