Unit3名詞單數(shù)變復數(shù)

1、Unit 3 Campus Life 名詞單數(shù)變復數(shù)名詞單數(shù)變復數(shù)學習目標：能夠掌握可數(shù)名詞單學習目標：能夠掌握可數(shù)名詞單 數(shù)變復數(shù)的規(guī)則變化。數(shù)變復數(shù)的規(guī)則變化。教學重、難點：能夠掌握可數(shù)名教學重、難點：能夠掌握可數(shù)名 詞單數(shù)變復數(shù)的詞單數(shù)變復數(shù)的 規(guī)則變化。規(guī)則變化。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 Engl

2、ish book.-They are English books.backpackswatchesorangespens-Whatre these ?-Theyre .mapscaseskeys-Whatre those ?-Theyre .單數(shù)復數(shù)可數(shù)名詞如何變化？規(guī)則變化不規(guī)則變化規(guī)則變化規(guī)則變化1.一般情況下，直接在詞尾加-s構(gòu)成復數(shù)形式。pencardrulernamespenscardsrulersbox2. 以s, x, ch, sh等結(jié)尾的名詞， 在詞尾加-es構(gòu)成復數(shù)形式。boxesclassclas

3、seswatchwatchesbrushbrushessxshch2.busbusesfoxesfox(狐貍)dish(盤子)dishes3. 以“輔音字母+y”結(jié)尾的名詞，應(yīng)改y為i，再加-es。familyfamiliescomediescomedy(喜劇)yyld3.citiesstrawberriescity(城市)strawberry(草莓)4. 以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s構(gòu)成復數(shù)形式 。boyboysdaydaysoayykeykeys5. 以f或fe結(jié)尾的名詞，先將f或fe變成v，再加-es構(gòu)成復數(shù)形式。knifekniveshalfhalves“小偷”(th

4、ie)的“妻子”(wife)用“刀子”(knife)和“樹葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。5.wivesleaveswolveswife(妻子)leaf(樹葉)wolf(狼)roof(屋頂)roofsroof“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“樹葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。巧記：6. 以o結(jié)尾的名詞，有的加-s, 有的加-es構(gòu)成復數(shù)形式。photophotosheroestomatoeszooszoo(動物園)tomato(西紅柿)hero(英雄)6.以o結(jié)尾的名詞,表示無生命事物的名詞，詞尾

5、加-s,表示有生命事物的名詞，詞尾加-es。 加-es的名詞有: negro,potato, tomato, hero巧記:黑人英雄愛吃黑人英雄愛吃 土豆燉西紅柿土豆燉西紅柿。 Sum up:1.一般情況下,直接在名詞詞尾加-s.2.以s,x,sh,ch結(jié)尾的名詞,在詞尾加-es. 3.以輔音字母加y結(jié)尾的名詞，要變y為i再加-es. 5.以f或 fe結(jié)尾的名詞，先將f或 fe變?yōu)関,再加-es.6.以o結(jié)尾的名詞,表示無生命事物的名詞加-s, 表示有生命事物的名詞加-es。4.以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s .給下列可數(shù)名詞加復數(shù) bird- card- lady- oran

6、ge- ruler- photo- friend- boy- watch- girl- case- cat- wife- tree- key- bed- hero- family- dictionary- question- leaf- party- cup-birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescupsthis that I you he / she / it am

7、/ is thesethoseweyoutheyare 單數(shù)單數(shù) 復數(shù)復數(shù)句子單數(shù)變復數(shù)句子單數(shù)變復數(shù)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 ?復數(shù)句子變單數(shù)句子復數(shù)句子變單數(shù)句子 These are These are dictionariesdictionaries. .單數(shù)