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1、可数名词有单数和复数两种形式。指一个人或一件事物时，用单数形式；指两个或多个人或事物时用复数形式。名词由单数形式变成复数形式的规则如下：1. 一般的名词词尾直接加-s 。如：book books room roomshouse houses day days2. 以s,ss, ch,sh, x 结尾的名词，在词尾加-es 。如：bus buses glass glasseswatch watchesdish dishes box boxes3. 以辅音字母+y结尾的名词，要先将y改为i再加-es。如：city cities body bodiesfactory factories等等。4. 以
2、f 或fe 结尾的名词，要将f或fe改为v再加-es。如：half halves leaf leavesknife knives wife wives5. 特例 悄悄话：特例常常考，要记住。 child children man men woman womenpoliceman policemen(规律：man men) tomato tomatoespotato potatoes悄悄话： 初中英语以o 结尾的名词变复数时只有这两个词加-es，其余的当然加-s喽！如：photo photos foot feet tooth teeth悄悄话： oo变成ee。 sheep, Chinese, J
3、apanese单、复数同形悄悄话：变复数时词形不变。 people单数形式表示复数意义，要求谓语动词用复数；people的复数形式peoples通常指多个民族。三、 不可数名词的家务事1. 不可数名词没有复数，当它作句子的主语时，谓语动词要用单数形式。如：The food is very fresh.食品很新鲜。2. 有的不可数名词也可以作可数名词，有复数形式，但他们的意义往往发生变化。如：water (水) waters (水域)orange (橘汁) oranges (橘子)3. 很多的不可数名词表示泛指时为不可数，表示种类时就可数，但意义大多不发生变化。如：fruit fruits fo
4、od foodsfish fishes hair hairs用所给名词的适当形式填空。1. How many_(sheep) are there on the hill?2. There is some_(food) in the basket.3. The baby has only two_(tooth) now.4. There is a lot of_(water) in the bottle.5. There are five_(people ) in his family.6. Lets take_(photo), OK?7. I have lots of_(tomato) her
5、e.8. The_(leaf) on the tree turn-yellow.9. The_(child) are playing gameson the playground now.10. Their_(dictionary) look new.11. I see you have a few white_(hair).12. They are_(woman) doctors.13. Can you give me some bottles of _ (orange), please?14. There are many_(fox) in the picture.15. I would like some apple_(juice). I am very thirsty.把下列单词变成复数 1.tomato_ 2.museum_3.watch_ 4.fish_5.people_ 6.brush_7.man_ 8.leaf_9.bus_ 10.library_