八年级下英语第3单元单词解析

单词讲解,sweep,1.swept;swept2sweepthefloor;sweepaway扫走3.Isweeptheflooreveryday.Pleasecleantheroom.,mess,Theroomwasinamess.=Therewasamessintheroom.2.Youcanmakethecakesinthekitchen,butyoucannotmakeamess.3.Youmessedupmylife.,throw,1threw;thrown2throwabout乱扔throwat扔向throwsthtosb/throwsbsth将某物扔给某人,neither,作形容词或代词，意为“两者都不的”Neitheransweriscorrect.Neitherof+复数名词/代词两者都不Neitherofthestudentsisintheclassroom.Neithernor两者都不（就近原则）Neitheryounorhegoestothepark.Neither+be动词/情态动词/助动词+主语也不Hedoesnotlikeapples.Neitherdoeshe.Theycannotswim.NeithercanI/Meneither,Sheisnotworking.Neitherishe.Icantswim.NeithercanI.=Meneither.Theydidntdohomework.NeitherdidI.Hehasnotdonehishomework.NeitherhaveINeitherhasshe.have/has+过去分词,pass,1为动词，“经过”过去式passedShepassedmeinthestreet.她在街上从我身旁经过。注：past也表”经过“，但是为介词2passsbsth/passsthtosb把某物传给某人3passon传递,when和while的用法区别,when引导的时间状语从句中的动词可以是非延续性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。判断对错Shewascryingwhenhermotherarrivedhome.Shewascryingwhilehermotherarrivedhome.,由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，while也可表转折,Whileweweretalking,theteachercamein.Theyweresingingwhileweweredancing.Iamuglywhilesheispretty.,改错1.SheisfatbutIamthin.2.Itwasrainingwhilewearrived.3.Idontknowthemwell，whiletheyaremyneighbors.,waste,1.Itsawastetothrowawayallthisfood.把这些食物都扔了是浪费。2.Weshouldntwasteadropofwateroragrainofrice.我们不应该浪费一滴水一粒米。,provide,providesbwithsth为某人提供某物providesthforsb为某人提供某物provideforsth为某事做好准备provideforsb赡养某人providethat+从句规定；预先约定,anyway,而且；加之IdontwanttoseethefilmandanywayIhaventgotanymoney.我不想看那部电影，再说我也没钱。,depend,1.dependon/upon视而定；决定于Hedependsonyoutohelphim.他指望你帮他.2.It(all)depends那得看情况，可单独使用，或位于句首Italldependsonhowyoudoit.Itdependswhereyoulive.3.dependent依赖的independent独立的,since,1.因为，既然Sincehesaysso,itmustbetrue.既然他这么说，那就一定是真的。Sinceyoulikecomputer,Iwillgiveittoyou.2.since自以来+完成时Itis+一段时间+since+一般过去时IhavebeentoBeijingtwice.Itistenyearssincewemethimlasttime.,neighbor,可数名词，neighborsNeighborhood附近，邻近一带；街坊，四邻Hemovedintotheneighborhoodrecently.他最近搬到了这一带。.,drop,1dropin顺便来访2dropout退学3名词：滴；水珠adropofwater4drop:可做及物动词，也可做不及物动词Thetemperaturedropsbelowzeroatnight.夜里温度降到零度以下。fall:只作不及物动词侧重地心引力或没有握住等原因掉下侧重于重力作用或失去平衡而摔倒Itsfairtosaythat说句公道话fair-unfair,Couldyouplease+动词原形?Couldyoupleasetellmethewaytothebusstop?Couldyoupleasenotstandhere?dishwashthedishes=dothedishesadishoffish一盘鱼（指菜，菜肴，食物）Whatisyourfavoritedish?你最喜欢吃的菜是什么？,getaride搭车givesbaride让某人搭便车Healwaysgivesmearidetotheschool.他常让我搭便车去学校。workon.创作,画，做，写从事某项工作用于进行时和完成时Heisworkingonanewbook.他在写一本新书。workat学习，研究，写作，致力于从事工作的性质Hehasworkedatthissubjectformanyyears.,beangrywithsb生某人的气Hewasangrywithhisstudentsfornotfinishingthehomework.for:说明生气的原因beangryatsth因而恼怒/生气Iwasveryangryatwhathesaid.3.beangryabout=beangryat,1toonessurprise:令人惊奇的是=主语+besurprisedTohersurpriseshefoundmoneyonthefloor.=Shewassurprisedtofindsomemoneyon.insurprise惊奇地，用来修饰动词Theylookedateachotherinsurprise.besurprisedatWearevery/toosurprisedatthenews.,assoonas一就asaspossible=asassbcan/couldYouhavetofinishtheworkassoonaspossible.=Youhavetofinishtheworkassoonasyoucan.2dochores=dothehouseworkIdontlikedoingchores.,1cloth:衣服所用的“布料”；衣料clothing:服装的总称，泛指服装或特指某类衣服范围比clothes广clothes:常用作复数形式；统指衣服dress:不可数名词，统指外面的衣服；可数名词，连衣裙2.invitesbto邀请某人invitesbtodosth邀请某人做某事,1makesbdosth=let/havesbdosth让某人做某事sbbemadetodosth某人被迫做某事2Nevermind=Itdoesntmatter没关系changeonesmind改变主意makeonesmindtodosth下定决心setonesmindtodosth专注于keepinmind记在心里comeintoonesmind计上心来，浮现在脑海里,1asresult结果，因此asaresultof由于的原因2accor