pencilThis is one pencil. pencils These are many pencils .chairThis is a chair .chairs These are many chairs . girl girlsappleanappleshathatsbox This is a box .boxesThese are many boxes .busThis is a bus .busesThese are three buses.tomato This is a tomato .tomatoes These are many tomatoes.potato This is a potato .potatoesThese are many potatoes.photophotophotoThis is a photo.photosThese are many photos.Lesson10 How Many Are There ?pencil---pencils chair---chairs box--boxesbus--busestomato---tomatoespotato--- potatoes }以 x,s,o 结尾的可数名词的复数形式一般在其后加 es一般在可数名词后直接加 s}photo---photos注意:以 o 结尾的有生命在其后加 es, 无生命的在其后加 s比一比,练一练• 写出下面可数名词的复数形式。• 1.book( ) 2. egg( ) 3.class( ) 4. bus( ) 5.watch( ) 6. fox( ) 7.dish( ) 8. fish( ) 拓展知识1. 以 s,x,sh,ch,o 结尾的可数名词的复数形式通常在其后加 es.如 class,bus,fox,dish,watch 等•注意:有生命的以 o 结尾的可数名词复数形式在其后加 es,无生命的以 o 结尾的可数名词复数形式在其后加 s. 如: negro ( 黑人 ) hero (英雄) potato( 土豆 )tomato (西红柿)后加 es . 而 radio( 收音机 )photo( 照片 ) 后加 s•2. 以辅音字母加 y 结尾的变 y 为 i 然后再加 es. 如 family(家庭)— families,strawberry (草莓)— strawberries 等•3. 以 f , fe 结尾的变 f , fe 为 v, 然后再加 es 如 wolf (狼)— wolves,wife (妻子)— wives,knife (小刀)— knives 等4. 不规则形式 man--men ,child--children 等