构成方法例词1.一般在词尾加-sbook - books desk -desks flower- flowers2.以-s, -sh, -ch-x,结尾的加-esclass-classes dish - dishesbench- benches box - boxes3.以辅音字母加y结尾的词，把y变i加esfamily-families babybabies4.以f或fe结尾的名词,改 f 或 fe 为 vesknife-knives wife-wives half-haves5.以-o结尾的有生命的词后加esnegro-negroes hero-heroestomato-tomatoes potato-potatoes1. 名词复数的规则变化 变复数后的读音在清辅音后读 s 在元音及浊辅音后读 z 以s z d 结尾时读 iz2. 名词复数的不规则变化 单数与复数同形的名词sheep 绵羊 fish 鱼 deer 鹿 Chinese 中国人 Japanese 日本人 词尾加-en或-ren ox-oxen 牛 child-children 小孩 改变词内元音字母man - men 男人 woman - women 女人 foot - feet 脚 goose - geese 鹅 tooth - teeth 牙齿 mouse-mice 老鼠一. 名词单数变复数填空1. orange text bed cake computer apple house quilt plane tree lesson banana shirt month cup parent 2.piano photo radio zoo tomato potato hero negro 3.class fox watch glass dress brush box bus 4.shelf knife wife life leaf thief wolf 5.family country army city story baby butterfly 6.toy day key boy 7.sheep fish deer Chinese 8.child ox man woman foot goose tooth mouse 二.代词/ be动词单数变复数 this _ that _ I _ you _ she_ he _ it _ am _ is _三：把下列的单词变为复数形式1.key 2.boy 3.family 4.case 5.backpack 6.dictionary 7.watch 8.computer 9.game 10.notebook 11.bag 12.math 13.alarm 14.video 15.tape 16.hat 17.pear 18.egg 19.apple 20.carrot 21.vegetable 22.star 23.sock 24.shirt 25.shoe 26.skirt 27.sweater 28.clerk 29.store 30.shop_四：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? _五：名词复数变单数练习1：Those are my friends._2: They are English boys. _3: They are some erasers. _4: These are dictionaries. _5: we are students. _6: what color are your books ? _六：根据句意及所给单词填空。1：_(this) are my English books.2: The two boys are my _(cousin)3: - _those your parents? -Yes, they _.4: -Who are the man and the woman in the picture? -They are my _.5: My aunt Jane and my mother are _.6: They are my _(姨)。7: I have two _(watch). They are on the desk.8: I have some _(photo) of my family.9: Do you like these _(dictionary)?10: Are those your _(bus)?