名词单数变复数show.ppt

* 名词单数变复数 --This is a pen. --These are pens. --That’s an English book. --Those are English books. backpacks watches oranges pens --What’re these ? --They’re … . maps cases keys --What’re those ? --They’re … . 名词单数变复数 (一)规则变化: 1.加s 2.以s, x, ch, sh结尾的名词加es 3.以辅音字母加y结尾的名词,先改y为i, 再加es (mothers, fathers, sisters, brothers) ( buses, boxes, watches ) ( family -- families dictionary -- dictionaries ) 区别 key – keys boy – boys toy-toys 名词单数变复数后s / es 的读音 1.在清辅音后读 / s / 2.在元音和浊辅音后读 / z / 3.在/ s / / z / /∫/ / / / t / / d /后 读 / iz / 4.在/ t /后读/ ts /，在 / d /后读 / dz / ∫ desks maps brothers pens classes, watches, oranges cats, friends Game: apples buses watches leaves babies tomatoes pencil-boxes boys knives apple bus watch leafe baby tomato pencil-box boy knife (二)不规则变化: 4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) 2.man, woman men, women women doctors 1.以o结尾两菜加es: potatoes (土豆) tomatoes (西红柿) Chinese(中国人) Japanese(日本人) 6. oo ee： foot(脚) tooth(牙齿) goose(鹅) 5. 以 f / fe结尾的,变f为v, 再加es wife(妻子) knife (小刀) shelf (架子) leaf (叶子) wolf (狼) 3. child（孩子） children pen desk key box knife card orange boy friend parent mother father sister brother son daughter cousin family child man pencil case sheep s s s s es knives s s s s s s s s s s s families children men s sheep 句子单数变复数 This is a book. That is an eraser. It is a red apple. I am a boy. He / She is a teacher. What’s this ? These are books. Those are erasers. They are red apples. We are boys. They are teachers. What’re these ? this – that – I – you – he / she / it