Lesson12Howmanyarethere?pencilThisisonepencil.

pencils

Thesearemanypencils.chairThisisachair.chairs

Thesearemanychairs.

名詞單數(shù)變復(fù)數(shù)的規(guī)則1：一般直接加sboxThisisabox.boxesThesearemanyboxes.busThisisabus.busesThesearethreebuses.名詞單數(shù)變復(fù)數(shù)的規(guī)則2：

以s,x,sh,ch結(jié)尾的可數(shù)名詞的復(fù)數(shù)形式通常在其后加es.如class,bus,fox,dish,watch等tomatoThisisatomato.tomatoes

Thesearemany

tomatoes.potatoThisisapotato.potatoesThesearemanypotatoes.photophotophotoThisisaphoto.photosThesearemanyphotos.名詞單數(shù)變復(fù)數(shù)的規(guī)則3：以o結(jié)尾的名詞，有生命的加es，無(wú)生命的加s．但個(gè)別有生命的卻加s．如：1.negro(黑人)，hero（英雄），potato(土豆)，tomato（西紅柿）后加es；2.radio(收音機(jī))photo(照片)后加s；3.特殊的kangaroo后加s.

manThesearemen

womanThesearewomenThisisachildThesearechildren名詞單數(shù)變復(fù)數(shù)的規(guī)則4：有一些單詞變復(fù)數(shù)時(shí)改變其中的字母或詞尾發(fā)生變化，如man—men

woman—women

foot—feettooth（牙）—teethgoose[gu?s]（鵝）—geesechild—childrenox[??ks]（公牛）—oxen等

知識(shí)延伸：名詞單數(shù)變復(fù)數(shù)的規(guī)則5：1.以輔音＋y結(jié)尾的名詞，要把y變成i，再加es

.

如：baby—babies.family—families.2.以元音＋y結(jié)尾的名詞，要直接加s．如：boy—boys.3.以f或fe結(jié)尾的，要去掉f或fe,再加ves

.如：wolf—wolves,leaf—leaves，wife—wives，knife—knives.4.單復(fù)數(shù)同形。如：sheep—sheep(綿羊),deer—deer（小鹿）,

people-—people,Chinese—Chinese等5.fish很特殊，fish用作可數(shù)名詞指“魚的條數(shù)”時(shí)單數(shù)和復(fù)數(shù)形式相同（twofish兩條魚），指“魚的種類”時(shí)復(fù)數(shù)形式才為fishes（twofishes兩種魚）；fish用作不可數(shù)名詞時(shí)無(wú)復(fù)數(shù)形式，意為“魚肉”，Helpyourselftosomefish．隨便吃些魚。）一、看圖寫單詞.

1.Theseare_______.

2.Therearefive________.

3.Herearemany_______.

4.Theseare_______.

5.Herearesome_______.

6.Herearethree________.7.Theseare________.childrenpencilsdresseswomenstampsbusesmen二．改錯(cuò)：1．Thisisonepencils.2.Lookatthesewoman.3.Therearefivechilds.4.Thereismanydishes.5.Howmuchpencilsarethere?6.Howmanybookdoyouhave?7.Thestudentsisreadingbooksnow.(pencil)(women)(children)(are)(many)(books)(are)三．改寫句子：

1．Thisisapencil.(復(fù)數(shù))

2.Hereisadish.(復(fù)數(shù))3.Thesearesomebedrooms.(單數(shù))4.Herearetwowomen.(單數(shù))Thesearepencils.Herearedishes.Thisisabedroom.Hereisawoman.小結(jié)：名詞單數(shù)變復(fù)數(shù)的規(guī)則1.一般直接加s2.以s,x,sh,ch結(jié)尾的可數(shù)名詞的復(fù)數(shù)形式通常在其后加es.如class,bus,fox,dish,watch等。3.以o結(jié)尾的名詞，有生命的加es，無(wú)生命的加s．但個(gè)別有生命的卻加s．如：（1）.negro(黑人)，hero（英雄），potato(土豆)，tomato（西紅柿）后加es；（2）.radio(收音機(jī))photo(照片)后加s；（3）.特殊的kangaroo后加s.4.以輔音＋y結(jié)尾的名詞，要把y變成i，再加es.

如：baby—babies，family—families

.5.以元音＋y結(jié)尾的名詞，要直接加s．

如：boy—boys.6.以f或fe結(jié)尾的，要去掉f或fe,再加ves.

如：wolf—wolves,leaf—leaves，wifewife—wives

，knife—knives.

7.單復(fù)數(shù)同形。如：sheep—sheep(綿羊),deer—deer（小鹿）鹿）,people-—people,Chinese—Chinese等。8.有一些單詞變復(fù)數(shù)時(shí)改變其中的字母或詞尾發(fā)生變化，如：man—men

woman—women

foot—feettooth（牙）—teeth

goose[gu?s]（鵝）—geese

child—children

ox[??ks]（公牛）—oxen等