所谓非谓语动词，是指不能作谓语的动词，也不受主语人称和数的限制，但具有动词的某些特征，不仅可以接宾语，而且还有时态和语态的变化。此外它可以做主语、表语、宾语、宾补、定语、状语和同位语。非谓语动词不仅是语法学习的重点和难点，也是GCT必考的语法知识。其具体表现形式有三种：1. 动词不定式 to V . 2. 动名词 V-ing. 3. 过去分词 V-ed 。 三者的核心含义和区别如下： 动词不定式 to V 一般用来表示目的或结果，或者某个具体的动作。 动名词 V-ing 一般用来表示动作的主动概念和进行意义。 过去分词 V-ed 一般用来表示动作的被动概念和完成意义。
（一）关于动词不定式的考点
考点一：直接接动词不定式做宾语的动词 这一类动词往往表示请求、要求、选择、决定、打算、企图等 afford, agree, aak, attempt, beg, begin, bother, care, choose, claim, consent, decide, demand, desire, endeavor, expect, fail, fear, hate, help, hesitate, hinder, intend, learn, manage, neglect, offer, plan, pledge, prefer, prepare, pretend, refuse, resolve, start, threaten, undertake, venture, volunteer, want He pledged never to come back until he had made great success. I hesitate to spend so much money on clothes. 我对花那么多钱买衣服犹豫不决。
考点二：在下列情况下常用不带（或省略）to的动词不定式： 1. 感官动词后面：feel, listen, hear, look at, notice, see, watch, observe, perceive I saw a man enter the shop. 2. 表示使役意义的动词，如：have, let, make The teacher has us write a composition every week. 3. 一些情态动词后面：had better, would rather…than…，would sooner…than…，rather than, may well do，may as well do (还是…好了)，can not but…，can not help but… Rather than wait anyone, I decided to go home by taxi. We might as well put up here for tonight. 4. 在do (did, does, done) nothing (anything, everything )but (except) do 句型中 I can do nothing but follow your advice. 如果but或except之前没有do，其后的to 不能省略。 There is no choice but to wait and see. 5. 由 all, what 引导的主语从句或者主语被only, first, one, least 或形容词最高级修饰时，而且从句中含有do时，其表语如果是动词不定式，则往往省去to。 What I have to do is take a rest. The only thing I could do was do it myself. 6. 由并列连词and，except, but, than, or 连接两个以上的具有相同意义或功能的不定式时，第二个动词不定式不带to。 I’d like to stay with you, help you and learn from you. She told us to stay at home and wait till she came back. To try and fail is better than not to try at all. 尝试而失败也比不尝试好。 注意：如果两个不定式表示对照或对比，则不能省略to。 He hasn’t decided weather to quit or to stay. 他还没有决定是去还是留。 To be or not to be, that is a question. 是生存还是死亡，这是一个问题。