文档介绍：常考词汇(一)
    1)用于宾语从句,从句谓语用should + 动词原形或只用动词原形。
这类动词有 order, demand, require, request requested (被请求的), direct, instruct (教导,命令), command (命令,指挥), urge (催促,促进), rule, suggest suggested (暗示的), advise (劝告,警告), vote (选举,表决), propose (提议,建议),proposed (被提议的), move, mend (劝告,介绍), prefer, decide decided, insist (坚持,强烈要求), desire (愿望,欲望,要求),desired (渴望的,想得到的).
    2)用于主语从句,从句谓语用should + 动词原形或只用动词原形。
这类动词有: vital (重要的,致命的), important, essential (必不可少的,必要的), necessary (必定,当然),unnecessary (不必要的,多余的), impossible (不可能的,做不到的), sad, strange (奇怪的,陌生的), fitting (适应,配合), proper (适当的,特有的), appropriate (适合的,恰当的), settled (固定的).
    2. 不定式
    1)      通常只接动词不定式作宾主的常考动词:
agree, attempt (试图,努力), claim (主张,断言), decide, demand (要求,需要), ask, beg (乞讨,请求), fail (失败,忘记), care, consent (同意,答应), promise (答应,有希望), desire, hope, intend (想要,打算,企图), learn, offer (提供,提议), plan (设计), refuse, pretend (假装), require, appear (好像是,仿佛), arrange, expect, manage, tend (倾向,照料), afford (供给,担负得起), wish, want, seem (好像,仿佛), struggle (斗争), threaten (威胁), wait, undertake (接受,承担), venture (冒险,敢于), seek (寻找,试图), resolve (决议,解决), aim (志在,瞄准), apply (申请,运用), profess. (表示), happen, guarantee (保证),neglect (疏忽,忽略), prove (证明,结果), trouble (打扰,费神), bother (打扰,麻烦), care (关心,喜欢), choose (选择,甘愿), etc.
    2)      用于动词+宾语+不定式结构的常考动词:
force (强迫,迫使), hire (雇佣,租借), tell, require, teach (教书,教训), warn (警告), allow, ask, inform(通知,告发) beg, convince (使信服,使确信), expect, invite (邀请,招待), order, permit (允许,许可), promise (允许,答应), instruct (指示,命令), prepare (准备,预备), urge (鼓励,促进), remind (提醒), want, advise (忠告,通知), persuade (说服,使相信), cause (引起), dare (敢,胆敢), forbid (禁止), like, challenge (挑战), request, get, need, oblige (迫使,使感激), encourage (鼓励,促进), enable (使能够), compel (强迫,逼迫), mend (劝告,推荐), declare (宣布,表明), prove (证明,鉴定), command (命令,指挥), lead (引导,带领), press (压,挤), etc.
    3)      用于be+形容词+不定式结构的常考动词:
anxious (担心的,渴望的), dangerous (危险的,不安全的), pleased (高兴的,满足的), hard , eager (热心的,渴望的), easy, fortunate (幸运地,侥幸的), strange (奇怪的,陌生