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1、UNIT 3 GRAMMARThe third period主格（做主语）主格（做主语）be 动词动词形容词性物主代词形容词性物主代词名词性物主代词名词性物主代词IammymineweareouroursyouareyouryoursheishishissheisherhersitisitsitsTomisTomsTomstheyaretheirtheirsPRACTICE1.I _ a Chinese boy._ name is Li Lei.2.A:Is this his pencil?B:Yes,_ is.Its _ pencil.3.A:Is this your book?B:Yes,
2、it is.Its _.4.This is Bob._ mother _ in Deyang.5.A:Are these _ eggs?B:Yes,_ _.They are hers.6.A:What _ this in English?B:_ is an apple.7.I have a geen apple.But thats a red apple.Its Ginas apple.Because _apple is red,and _ is green.含有BE动词的句子，如何变成否定句直接在be动词之后，加上not.This is my dictionary.This is not m
3、y dictionary.Its a red key.Its not a red key.They are my friends.They are not my friends.Those are blue cars.Those are not blue cars.PRACTICE 将下列句子变成否定句1.I am a Middle School student.2.My parents are in Beijing now.3.This is an English dictionary.4.Those are my family photos.5.Here is my key.6.We ar
4、e Chinese,but he is English.7.The blue pen is Ginas.8.My quilt is white,hers is yellow and theirs are purple.9.There is a map in Class One.10.There are ten maps in Class Five.含有BE动词的句子，如何变成一般疑问句直接把be动词提前置首提前置首，其余照抄下来，句末加上问号。如遇第一人称，需将其改为第二人称。It is a Chinese map.Is it a Chinese map?He is from China.Is
5、 he from China?They are red backpacks.Are they red backpacks?These are his brothers.Are these his brothers?I am in Class One.Are you in Class One?This is my mother.Is this your mother?PRACTICE1.This is my friend.2.She is in Sichuan.3.The red book is my mothers.4.They are his parents.5.It is an orange jacket.6.The blue T-shirt is Toms.7.My father is a teacher.8.These are English books.9.That is a white cat.10.Those students are from Class One.11.My name is Gina Smith.12.Her eraser is in her pencil case.