名词单复数 (1).ppt

1、CHOLOATE,名词单复数,可数名词,单数,如何变化？,复数,变化规则,A、绝大多数的可数名词的复数形式,是 在该词末尾加上后辍-s。 例：friend friends; cat cats; picture pictures; sport sports; Exercise: doctor cap ,doctors,caps,例：bus buses; box boxes; fox foxes; match matches; Exercise: watch ; class ,watches,B、凡是以s、x、ch 、sh 等结尾的词，在该词末尾加上后辍 - es 构成复数。,classes,例：

2、family famlies; city cities; dictionary dictionaries; Exercise: story baby ,C、以辅音字母+y结尾的名词，将y改变为i，再加-es。,stories,babies,potato potatoes; tomato tomatoes反例：piano pianos; photo photos; Exercise: negro(黑人) ;hero (英雄),D、以-o结尾的名词，有生命的词加-es而无生命的 加-s构成复数。,negroes,heroes,黑人、英雄爱吃土豆和西红柿,例：knife knives; life l

3、ives; leaf（树叶） leaves; 反例：roof （屋顶） roofs Exercise: thief（小偷) ;half ；,E、以-f或-fe结尾的名词，多为将-f或-fe改变为-ves，但有例外。,thieves,halves,wife(妻子)，knife(小刀) wolf(狼)，thief(小偷) shelf(架子)，self(自己)，life(生命)，half(一半)，leaf(树叶)。,妻子持刀去宰狼， 小偷吓得发了慌； 躲在架后要保命， 半片树叶遮目光。,六、部分单词的复数形式不变。 例：fish fish; sheep sheep; cattle cattle; d

4、eer deer,七、极少数单词，其复数形式没有任何规律。 例：man men; woman women; child children; people people ;,专项练习,写出下列名词复数 1.leaf_ 2.box_ 3. knife_ 4.fox_ 5.bus_ 6.ruler_ 7.story_ 8.family_ 9.child_ 10.tooth_,leaves,boxes,knives,foxes,buses,rulers,stories,families,children,teeth,用所给的单词的复数的正确形式填空： 1I have two _ (pencil-box

5、). 2There are three _(chair) in the classroom. 3These _ (tomato) are red. 4_(hero) are great. 5My brother looks after two _(baby) 6There are some _(deer) eating the grass.,pencil-boxes,chairs,tomatoes,Heroes,babies,deer,选出正确形式 1I can see three _ in the zoo. A monkeys B monkeys C monkey 2.The pig has four _. foot B. feet C. foots 3.My two brothers are both _. A. policeman B.policemans C. policemen 4.The _ has three_. A.boys,watches B.boy,wa