名词单数变复数课件

--Whatarethese?--What’sthis?--It’sapen.--Theyare

pens.第一页第二页，共23页。--Whatarethose?--What’sthat?--It’sanEnglishbook.--Theyare

Englishbooks.第二页第三页，共23页。backpackswatchesorangespens--What’rethese?--They’re….第三页第四页，共23页。mapscaseskeys--What’rethose?--They’re….第四页第五页，共23页。名词单数变复数(一)规则变化:1.加s

2.加s,x,ch,sh结尾的名词加es3.以辅音字母加y结尾的名词,先改y为i,再加es(mothers,fathers,sisters,brothers)(buses,boxes,watches)(family--families

dictionary--dictionaries)区别

key–keysboy--boys第五页第六页，共23页。(二)不规则变化:2.man,woman

men,women1.以o结尾的名词有生命的加es:potatoes(土豆)tomatoes(西红柿)无生命的在词尾加s:zoo(动物园)—zoosradio（收音机）---radiosphoto(照片）---photosChinese(中国人)Japanese(日本人)3.child（孩子）children（男人，妇女）第六页第七页，共23页。4.单复数同形(不变):sheep(绵羊)deer(鹿)fish(鱼),people(人，人民）mouse（老鼠）--mice5.ooee：foot(脚)—feettooth(牙齿)--teethgoose(鹅)--geese6.以f/fe结尾的,变f为v,再加eswife(妻子)——wivesknife(小刀)---knivesshelf(架子)—shelvesleaf(叶子)---leaveswolf(狼)---wolves第七页第八页，共23页。名词单数变复数后s/es的读音1.在清辅音后读/s/2.在元音和浊辅音后读/z/3.在/s//z//∫////t//d/后读/iz/4.在/t/后读/ts/，在/d/后读/dz/∫desksmapsbrotherspensclasses,watches,orangescats,friends

第八页第九页，共23页。pendeskkeyboxknifecardorangeboyfriendparentmotherfathersisterbrothersondaughtercousinfamilychildmanpencilcasesheepssssesknivessssssssssssfamilieschildrenmenssheep第九页第十页，共23页。名词单数变复数tomato(西红柿）hero（英雄）negro（黑人）radio（收音机）photo（照片）life（生命）knife（小刀）thief（贼）roof（屋顶）zoo（动物园）piano（钢琴）potato（土豆）第十页第十一页，共23页。this–that–I–you–he/she/it–am/is–thesethoseweyoutheyare

单数复数第十一页第十二页，共23页。一、写出下列单词的复数I--2.am--3.he–4.pencil--5.watch--6.dictionary--7.man--8.it--9.parent--10.boy–wearetheypencils

watchesdictionariesmen

theyparentsboys第十二页第十三页，共23页。句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.What’sthis?Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.What’rethese?第十三页第十四页，共23页。7.Thisisadictionary8Thatisyourbrother9Sheisagirl10ItisanIDcard11Heismyuncle12Iamastudent第十四页第十五页，共23页。二、句型转换1.Thisismymother.1）变否定句2）变一般疑问句，并作肯定回答Thisisnotmymother.Isthisyourmother?Yes,it/sheis.第十五页第十六页，共23页。2.Thatisacar.1）变否定句2）划线提问3)变复数句Thatisnotacar.What’sthat?Thosearecars.第十六页第十七页，共23页。3.That’sanEnglishdictionary.1）变否定句2）变一般疑问句，并作否定回答That’snotanEnglishdictionary.IsthatanEnglishdictionary?No,itisn’t.第十七页第十八页，共23页。4.Herfamilyname’sSmith.5.Myjacketislightblue.6.is,that,brother,my,Dave组词成句划线提问划线提问What’sherfamilyname?Whatcolorisyourjacket?Thatismybrother,Dave.第十八页第十九页，共23页。句型转换1.What’sthis?复数

What’rethese?2.He’saChineseboy.复数They’reChineseboys.第十九页第二十页，共23页。

3.Thisisabike.否定句复数句一般疑问句，并作肯定回答Thisisnotabike.Theseareb