前缀dis-1.like---dislike2.order–disorder混乱、无序e.g.Theemergencyroomwasindisorder.3.honest–dishoneste.g.Wefoundhimtobedishonest.4.appear–disappear不见、消失、不复存在e.g.Thecardroveawayanddisappeared5.courage–discouragee.g.Itmaybedifficulttodoatfirst.Don'tletthisdiscourageyou补充：courage名词，“勇气、胆量、气魄”e.g.Theydonothavethecouragetoapologisefortheiractions.补充：encourage动词，“鼓励，鼓舞；支持；促进；鼓动”e.g.Whenthingsaren'tgoingwell,heencouragesme,tellingmenottogiveup.6.cover–discover发现；碰见；撞见；获得知识e.g.Inthe19thcentury,goldwasdiscoveredinCalifornia.补充：cover动词，“遮蔽、覆盖”名词，“覆盖物，（书的）封面”e.g.Thedeskwascoveredwithpapers.7.agree–disagree不同意；不一致；不适合；e.g.IrespectyoubutIdisagreewithyourdecision.补充：agreementagreeable令人愉快的，惬意的；有礼貌的；同意的，接受的；适合的，一致的e.g.Shewasagreeabletotheproject.disagreementdisagreeable8.advantage–disadvantageadvantagen.有利条件；益处；优越（性）；处于支配地位vt.有利于；有益于；促进；使处于有利地位vi.得益，获利e.g.Thegreatadvantageofhome-grownorangesistheirmagnificentflavour.disadvantagee.g.What'stheadvantageanddisadvantageofthetesting?补充其它dis-词汇：1.dismiss解散、开除2.discuss讨论3.disappoint动词，使失望；使破灭，使落空4.disappointment名词失望，扫兴；令人失望的行为（人）5.discomfort可以作动词用，“使…不舒服；使…不安；使苦恼；使不便”可以作名词用，“不舒适，不舒服；不安；不方便；苦恼”e.g.Stevehadsomediscomfort,butnorealpain.Newshoesoftencausealittlediscomfortatfirst.前缀in-加在形容词，名词，动词之前,correct正确的,合适的–incorrecte.g.Thecorrectanswerscanbefoundatthebottomofpage8.e.g.Peopleoftenhaveincorrectinformationaboutfood.e.g.Theoldpasswordisincorrect.Pleasetryagain.2.accurate–inaccurateaccurate意思是“精确的；正确无误的”e.g.Mykitchenscalesarenotaccurate.e.g.Thereportswerebasedoninaccurateinformation.3.visible–invisiblevisible意思是:看得见的；明显的，显然的；手头的，可得到的；可察觉到的.是个形容词.e.g.Themeadowsarehardlyvisiblefromthehouse.e.g.Thesunoftheinvisiblewillwarmyouallnight.无形的太阳会让你彻夜温暖。补充:vision,“视力，视觉;想像”e.g.JaneblockedCross'svisionandhecouldseenothing.补充:television4.ability-inabilityability意思是“能力，资格；能耐，才能”e.g.What'smartin'sability?inability意思是:无能，无力；无才能；无能为力e.g.Herinabilitytoconcentratecouldcauseanaccident.5.active–