小学英语知识点汇总一.学生易错词汇1.a,an的用法:元音开头的单词用an，辅音字母开头的单词用a。例如：abook,anoldbook,anewbook，anapple,abigapple,auniversitystudent(注：university是以元音字母开头，但发辅音)2.am,is,are的用法:I用am,you用are，第三人称单数用is,复数人称用are。be动词用法口诀：我用am，你用are,单数is，复数are。Iam,Youare,Heis,Sheis,Itis,Weare,Theyare3.have,has的用法：第三人称单数用has,除第三人称单数以外用have。Ihave，Youhave,Hehas,Shehas,Ithas,Wehave,Theyhavehave/has的用法口诀：have,has表示“有”，位置就在主语后。“三单”主语用has，其他人称用have。4.thereis,thereare的用法:表示某地有某物，某人。thereis+单数或不可数名词,thereare+复数Thereisabookonthedesk.Thereissomewaterinthecup.Therearesometreesneartheriver.5.some,any的用法:some用于肯定句或表示委婉语气的疑问句,any用于疑问句和否定句Ihavesomebooks.Wouldyoulikesometea?CanIhavesometea?Doyouseeanymonkeys?Therearen’tanyducksintheriver.6.can,can’t,let’s,don’t,should，will后面一定要用动词原形Shecansingasong.Let’splayfootball.Don’tbelate!Youshouldwatertheplanteveryday.Shewillgotothezootomorrow.二、名词复数的变化规则1.一般情况下,直接在词尾加-s,如:girl-girls,book-books,pen-pens2.以s,x,sh,ch结尾的词,在词后加-es,如:class-classes,bus-buses,glass—glasses,class-classes,dress–dresses,box-boxeswatch-watches,dish–dishes3.以辅音字母+y结尾的,变y为i再加-es,如:city-cities,country-countries，butterfly-butterflies,library–libraries,baby-babies,strawberry-strawberries,company-companies,factory-factorieshobby-hobbies4.以f或fe结尾的,变f或fe为v再加-es,如:knife-knives,leaf-leaves,shelf-shelves5.以o结尾的加-es或-s,如:tomato-tomatoes,potato-potatoes,mango-mangoes,zoo-zoos,photo-photos,piano-pianos,radio-radios6.特殊变法：man-men,woman-women,policeman-policemen,policewoman-policewomen,snowman-snowmen,foot-feet,tooth-teeth,goose-geese,child-children,sheep—sheep,people-people,fish-1fishmouse-mice,deer-deer,Chinese-Chinese三、形容词的比较级1.一般情况下,直接在词尾加-er，如:small-smaller,short-shortertall--taller,strong-stronger,old–older,young-younger,long-longer2.以辅音字母+y结尾的,变y为i再加-er,如:heavy-heavier，funny-funnier,happy-happier,early-earlier3.以重读闭音节,一个辅音字母结尾的,双写该字母,再加-er如:big-bigger,thin-thinner,fat-fatter4.以e结尾加r,如：nice-nicer,late-later5.多音节词在原级前加more:beautiful—morebeautiful5.特殊变法：good—better比较等级变化规律口诀：比较级要变化，一般词尾加-er。词尾若有哑音e，直接加r就可以。如遇重读闭音节，单个辅音字母要双写。辅音字母加y，字母y摇身改为i。形容词若是多音节，只把more来前面加。四、反义词1.black-white2.new–old3.old-young4.short-long5.big–small6.tall-short7.yes–no8.open-close9.hot-cold10.here-there11.thin-fat12.right-wrong13.left-right14.go-come15.good-bad16.cool-warm17.win-lose18.late-early19.up-down20.hungry-full21.different-same22.first-last23.heavy–light24.sit-stand25.behind-infrontof26.cheap-expensive27.over-under28.happy-sad29.far-near30.always-never31.north-south32.west-east33.weak-strong34.before-after五．基数词和序数词一、二、三变字体，one—first,two-second,three-thirdth从四上起，four-fourthsix-sixthseven-seventh八加h,九减e,eight-eighth,nine-ninthf来把ve替，five-fifth,twelve-twelfthty变成tie,twenty-twentieth,thirty-thirtieth若是遇到几十几，十是基来个是序,twenty-one---twenty-first六．代词人称代词物主代词主格宾格形容词性名词性I我me我my我的mine我的you你，你们you你，你们your你的，你们...
