动名词的复合结构：凡是一个动词的后面可以加动名词，就可以加动名词的复合结构。
动作发出者 + 动名词;当动作发出者名字给出时：名词所有格 + 动名词;当动名词的复合结构在文章中出现，且动作发出者在前文中提过时：形容词物主代词（宾格）+ 动名词。
形容词物主代词：his， her， my， your， their， our.代词宾格：him， her， me， you， us， them.
第二点：want 想要; want to do sth. 想做某事; want doing 客观需要或缺乏。
48. your hair wants _b_. you'd better have it done tomorrow.
a cut b cutting c to cut d being cut
注意：want doing 中doing表示的是被动含义。
18. this room is so dirty that it wants _a_.
a cleaning b to clean c being cleaned d cleaned
第三点：mean 意味; mean to do sth. 打算做某事，意欲… ;mean doing 意味着，…的意思是…
25. there's a man at the reception desk who seems very angry and i think he means _b_ trouble. [reception desk 接待台]
a making b to make c to have made d having made
55. the children went there to watch the iron tower _d_. a to erect b be erected c erecting d being erected
watch 看电视用，看比赛用; see 看电影用;
感官动词watch， see， hear; 感官动词 + 名词（代词）+ do
be erected 强调的是动作的结果; being erected 强调的是动作的过程。
56. the engine _d_ smoke and steam.
a gives up b gives in c gives away d gives off
give up 放弃; give in 屈服，让步; give off 释放，放出（烟和气体）;
give away 泄露，走漏风声;婚礼中新郎的父亲把新娘的手交给新郎的过程;赠送礼品。
57. the manager promised to keep me _c_ of how our business was going on.
a to be informed b on informing c informed d informing
keep sb. + 分词; inform v. 通知，告知; inform sb. of sth. 通知某人某件事情
keep me informed 使我被告知。
60. the goals _b_ he had fought all his life no longer seemed important to him.
a after which b for which c with which d at which
fight with sb. （注意要看整个句子）; fight with + 工具 用该工具来打仗。 fight for 为…而战。
i fight with him. 我和他打起来了。 i fight with him against her. 我和他并肩对付她。