Unit 2 School in CanadaLesson 10Lead-inFree talkHow many students are there?There are four students.How many desks and chairs are there?There are six desks and four chairs.New wordsword单词；字；话语Pencils and chairsCan you find the differences?These words have no s.This is one pencil.This is a chair.These words have an s.These are many pencils.These are many chairs.Language points名词变复数的规则（一） 一般情况下，可数名词的复数形式是在单词的词尾 -s. 如： book-books 书 ; car-cars 小汽车 ; pen-pens 钢笔1. -s 在清辅音后读 /s/. 如： book-books 书2. -s 在浊辅音和元音后读 /z/. 如： bed-beds 床Boxes and busesThese words have no es.This is a box.This is a bus.These are many boxes.These are three buses.These words have an es.Language points名词变复数的规则（二） 以“ sh, ch, s, x” 结尾的名词变复数时，一般直接在词尾加 -es ，读作 /iz/ 。如： dish-dishes 盘子 ;watch-watches 手表 class-classes 班级 ;fox-foxes 狐狸Tomatoes, potatoes and photosThis is a tomato.This is a potato.This is a photo.These are many tomatoes.These are many potatoes.These are many photos.Do you see an s or an es in these words? Yes!Language points名词变复数的规则（三） 以辅音字母加 o 结尾的名词变复数，一般在词尾加 -es ，读 /z/ 。 photo 是一个例外，其复数形式是 photos 。如：tomato-tomatoes 西红柿 ; potato-potatoes 土豆 ; 以元音字母加 o 结尾的名词变复数，一般在词尾加 -s 。如： radio-radios 收音机 ; zoo-zoos 动物园。Men, women and childrenThis man is old. This woman is dancing.This child is walking.These men are young.These women are singing.These children are playing.Do you see an s or an es in these words? No!Language points名词变复数的规则（四） 此类属于名词单数变复数的不规则变化形式。 单复同形： sheep-sheep 绵羊 ; deer-deer 鹿 ; Chinese- Chinese 中国人 变内部元音 a 变 e ， oo...
