1、语法：名词复数Grammer：Plural nouns名 词noun可数名词Countable noun不可数名词Uncountable noun可数名词Countable noun不可数名词Uncountable noun可数名词是可以用来计数的名词，可数名词有单数和复数形式。不可数名词是不可以直接用来计数的名词，不可数名词没有复数形式，只有单数形式。名词变复数This is an apple.These are apples.apple applesRule 1名词 名词+sbook bookspen penscat catsbird birdsorange oranges词尾发音名词变复
2、数This is a box.These are boxes.box boxesbus busesbrush brusheswatch watchesRule 2以s,x,sh,ch结尾 名词+es名词变复数This is a butterfly.These are butterflies.butterfly butterflies baby babiesRule 3以辅音字母+y结尾 把y变i+es注：以元音字母+y结尾直接加s名词变复数This is a knife.These are knives.knife knivesleaf leavesRule 4以f/fe结尾 去掉f/fe+v
3、es名词变复数This is a potato.These are potatoes.This is a photo.These are photos.tomatopotatoNegroherophotoradiopianobamboo+es+sRule 5 以“o”结尾的名词，无生命的后面通常+s有生命的后面通常+es名词变复数 规则变化1.名词后直接+s2.以s,x,sh,ch结尾，名词后+es3.以辅音字母+y结尾，把y变i+es4.以f/fe结尾，去掉f/fe+ves5.以“o”结尾的名词，无生命的后面通常+s 有生命的后面通常+esman-men woman-women deer-deer sheep-sheepfoot-feet tooth-teethmouse-mice child-children名词变复数不规则变化Irregular wordsHomework：制作思维导图NAHTKS
