动名词
①forget to do sth. 忘记要去做某事(此事未做)
forget doing sth. 忘记做过某事(此事已做过或已发生) remember to do sth. 记得去做某事(未做) remember doing sth. 记得做过某事(已做)
②stop to do 停止(某件事)，目的是去做另一件事 stop doing 停止正在或经常做的事 go on to do 继续(去做另外一件事情) go on doing 继续(原先没有做完的事情)
③regret to do sth. 对要做的事感到遗憾(遗憾地要去做某事)
regret doing sth. 对过去做过的事或未做过的事感到后悔(后悔做过或未做过某事)
④try to do 努力、企图做
try doing 试验、试一试某种办法 ⑤mean to do (人)打算，有意要…… mean doing (物)意味着
⑥can't help (to) do sth. 不能帮助做某事 can't help doing sth. 情不自禁做某事
用所给词的适当形式填空：
①Don't you remember ________(see) the man before?
②I regret ________(inform) you that the meeting has been cancelled. ③Let's try ________(do) the work some other way. ④I didn't mean ________(hurt) your feeling.
⑤I'm so busy that I can't help ________(clean) the house with you.
⑥After we finished our homework，we went on ________(review) the new lesson. 【答案】①seeing ②to inform ③doing ④to hurt ⑤(to) clean ⑥to review
4 不定式、动名词和分词作表语的
区别
①不定式作表语，一般表示具体动作，特别是表示将来的动作。 动名词作表语，表示抽象的一般性的行为。
②如果主语是以aim，duty，hope，idea，happiness，job，plan，problem，purpose，thing，wish等为中心的名词，或以what引导的名词性从句，不定式作表语是对主语起补充说明作用。
③过去分词作表语，表示“感到，觉得”，现在分词作表语，表示“令人……”。此类词有：embarrass，excite，interest，delight，disappoint，encourage，inspire，please，puzzle，satisfy，surprise，worry，convince等。
用所给词的适当形式填空：
①His wish is ________(go) abroad.
②His hobby is________(collect) stamps.
③The most important thing is ________(negotiate) with them about the future of the plant.
④What he should do is ________(work) hard.
⑤He felt ________(embarrass)．
【答案】①to go ②collecting ③to negotiate ④work ⑤embarrassed
5 分词、不定式作宾语补足语的区
别
①下面的动词要求用不定式作宾补(动词＋宾语＋动词不定式)：
ask(请，叫)，tell(告诉)，get(使，让)，prefer(喜欢，宁愿)，like(喜欢)，force(强迫)，press(迫使)，require(要求)，request(请求)，advise(劝告)，pray(请求)，remind(提醒)，beg(请求)，invite(吸引，邀请)，command(命令)，order(命令)，intend(想要，企图)，drive(驱赶)，train(训练)，cause(引起)，instruct(指示)，direct(指导)，warn(告诫)，enable(使能够)，need(需要)，urge(激励，力说)，inspire(鼓舞)，encourage(鼓励)，want(想要)，lead(引起，使得)，teach(教)，wish(希望)。
②感官动词，如：see，watch，observe，notice，look at，hear，listen to，feel等。感官动词后可接不带to的不定式、现在分词、过去分词作宾语补足语。
使役动词have，make的用法(注意have作为“有”的用法)：使役动词have可接不带to的不定式、现在分词、过去分词作宾语补足语；make后接不带to的不定式、过去分词、名词、形容词作宾语补足语。
③catch，find，get，leave，keep，set，send后接非谓语动词作宾语补足语。
用所给词的适当形式填空：
①I often hear him ________(sing) the song. I often hear the song________(sing)．
I heard him ________(sing) the song when I passed by. I heard the song ________(sing) when I passed by.
②I'm leaving for Beijing tomorrow. Do you have anything ________(take) to your son?
I won't have you ________(talk) to him like that! I had him ________(repair) my bike. I had my bike ________(repair)．
You shouldn't have the light ________(burn) all the night. ③His letter left me ________(feel) pretty bad. He left the work________(unfinish)．
You can leave him ________(finish) the work. What she said set me ________(think)． The push sent him ________(fall) down.
【答案】①sing；sung；singing；being sung ②to be taken；talking；repair；repaired；burning ③feeling；unfinished；to finish；thinking；falling