单元语法小专题(Grammar Focus)语法精讲1可数名词与不可数名词名词按其所表示的事物的性质可分为可数名词和不可数名词。凡是可以计算事物数目的名词，叫可数名词。可数名词有单数和复数两种形式，单数名词变复数名词时，有一定的规律可循(见下表)，但也有一些不规则变化，需要逐一记忆。凡是不能直接用数计算，而需要用量计算的名词，多为不可数名词，不可数名词没有复数形式。类别构成方法例词一般情况词尾加scupcupsfriendfriendsbananabananas以s，x，ch，sh等结尾的词词尾加esclassclassesboxboxeswatchwatcheswishwishes以辅音字母加y结尾的词变y为i，再加esdictionarydictionariesfamilyfamilies以f或fe结尾的词把f/fe变为v，再加esknifeknives词尾加sroofroofs以o结尾的词词尾加estomatotomatoespotatopotatoes词尾加sradioradiosphotophotos1.可数名词(1)单数可数名词前常用冠词a/an或my，your，his等物主代词或指示代词this，that来修饰。(2)若表示一类事物可用the加单数可数名词表示，也可用复数名词表示。2不可数名词(1)一般没有复数形式。(2)不能用不定冠词a/an或指示代词this，that，these，those或数词one，two，three等修饰，但可用定冠词the或some或lots of/a lot of(许多)来修饰。(3)不可数名词的数量要借助“基数词表示量的名词of”短语表达，如three pieces of bread(三块面包)，two glasses of milk(两杯牛奶)等。(4)作主语时，谓语动词要用单数形式。(5)用代词指代不可数名词时，用单数it，不用复数they或them。语法精练.写出下列名词的复数形式。1banana bananas 2.carrot carrots3tomato tomatoes 4.card cards5radio radios 6.question questions7desk desks 8.library libraries9map maps 10.school schools11room rooms 12.basketball basketballs13tape player tape_players14pencil box pencil_boxes15model plane model_planes.单项选择。 (C)16.Do you like_？Yes.I like them very much.Achicken BriceCapples Dicecream(A)17._is on the desk.Is it yours?AA pen BPensCBooks DSome pencils(C)18.I like to have three_and two_.Aorange；apples Boranges；appleCoranges；apples Dorange；apple(A)19.Lets get some_.OK.Abread BcarrotCegg Dtomato(C)20.Can I have_orange?Sorry，there isnt_.Aany；some Ban；someCsome；any Da；some.根据汉语意思完成句子，每空一词。21你喜欢水果和蔬菜吗？Do you like fruit and vegetables?22艾丽斯不喜欢鸡肉，凯特不喜欢鸡蛋。Alice doesnt like chicken and Kate doesnt like eggs23我妈妈早餐吃面包、喝牛奶。My mother has bread and milk for breakfast.24一些面包在桌子上。Some bread is on the table.25她想吃米饭和冰激凌。She wants to eat rice and icecream