七年级上册名词单数变复数

七年级上册名词单数变复数第一页，共27页。名词单数句子变复数句子第二页，共27页。Thisisanapple.Thatismysister.Theseareapples.Thosearemysisters.第三页，共27页。be动词表示“是”，有三个：am,is,are.我（I）用am,你(you)用are,Is用于他(he)、她(she)、它(it),单数后跟is,复数人称全部都用are.单数复数weyoutheythesethoseIyouhe/she/itthisthatamareisisisareareareareare第四页，共27页。Thisisanorange.Theseareoranges.Thatisapencil.Thosearepencils.第五页，共27页。

This

is

mygrandfather.Thisismygrandmother.

Theseare

mygrandparents.Thisismymother.Thisismyfather.

Thisismybrother.Thisismybrother,too.Theseare

myparents.

Theseare

mybrothers.第六页，共27页。把下列句子单数变成复数：1.Thisisabook.2.Thatisanorange.3.Thisismypencil.4.Thatisherquilt.5.Isthisyourwatch?6.Isthathisdictionary?7.Itismymap.8.That’shisring.Thesearebooks.Thoseareoranges.Thesearemypencils.Thoseareherquilts.Aretheseyourwatches?Arethosehisdictionaries?Theyaremaps.

Thosearehisrings.第七页，共27页。把下列句子变成复数。1.Thisismysister.2.Thisishercousin.3.Thatishisbrother.4.Thatismygrandparent.把下列句子变成单数。1Thesearemyfriends.2.Thosearehisparents.3.Thosearehersisters.4.TheseareLiLing’sbrothers.Thesearemysisters.Thesearehercousins.Thosearehisbrothers.Thosearemygrandparents.Thisismyfriend.Thatishisparent.Thatishersister.ThisisLiLing’sbrother.第八页，共27页。--Whatarethese?--What’sthis?--It’sapen.--Theyare

pens.第九页，共27页。--Whatarethose?--What’sthat?--It’sanEnglishbook.--Theyare

Englishbooks.第十页，共27页。backpackswatchesorangespens--What’rethese?--They’re….第十一页，共27页。mapscaseskeys--What’rethose?--They’re….第十二页，共27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第十三页，共27页。(二)不规则变化:4.单复数同形(不变):sheep(绵羊)deer(鹿)fish(鱼)2.man,woman

men,women1.加es:potatoes(土豆)tomatoes(西红柿)Chinese(中国人)Japanese(日本人)6.ooee：foot(脚)tooth(牙齿)goose(鹅)5.以f/fe结尾的,变f为v,再加eswife(妻子)knife(小刀)

shelf(架子)leaf(叶子)wolf(狼)3.child（孩子）children（男人，妇女）第十四页，共27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

第十五页，共27页。pendeskkeyboxknifecardorangeboyfriendparentmotherfathersisterbrothersondaughtercousinfamilychildmanpencilcasesheepssssesknivessssssssssssfamilieschildrenmenssheep第十六页，共27页。句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.What’sthis?Thesearebooks.Those

areerasers.Theyareredapples.Weareboys.Theyareteachers.What’re

these?第十七页，共27页。this–that–I–you–he/she/it–am/is–thesethoseweyoutheyare单数复数第十八页，共27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第十九页，共27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.第二十页，共27页。2.Thatisacar.1）变否定句2）划线提问3)变复数句Thatisnotacar.What’sthat?Thosearecars.第二十一页，共27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.第二十二页，共27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.第二十三页，共27页。句型转换1.What’sthis?复数

What’rethese?2.He’saChineseboy.复数They’reChineseboys.第二十四页，共27页。

3.Thisisabike.