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1、Unit3 Is this your pencil?Whats this in English?penslIts a pencil.Whats this in English?vpenIts a pen.bookWhats this in English?Its a book.What are these in English?They are book .sWhats this in English?Its an eraser.rez(r) Whats this in English?vrulerIts a ruler.Whats this in English?vpencil boxIts
2、 a pencil box.bks Whats this in English?vschoolbagIts a schoolbag.sku:lbg Whats this in English?vdictionaryIts a dictionary.dknrivpencil 铅笔vbook 书veraser 橡皮擦vpencil box 铅笔盒vschoolbag 书包vdictionary 字典Is this your pen?Is he Jack?Is she your sister?Are you Hellen?Are these your sisters?Yes, it is. /No,
3、 it isnt.Yes, he is. / No, he isnt.Yes, she is. / No, she isnt. Yes, I am. / No, Im not.Yes, they are. / No, they arent.vThis is her ruler.vIs this her ruler ?vYes, it is./No, it isnt.v (isnt=is not)vThis is his pencil.vIs this his pencil?vYes, it is. /No, it isnt.v (isnt=is not)vThese are her books
4、.vAre these her books?vYes, they are.vNo, they arent.v (arent=are not)一般疑问句一般疑问句Is this your pencil?（肯定回答）Yes, it is.（否定回答）No, it isnt.lisnt = is not特点及注意：特点及注意：1、问句使用升调、问句使用升调2、把、把be动词提前动词提前3一般疑问句必须先用一般疑问句必须先用 yes或或no回答回答.4、肯定回答时，、肯定回答时，it is 不不 能写成能写成its.5、在否定回答中，、在否定回答中，isnt不能写成不能写成is not.Are you
5、 Bob?Yes, I amNo, Im not.Are these your sisters?Yes, they are.No, they arent注：在肯定回答中注：在肯定回答中I am不能写成不能写成Im. they are 不能写成不能写成theyre. This is a ruler.（改为一般疑问句） a ruler?Is thisvThat is my eraser.v(改为一般疑问句并做否定回答）v easer?v , .IsthatyourNoitisntvIs this his dictionary?v(改为陈述句)v_ _ _ dictionary.Thisishisv
6、That is her book.v(改为一般疑问句并做否定回答) her book?_, _ _.IsthisNoitisnt改错 1 Is this a book? Yes, it isnt.2 Is that your dictionary? Yes, its.3 Whats that? Its ruler.vIts an eraser.vIts her eraser.vIts hers.v(hers= her eraser)Its a pencil box.Its my pencil box.Its mine.mine = my pencil boxvIts a pencil.vIts
7、 your pencil.vIts yours.yours=your pencilvIts a schoolbag.vIts his schoolbag.vIts his.v(his=his schoolbag)形容词性物主代词vmyvyourvhisvherv形容词性物主代词起形容词的作用，用在名词前 v(举例)名词性物主代词 vmine (mine=my +名词)vyours (yours=your+名词）vhis (his=his+名词)vhers (hers=her+名词)v名词性物主代词=形容词性物主代词+名词v(为了避免重复) v(后面就不再加东西了)vIs this your p
8、en?vNo, it isnt. Its her pen.v(为了避免重复)vNo, it isnt. Its hers.v(hers=her pencil)vIs this her pencil?vNo, it isnt. Its my pencil.v(为了避免重复)vNo, it isnt. Its mine.v(mine=my pencil)vIs this her easer?vYes, its her eraser.v(为了避免重复)vYes, its hers.vIs that your schoolbag?vNo, it isnt. Its his schoolbag.v(为了
9、避免重复)vNo, it isnt. Its his.v注意：在使用名词性物主代词时，必须有特定的语言环境，也就是要省略的名词大家已经知道，已经提起过。 v例：Its hers. v是她的。 （单独使用大家不知是怎么回事，不可以这样用） v There is a book. Its hers. v那有本书。是她的。 （先提及，大家才明白） 可数名词有可数名词有单数和复数单数和复数两种形式。名词的复两种形式。名词的复数形式的部分规则如下：数形式的部分规则如下：一般情况加一般情况加spencil pencils, pen pens , book books, boy boys以以s, sh, ch
10、, x 等结尾的加等结尾的加esclass-classes ,box-boxes,watch-watches,以辅音字母以辅音字母y结尾的词，结尾的词，变变y为为i,在加在加esdictionarydictionaries,family- families不规则变化：不规则变化：manmen, woman women, footfeet, a Chinese three Chinese, child-childrenv1、一般在词尾加、一般在词尾加s. cups 杯子 days 日子hands 手 hats 帽子 pens 笔 pencils 铅笔v2、以、以s,sh,ch,x结尾的词在词尾加
11、结尾的词在词尾加es class-classes 班级 bus-buses 公共汽车box-boxes 盒子 watch-watches 手表v3.以辅音字母加以辅音字母加y结尾的词，变结尾的词，变y为为i，再加，再加es army-armies 军队story-stories 故事 factory-factories 工厂 baby-babies 宝贝 dictionary-dictionaries 字典 family- families 家庭 4.以以o结尾的词，多数加结尾的词，多数加s photo-photos, kilo-kilos 公里 少数以少数以o结尾的词，在词尾加结尾的词，在词
12、尾加es tomato-tomatoes 西红柿 hero-heroes 英雄potato-potatoes 土豆 (番茄，土豆，英雄)v5、以、以f或或fe结尾的词，多数把结尾的词，多数把f,fe变为变为v，再，再加加es leaf-leaves 树叶 thief-thieves 小偷 wife-wives 妻子 knife-knives 小刀 shelf-shelves 架子不规则变化vman-men 男子 woman-women 女人 foot-feet 脚goose-geese 鹅 tooth-teeth 牙齿 mouse-mice 老鼠child-children 小孩 单复数同形vsheep-sheep 绵羊 deer-deer 鹿Chinese-Chinese 中国人 Japanese-Japanese 日本人