think,或者 consider, 或者  find, 或者 make,或者  feel,+ it, + 形容词+ to do,

常用动词不定式作宾语的动词有：hope, 或者 refuse, 或者 learn, 或者 set out, 或者 choose,或者  decide,或者  agree, 或者 manage, 或者 pretend,或者  plan,

动身;出发;启程;开始;着手;安排;摆放;陈列;（清晰而有条理地）陈述，阐述，说明set out,

warn,或者 tell,或者  allow, 或者 help,或者  ask,或者  force,或者 +宾语+to do,  help,可用省去to,

老师让我擦黑板。The teacher told me to clean the blackboard,

我希望你能给我一些帮助。I expect you to give me some help,

五看

watch, see, look at, observe, notice,

三使

let, make, have,

二听

listen to, hear,

一感觉

feel,

不定式用在介词but, except, besides,后时,如果这些介词前有行为动词do,的各种形式,那么介词后的不定式不带to,相反则带to, ,

她只能哭。She could do nothing but cry,

我别无选择，只能去。I have no choice but to go,

除了睡觉，你还喜欢做什么。What do you like to do besides sleep,

注：在can't but, 或者can't help but,或者 can't choose but, （不得不，只能，只好）的结构后，不定式不带to,

我有话要说。I have something to say,

如果不定式中的动词是不及物动词,则不定式中要有介词,

我有很多工作要做。I have a lot of work to do,

他总是第一个来。He is always the first to come,

我们都有上大学的机会。We all have a chance to go to college,

我还带了个电源板在酒店房间中使用。I've also brought a power strip to use in our hotel room,

不定式所修饰的名词或代词是不定式动作的地点工具等，即使是及物动词，不定式后面仍须有相应的介词。

布朗一家有一套舒适的房子住。The Browns have a comfortable house to live in,

没什么好担心的。There is nothing to worry about,

请给我一把刀来切。Please give me a knife to cut with,

这里有一些纸供你写。Here is some paper for you to write on,

不定式所修饰的名词如果是time, place或way，不定式后面的介词习惯上要省去。        

他没钱没地方住。He had no money and no place to live,

something, anything, nothing, everything,等复合不定代词常用不定式做后置定语。

你有什么东西要寄吗？Do you have anything to send?,

不定式to send,的动作执行者是you,

你有什么要寄的东西吗？Do you have anything to be sent?,

不定式to be sent,的动作执行者是已被省略的me,或者someone else,

我来这里是来看你的。I came here to see you,

为了 ; 以便 ; 目的在于 ; 要想in order to,

so as to,

我们站起身来以便看得更清楚。We stood up in order to get a better view,

足够 去做;足以;足够 可以enough to,

我无法靠得很近去看清楚。I couldn't get close enough to see,

仅仅为了 ; 却 ; 结果却only to,

她知道只要打个电话，他就会高高兴兴地照办。She knew she had only to call and he would come running,

跑着来;跑过来，赶紧做某人喜欢的事，欣然顺从某人的要求come running,

说实话，我不同意你的看法。To tell the truth, I don't agree with you,

老实说to be frank,

to be honest,

to tell the truth,

 老实跟你讲，我可能犯了个错。To be frank with you,  I may have made a mistake,

不定式与疑问词who,或者which, 或者when, 或者how,或者 what,  等连用，在句中起名词作用，可充当主语、表语、宾语等。

他不知道说什么。(宾语) He didn't know what to say,

如何解决这个问题很重要。(主语)How to solve the problem is very important,

我的问题是什么时候开始。(表语)My question is when to start,

在与why,连用时，只用于why,或why not,开头的简短疑问句中，后面紧跟的动词不定式不带to,。

为什么不休息一下呢？ Why not have a rest?,

had better,或者had best, + do something,  最好做某事

had better,或者had best, + not do something,  最好不做某事

更喜欢;宁愿做;宁愿prefer to do,

prefer doing,

宁愿做而不愿做  prefer to do rather than to do,

宁愿不做某事。would rather not do something,

宁愿做某事。would rather do something,

 宁愿做而不愿做would rather do than do,

孩子们宁愿玩也不愿学习。Kids would rather play than study,

 他非常崇尚自由，不自由，毋宁死。He himself believed in freedom, so much so that he would rather die than live without it,

到这种程度以致; 甚至so much so that

would rather somebody, +一般过去式, 虚拟语气 宁愿有人这么做

我们宁肯你没有看到。we would rather you didn't see it,

 我们宁愿你们已经过上了好日子。He would rather you had led a happy life,

他们假装没看见我们。They pretended not to see us,

他假装在睡觉。He pretended to be sleeping,

她假装以前就知道了。She pretended to have known it before,

我们很高兴能与您合作。We're happy to have been working with you,

完成进行式表示谓语动作发生之前,不定式的动作一直在进行而且可能之后也继续

查阅,参考;提到，谈及refer to,

 (使)加速speed up,

成功，奏效，达到目的，还清;偿清（债务）;用钱打发;pay off,

反复试验through trial and error,

偶然,意外地by accident,

很成功；引人注目，有强烈影响with a bang,

使某人失望let somebody down,

关于，至于as to,

 想当然地认为，认为 是理所当然take it for granted,

提出,提议,建议put forward,

 对真理的渴望a desire for truth,

学校科学节the school Science Festival,

制作纪实文案make a fact file,

有影响，有作用make a difference,

时间简史A Brief History of Time,

 救命药a life-saving medicine,

与  作斗争，反对  fight against,

在人类历史上in human history,

幸亏，由于thanks to,

生存的机会大大增加a greatly increased chance of survival,

毕业之后after graduation,

中国中医药研究院the Academy of Traditional Chinese Medicine,

博学，获得广博的知识acquire a broad knowledge,

在20世纪60年代in the nineteen sixties,

死于die of,

  的疗法a cure for,

产生有希望的结果produce any promising results,

 在低温下at a low temperature,

日夜工作work day and night,

对病人的试验the trials on patients,

有足够的安全数据have sufficient safety data,

志愿做某事volunteer to do something,

  关键的部分a key part of,

凭借;利用;动用;（时光）渐渐过去draw on,

对  有好处be beneficial to,

 获得诺贝尔奖win a Nobel Prize,

在某人看来in one's opinion,

 未来发展潜力巨大great potential for future advances,

潜在的 ; 可能的 ; 可能性 ; 潜在性 ; 潜力 ; 潜质 potential

有强效的;强有力的;有力的;强大的;烈性的;影响身心的potent

好好利用make good use of,

进行研究conduct research,

存活率the survival rate,

解释一个术语explain a term,

一个改变世界的发现a world-changing discovery ,

来自不太可能的来源come from unlikely sources,

被认为是be considered to be,

进行一些测试perform some tests,

治疗伤口treat wounds,

引起 的注意catch the attention of,

大量生产；成批生产mass production,

绝非真实far from the truth,

开始某事get something started,

 获奖win an award,

想出，得到；解出；发生，进展，圆满结束；锻炼work out,

丝带a silk ribbon,

带子 ; 丝带 ; 带状物 ; 狭长的东西 ; 绶带 ; 勋带，装上丝带；加上带状条纹；把…撕成长带；形成带状 ribbon,

在一个暴风雨天on a stormy day,

致命的电击a deadly electric shock,

大陆漂移理论theory of continental drift,

南美洲东部海岸线the eastern coastline of South America,

组合在一起fit together,

提出，推荐put forward,

动力，驱动力，推动力the driving force,

 上来；走近；被提及，被讨论；即将发生，即将到来，突然发生；上市；升起；开庭审理come up,

对 感兴趣take an interest in,

培养技能develop skills,

参加讨论会take part in the workshop,

上交hand in,

著名的科学家a well-known scientist,

记笔记take notes,

尽可能简洁as brief as possible,

 进行，进展；离开；对 不再喜欢，失去对 的兴趣；爆炸，开火；停止运转，（灯）灭了；变质，坏掉go off,

非常有趣amazing fun,

在周四的科学研讨会上In Thursday's Science Workshop,

怀着极大的兴趣with great interest,

尝一尝，体味，领略get a taste of,

 在北京的中央公园咖啡馆，你可以领略美国风情。At the Central Perk coffee shop in Beijing, you can get a taste of the United States,

总有一天，你会领略其滋味的。You will get a taste of it one of these days,

生活在外层空间live in outer space,

科学博览会The Science Fair,

看起来像空间站look like a space station,

巨大的成功a huge success,

由于，因为due to,

 举办科学节hold a Science Festival,

做  的讲座give a lecture on,

平稳地移动，进展顺利move smoothly,

研究原子弹work on the atomic bomb,

置前途于危险之中put one's future at risk,

卷入，涉及，参与be involved in,

换句话说put another way,

致力于devote oneself to,

科学的功劳，归功于科学to the credit of science,

带领某人做好工作lead somebody to good work,

促进力量an enabling power,

做好事或坏事do either good or bad,

 智力享受intellectual enjoyment,

一次又一次again and again,

（使）翻转，翻身；细想；移交，交托turn over,

不可思议的怪事unimagined strangeness,

引向，引起，导致lead on to,

转向；翻到；求助于turn to,

有点怀疑in some doubt,

在与权威的激烈斗争中out of a deep and strong struggle against authority,

在科学的早期in the early days of science,

给怀疑留出空间leave room for doubt,

允许某人做某事permit somebody to do something,

思想自由的果实the fruit of freedom of thought,

 在不同领域in different fields,

个人信息personal information,

科学研究scientific research,

已出版作品published works,

自然选择进化论the theory of evolution by natural selection,

论物种起源On the Origin of Species,

下决心make up one's mind,

 诺贝尔生理学或医学奖the Nobel Prize in Physiology or Medicine,

授奖给某人be awarded to somebody,