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1、在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。现归纳总结如下： 一、人称代词he, she, it是第三人称单数。如： He likes watching TV. 他喜欢看电视。 She has lunch at twelve. 她十二点吃午餐。 It looks like a cat. 它看起来像只猫。 二、单个人名、地名或称呼作主语；是第三人称单数。如： Han Mei looks like her mother. 韩梅看起来像她的母亲。 Beijing is in China. 北京在中国。 Uncle Wang often mak
2、es cakes. 王叔叔经常做蛋糕。 三、单数可数名词或this / that / the+单数可数名词作主语时，是第三人称单数。如： A horse is a useful animal. 马是有用的动物。 This book is yours. 这本书是你的。 That car is red. 那辆小汽车是红色的。 The cat is Lucys. 这只猫是露茜的。 四、不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。如： Everyone is here. 大家到齐了。
3、There is something wrong with the watch. 这块手表有毛病。 This is a pen. 这是一支钢笔。 That is an eraser. 那是一块橡皮擦。 五、不可数名词作主语时为第三人称单数。如： The milk is in the glass. 牛奶在玻璃杯里。 The bread is very small. 那面包很小。 六、当数字或字母作主语时，看作第三人称单数。如： 6 is a lucky number. 6是个吉利数字。 I is a letter. I是个字母。巩固练习题：I.写出下列动词的相应形式：1. 第三人称单数： was
4、h_ match_guess_ study_ finish_ go_ snow_ carry_stop_see_drive_let_carry_keep_join_find_think_teach_ catch_写出下列动词的第三人称单数drink _ go _ stay _ make _look _ have_ pass_ carry _come_ watch_ plant_ fly _study_ brush_ do_ teach_二、用括号内动词的适当形式填空。1. He often _(have) dinner at home.2. Daniel and Tommy _(be) in
5、Class One.3. We _(not watch) TV on Monday.4. Nick _ to the zoo on Sunday.5. _ they _(like) the World Cup?6. What _they often _(do) on Saturdays?7. _ your parents _(read) newspapers every day?8. The girl _(teach) us English on Sundays.9. She and I _(take) a walk together every evening.10. There _(be)
6、 some water in the bottle.11. Mike _(like) cooking.12. They _(have) the same hobby.13. My aunt _(look) after her baby carefully.14. You always _(do) your homework well.15. I _(be) ill. Im staying in bed.16. She _(go) to school from Monday to Friday.17. Liu Tao _(do) not like PE.18. The child often _
7、(watch) TV in the evening.19. Su Hai and Su Yang _(have) eight lessons.20. What day _(be) it today? Its Saturday.可数名词有单数（Singular Form）和复数(Plural Form)两种形式表示一个人或物用单数形式，表示一个以上的人或物用复数形式。1一般在词尾加-s。s在浊辅音后面读z，在清辅音后面读s，在t后与t一起读ts在d后与d一起读dz。例如： book books 书 day days 天、日 dog dogs 狗 tree trees 树2以s，sh，ch，x结尾
8、的词在词尾加-es，读iz.例如： glass glasses 玻璃杯 watch watches 手表 box boxes 盒子 brush brushes 刷子3以o结尾的词有些加-es，读z；有些加-s，读s。例如： tomato tomatoes 西红柿 potato potatoes 土豆 photo photos 相片 radio radios 收音机 zoo zoos 动物园4以f 或fe 结尾的词，先把f 改为v，再加es，读vz。例如： knife knives 小刀 leaf leaves 树叶 life lives 生命 thief thieves 小偷5以辅音字母加y
9、结尾的，先把y 改为i，再加-es，读z。例如： story stories 故事 city cities 城市 family families 家庭 baby babies 婴儿 注意：boy boys 男孩 toy toys 玩具 key keys 钥匙6有些名词有不规则的复数形式。例如： man men 男人 woman women 妇女 tooth teeth 牙齿 foot feet 脚7有些名词的单复数形式相同。例如； deer deer 鹿 sheep sheep绵羊 Chinese Chinese 中国人 Japanese Japanese 日本人8有些学科名词虽以s 结尾，但
10、通常都做单数名词看待。例如： physics 物理 maths 数学 politics 政治 news 新闻9有些单数形式的名词具有复数的含义，要当作复数看待。例如： people 人们，人民 police 警察 public 公众 名词由单数变成复数的练习写出下列名词复数leaf_puppy_box_knife_fly_fox_bus_bench_brush_kiss_church_dish_ruler_peach_glass_pencil_boy_zoo_man_roof_sheep_knife_lady_key_story_watch_bamboo_city_family_day_app
11、le_eraser_speech_thief_mouse_fish_goose_people_ox_Chinese_deer_foot_child_tooth_guy_hero_spy_boss_monkey_ city _ goat _ radio _ horse _ dog _two_(pair) of_(shoe)用所给的单词的复数的正确形式填空：1There are so many_(wolf)in the forest.2There are three _(chair) in the classroom.3These _(tomato) are red. 4_(hero) are g
12、reat.5My brother looks after two _(baby)6There are some _(deer) eating the grass.7My father likes to eat _(potato).8Chinese _(people)like to eat noodles.9I have a lot of _(toy) in my bedroom.10I help my mother wash _(dish) in thekitchen.11I have two _(pencil-box). 12There are some _(bus)in the street.13Peter has eight _(foot). 14Linda has three _(tooth).15There are some _(child) in the garden.16Michael likes the _(mouse).17There are some _(goose)in the river.18
