七年级英语名词单数变复数专练课件

1、名词名词单数单数变变复数复数Whats this in English?Its an apple.What are these?They are two apples.-What are these?-Whats this?-Its a pen.-They are three pens.-What are those?-Whats that?-Its an English book.-They are English books.backpackswatchesorangespens-Whatre these ?-Theyre .mapscaseskeys-Whatre those ?-The

2、yre .单数复数可数名词如何变化？规则变化不规则变化规则变化规则变化1.一般情况下，直接加-srulerbackpackrulersbackpacksbookbooksnamepencardrulernamespenscardsrulersbox2. 以s, x, ch, sh等结尾的名词， 在词尾加-es。boxesclassclasseswatchwatchesbrushbrushessxshch2.3. 以“辅音字母+y”结尾的名词，变y为i，再加-es。familyfamiliesyy3.strawberr(草莓)strawberries4. 以o结尾的名词，有生命的加-es, 无生

3、命的加-sphotophotosheroestomatoeszooszoo(动物园)tomatohero(英雄). Sum up:1.一般情况下,直接在名词词尾加-s.2.以s,x,sh,ch结尾的名词,在词尾加-es. 3.以辅音字母加y结尾的名词，要变y为i再加-es. 4.以o结尾的名词,表示无生命事物的名词加-s, 表示有生命事物的名词加-es。把下列可数名词变为复数形式 orange- ruler- photo- friend- boy- watch- girl- case- tree- key- bed- hero- family- dictionary- question- pa

4、rty- cup-orangesrulersboysgirlscaseswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotospartiescupsthis that I you he / she / it am / is thesethoseweyoutheyare 单数单数 复数复数句子单数变复数句子单数变复数1. This is a book. 2. That is an eraser.3. It is a red apple. 4. I am a boy.5. He / She is a teacher.6. Whats this ? These are books.Those are erasers.They are red apples.We are boys.They are teachers.Whatre these ?复数句子变单数句子复数句子变单数句子 These are These are dictionariesdictionaries. .单数单数一般疑问句一般疑问句, ,并作肯定回答并作肯定回答划线提问划线提问 Th