新人教版七年级英语上册二,三单元课本重难点知识解析和归纳

1.That‟smyfamily.Thosearemyparents.（用法）指示代词that的复数形式是those,表示人和事物。this的复数形式是these.表示“这些”。these和this“那些”。those和that指离说话人较远的指离说话人较近的人或事物。These和those做主语或其修饰的名词作主语时，be动词用are.Look!Thesearemykids.ThosepensareLily‟s.Thesebooksareveryinteresting.Butthoseonesarenot.Ilikethisverymuch.拓展指示代词，形容词性物主代词，冠词这三类词中不能由任何两种词同时修饰某一名词。例如：myabike,thehisbook,theseherpencils等都是错误的表达形式。parents是parent的复数。名词变复数规则变化1）一般情况下加-s如book--books（书）desk--desks（书桌）2）以s,x,ch,sh结尾加-es如box--boxes（盒子）bus--buses(公共汽车)watch—watches(手表)dish—dishes(盘子；餐具)3)以辅音字母+结尾，变y为i再加-es。如city--cities(城市)country--countries(国家)baby—babies(婴儿)factory—factories(工厂)4)以f或fe结尾，复数变f或fe为v再加-es如knife-knives(书),half-halves(一半),wife-wives,wolf-wolves,shelf-shelves(thief（小偷）,wife（妻子）,life,shelf（架子）,knife,leaf（叶子）,self,half（一半）,wolf（狼)记忆小口诀:妻子（wife）持刀(knife)去宰狼(wolf)，吓的小偷(thief)发了荒躲在架(shelf)后保己(self)命(life)，半片树叶(leaf)遮目光。注意①有少数词后直接加s，如roof-roofs(屋顶)5)以o结尾(1)辅音字母加o结尾名词的加-es如tomato-tomatoes(西红杮)英雄喜欢吃西红柿和土豆。(2)元音字母加o结尾名词的加-spotato-potatoes(土豆)hero-heroes(英雄)如piano-pianos(钢琴),zoo-zoos(动物园)photo-photos(照片),kilo-kilos(千克)不规则变化1)元音字母发变化。如man--men(男人)，woman--women(妇女)tooth--teeth(牙齿)，foot--feet(脚)mouse--mice(老鼠)，policeman--policemen(警察)policewoman--policewomen(女警察)2)词尾发生变化。如child--children(小孩)3)单、复数形式相同。如fish--fish(鱼)，sheep--sheep(绵羊)，deer--deer(鹿)，Chinese--Chinese(中国人)注意不说anEnglish，要说anEnglishman.写出下列名词的复数形式。Knife______________Bus_________________Brush_________________dish_______________key_________________story________________mouse________________fox____________bench_______________kiss_______________peach______________lady______________city________________goose______________

sheep__________________man___________________thief_______________zoo_______________2.形容词性物主代词（1）形容词性物主代词相当于形容词，在句中只能用作定语，后面必须跟名词。Isthatyourbike?那是你的自行车吗？（2）如果名词前用了形容词性物主代词，就不能再用冠词、指示代词修饰词了。Thisishisdesk.（3）与形容词一起修饰名词时，形容词性物主代词要放在形容词的前面。hisEnglishbook他的英语书theirChinesefriends他们的中国朋友们单项填空（）1.—Isthis________ruler?—No,__________isoverthere.A.her;HerB.her;HersC.hers;HersD.hers;Her2.HelenandMaryaregoodfriends.________oftenhelpeachother.A.ThemB.TheirsC.TheyD.Their3.—Whatarethese?—____________arebikes.A.TheseB.ThoseC.TheyD.It4.ThisisHelenGreen.Helenis_________firstname.Greenis________last（）（）（）name.A.she;herB.her;sheC.her;herD.she;she（）5.Jackisafamouswriter._________newbookisverypopular.A.MyB.YourC.HerD.His3.一般疑问句及其简略回答能以yes或no作答的问句叫做一般疑问句。可以用完整的句子回答一般疑问句，但大多数情况下需作简略回答。如：—Isthisyourpencil?—Yes,itis(mypencil)

—Doyouhaveanymagazines?—Yes，Ido.—Aretheseyourbooks?—Yes,theyare—DoeshespeakEnglish?—No,hedoesn‟t单项填空（）1.—Isthathisbook?—____________.A.Yes,itisB.Yes,itisn‟tC.No,itisD.No,it‟s（）2.—__________yourChineseteacherverycold?—Yes,______________.A.Is,heis（）3.—Isthisabanana?—___________.A.Yes,it‟sB.No,itisn‟tC.Itis（）4.Isthathis___________?A.penB.apenC.pensB.Are;he‟sC.Are;heisD.Is;he‟sD.It‟sanapple.D.apens4.Well,haveagoodday!那好！愿你们玩得高兴！（用法）haveagoodday!用于表达祝愿，祝愿对方一天里有好的心情和运气。该句中的day还可用morning,afternoon等词语代替。Haveagoodevening,youtwo.祝你们俩晚上玩得痛快！可以用Thanks!You,too来回答。5.Herearetwonicephotosofmyfamily.这有两张我家人的漂亮照片。（用法）这是一个倒装句，当here,there放在句首时，后面的句子往往要倒装，即将句子的主谓倒装，该句子的真正主语时twonicephotosofmyfamily.句中动词be的单复数形式要与后面主语的单复数形式保持一致。Hereareyourbooks!这些是你的书。Hereisyourletter!

nicephotosofmyfamily是用of来表示名词的所有格，介词of表示“……的”，在英语中表示无生命名词的所有格。一般可以用amapofChina.一副中国地图thedoorofourclassroom我们教室的门应用of构成短语表示所属关系。1.YourEnglishbookishere!(改为倒装句)______________________________________________________2.Heisafriend_______mineA.onB.ofC.inD.with6.—Whataboutthisdictionary?这本词典是谁的呢？—It‟sHelen‟s（用法）Whatabout...?用于非正式场合中求意见，表示“……..怎么样？”“……又如何？”多所谈对话进行反问。或向对方征也可以说“Howabout?”例如：IlikeEnglish.Whataboutyou?我喜欢英语。你呢？I‟mbusythisafternoon.Whataboutthisevening?今天下午我比较忙。今晚怎样？about是介词，后面跟名词和动名词。Howaboutgoinghikingtomorrow?明天去远足怎么样？Helen‟s表示“海伦的”，„s是名词所有格。用在名词后面，表示“….的”ThisisMike‟sroom.应用（）1.—Whatabout________arest?—OK!Let‟sgoforawalk.A.tohaveD.having（）2.The___________booksareallintheclassroom.A.studentB.studentsC.students‟B.hadC.haveD.student‟s7.Thankyouforyourhelp.谢谢你的帮忙。（用法）thankyouforsth相当于thanksforsth.for表示原因。后接表达感谢的内容。For后面接名词。如果thanks后面跟动词，则要把动词改为动名词，即在动词后加ing.thankyouverymuchThanksalotManythanksThanksbforsth因为……而感谢某人Thankyouforyourtelephone谢谢你打电话给我。Thanksforyourhelp=Thankyouforhelpingme谢谢你的帮助。应用（）1.—Thanks_________joiningtheTalkShow!—You‟rewelcomeA.byB.onC.of2.多谢你的D.for手表________________________yourwatch.8.Asktheteacherforit!去老师那里拿。（用法）ask…for…表示表示“请….帮忙”。askfor是“动词求；要求”askfor还可表示“要求（见到某人）”。Youcanaskhimforthedictionary.你可以找他要Youcanaskyourteacherforhelp.你可以请你的Thereisaprettywomanoutsidewhoasksforyou.外面“向某人索取某物”。常用的短语有ask…forhelp.+介词”结构的动词意为“请短语。那本字典。老师帮忙。有位漂亮的女士找你。应用（）HeaskedhowmuchMarkTwainwould____________A.askoverB.askaboutC.askfor一单项选择（）1.________aremyparents.and____________ismybrother.A.This;thisB.This;thatC.These;thatD.These;those2.Thanks_________yourhelp.B.ofC.fromD.in（）A.for（）3.Mom,________ismyfriend,LiLei,LiLei,_________ismymother.A.this;thisB.that;thisC.that;thatD.these;those（）4.Drawapicture_______yourfamily.Andthenshowittous.B.ofC.fromD.in5.—Here_________somebooksforyou,Jim—Thanksverymuch.B.areC.amD.be6.Thepencilis_________A.mybrotherB.mybrother‟s7.—Aretheseyourbooks?—Yes,____________B.theyareC.theseareD.these‟re8.Ihave_________uncleand_________aunt.B.an;anC.an;aD.a,an9.—Who‟sknockingatthedoor?—Is________ourneighbour?B.heC.itD.she（）10.Thatismy_______,andthosearemy_______________.A.books；keysB.dictionary;booksC.schoolbag;notebookD.notebook;Englishbook（）11.—____________?—They‟rewhiteblouses.A.to（）A.is（）C.brothersD.brother（）A.itis（）A.a;a（）A.thisA.What‟sthatB.WhatarethoseC.WhatcoloraretheyD.Whatcoloristhis（）12.Thereis________”h”intheword“how”A.aB.theC.anD./（）13._________thatinJapanese?A.HowB.What‟sC.IsD.What

（）14.____________aregoodfriends.A.BettyandIB.I;BettyC.IandBettyD.BettyorI（）15.—_________,Tom,Isthisyourdictionary?—Yes,____________.A.Thankyou;thankyouD.Excuseme;thankyouB.Sorry;sorryC.Hello;sorry（）16.Whatabout_______somebread?A.haveB.havingC.tohaveD.tohaving（）17.Thisis_______e-dictionaryand_______e