那你就是在问非谓语动词用法了非谓语动词有三种:不定式(to+infinitive),动名词,和分词而你所问的区别是指不定式与动名词之间的区别。这二者都可以做句子主语，宾语，表语，定语。1.不定式不定式可以带宾语或状语构成不定式短语，没有人称＆数的变化，但有时态＆语态的变化，不定式还可以做主语，宾语，状语，表语，定语，但不能单独做谓语。不定式用法A.做主语不定式短语做主语时，往往放在谓语之后，用it做形式主语，例如：it is right to give up smoking.(up是介词，后面要跟名词性成分，所以smoke用了verb+ing形式)B.不定式短语做宾语时，如果带有宾语补足语，往往把不定式宾语放在宾语补足语的后面，而用it做形式宾语。例如：he offered to help us.I find it interesting to study English.注意记忆以下动词，他们后面只跟不定式作宾语want，wish，hope，manage，de- mand，promise，refuse，pretend，plan， offer，decide，agree，expect等。 C.做宾语补足语在feel, hear,listen to, look at,observe,see, watch,have,let,make,等词后面的补足语中，不定式不带to。但如句子为被动结构必须带toD.做定语例如：The farmers thought of ways to protect their crops.The next man to come is Gorge.注意：作定语的如果是不及物动词，不定式后面续有相应的介词。例如：He is looking for a room to live in.E.做状语，表目的，原因，结果或条件。例如：During the next ten years they both worked day and night to pay for the debts.注意：某些形容词在too...to结构中没有否定的含义，而是表示肯定，这类形容词有anxious,delighted,eager,easy,glad,kind,pleased,ready,surprised,willing等，例如：She was too surprised to see how angry her father was.看到父亲这么生气，她非常惊讶。F.做表语
例如：My job is to help the patient.G.做独立成分例如：To tell you the truth,I don't agree with you.这类常用的短语还有to be frank, to be exact,to begin with, to make a long story short等等另外不定式与疑问词who,which,when,where, how, what等连用，在句中起名词作用，可充当主语，表语，宾语等。例如how to solve the problem is very important.（主语）My question is when to start.(表语)He didn't know what to say(宾语)..................................................to be continued2.动名词动名词由动词＋ing构成，具有动词＆名词的性质，在句中起名词作用，可以做主语，宾语，表语，定语。A.作主语这里主要说下它跟不定式作主语的区别，动名词作主语表示一般或者抽象的多次性行为，不定式作主语往往表示具体的或一次性的动作。例如：Playing with fire is dangerous(泛指玩火)To play with fire will be dangerous(指一具体动作)注意：在It is no use/good,not any use/good,useless等后一般用动名词。B.作表语例如：My job is teaching English.与不定式作表语的区别：动名词作表语时表示比较抽象的一般行为、习惯，而不定式作表语时表示具体的动作，特别是表示将来的动作或行为。例如：My favourite sport is swimming.The first thing for us to do is to improve our pronunciation.C.作宾语这里有一些词需要记忆，这些动词后面必须用动名词，不能用不定式，通常也是考试的重要考点。admit,appreciate,avoid,consider,delay,dislike,enjoy(这就是为什么它后面要跟verb＋ing形式)，escape,excuse,feel,like,finish,forgive,give up,imagine,include,keep,mention,mind,miss,practise,put off,resist,suggest,can't help,can't stand.另外在一些动词后面跟不定式，跟动名词意义上有区别。这些动词有forget,go on, like, mean,regret,remember,stop,try.这个前面Mr.kikigirlaaa已经介绍的很详细了。这里不再赘述。在allow，advise,forbid,permit等动词后直接跟动词作宾语时，要用动名词形式，如果后面有名词或代词作表语，然后再跟动词作宾语补足语时，其宾语补足语用带to的不定式。例如：We don't allow smoking here.We don't allow students to smoke here.下面一些短语需要记忆，因为他们后面的to是介词，而非不定式符号，也就是说他们后面需要跟名词性成分（当然可以跟动名词）in addition to......admit to....devote oneself tobe equal to......be familiar to......find one's way toget down to......give way to......give one's mind tokeep to......be open to......loop up tolead to......look forward to......object tobe opposed to......pay attention to......point tobe reduced to......give rise to......stick tostand up to......be sentenced to......see tosay yes/no to......be used to......trust toturn to就讲这么多吧，太多，我都会晕。明天考试顺利！
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