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 pens.-What are those?-Whats that?-Its an English book.-They are English books.backpackswatchesorangespens-Whatre these ?-Theyre .mapscaseskeys-Whatre those ?-Theyre .普

2、通名词可数名词不可数名词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，直接在词尾加一般情况下，直接在词尾加-s构构成复数形式成复数形式。结尾是清辅音读。结尾是清辅音读s，结尾是浊辅音或元音读结尾是浊辅音或元音读z。 carbackpackcarsbackpacksbookbooksnamepencardrulernamespenscardsrulersbox2. 以s, x, ch, sh等结尾的名词， 在词尾加-es构成复数形式。读iz boxesclassclasseswatchwatchesbrushbrushessxshchbusbusesfoxesfox

3、(狐狸)dish(盘子)dishes综合练习一综合练习一vglass- vdesk- vschool-vbox- vbrush- vhen-vmatch- vclass-vbus-veye-vwatch-vglasses vdesks vschoolsvboxes vbrushes vhensvmatches vclassesvbusesveyesvwatches3. 以“辅音字母+y”结尾的名词，应改y为i，再加-es。加读加读z familyfamiliescomediescomedy(喜剧)yyld4. 以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式 。boyboysdayd

4、aysoayykeycitiesstrawberrieskeyscity(城市)strawberry(草莓)综合练习二综合练习二vkey-vglass - veye -vwatch -vcity - vschool - keysvglasses v eyesvwatchesvcities vschoolsvbox -vbaby-vfamily-vbrush-vmatch-vboxes vbabies vfamilies vbrushes vmatches 5. 以f或fe结尾的名词，先将f或fe变成v，再加-es构成复数形式。尾音尾音f改读改读vz knifekniveshalfhalves“

5、小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。wivesleaveswolveswife(妻子)leaf(树叶)wolf(狼)roof(屋顶)roofsroof“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记一：按：wife（妻子），knife（小刀），wolf（狼），thief（小偷），shelf（架子），self（自己），life（生命），half（一半），leaf（树叶）。由self构成的复合词，其变化与sel

6、f相同（如myselfourselves；yourselfyourselves；himelf，herself，itselfthemselves）。巧记二：练习四练习四wife- knife- wolf- thief-shelf- self- life- half- leaf-wives knives wolves thieves shelves selves lives halves leaves6. 以o结尾的名词，有的加-s, 有的加-es构成复数形式。加读加读z photophotosheroestomatoeszooszoo(动物园)tomato(西红柿)hero(英雄)以o结尾的名词

7、,表示无生命事物的名词，词尾加-s,表示有生命事物的名词，词尾加-es。 加-es的名词有: potato, tomato, hero巧记:英雄爱吃英雄爱吃 土豆炖西红柿土豆炖西红柿。练习四练习四vpiano-zoo-vphoto-vTomatovradio-vpianosvzoosvphotosvtomatoesvradiosvSum 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. 5.以f或 fe结尾的名词，先将f或 fe变为v,再加-es.6.以o结尾的名词,表示无生命事物的名词加-s

8、, 表示有生命事物的名词加-es。4.以“元音字母+y”结尾的名词，直接在词尾加-s .不规则名词复数变化一不规则名词复数变化一deer-sheep-foot- tooth-goose - fish-Chinese-Japanese-deer sheep feet teeth geese fish Chinese Japanese不规则名词复数变化二不规则名词复数变化二man-woman-policeman-mouse- child-menwomen policemen mice childrenthis that I you he / she / it am / is thesethosew

9、eyoutheyare 单数单数 复数复数不规则名词复数变化三不规则名词复数变化三this- that -I - me - you - he/she/it/- him/her/it-am/is-these thosewe us you they themare综合练习三综合练习三me- Chinese- tooth- mouse- fish- you- she- watch- him- potato- shelf- child- woman- bag- bus- box- photo- sheep- this- that- I-us Chineseteeth mice fish you the

10、y watches them potatoes shelves children women bags buses boxes photos sheep- these those we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 T