1、12、放大镜和显微镜的发明,大大扩展了我们的视野,让我们走进微小世界,让我们看到了微生物和细胞。12、太阳是太阳系里唯一发光的恒星,直径是1400000千米。5、在咀嚼米饭过程中,米饭出现了甜味,说明了什么?16、大量的研究事实说明生命体都是由细胞组成的,生物是由细胞构成的。我们的皮肤表面,每平方厘米含有的细胞数量超过10万个。答:当地球运行到月球和太阳的中间,如果地球挡住了太阳射向月球的光,便发生月食。13、以太阳为中心,包括围绕它转动的八大行星(包括围绕行星转动的卫星)、矮行星、小天体(包括小行星、流星、彗星等)组成的天体系统叫做太阳系。21、血液中的细胞好像运输兵,负责运输吸入的氧气和产
2、生的二氧化碳。3、你知道月食的形成过程吗?2、物质变化有快有慢,有些变化只改变了物质的形态、形状、大小,没有产生新的不同于原来的物质,我们把这类变化称为物理变化;有些变化产生了新的物质,我们把有新物质生成的变化称为化学变化。专项练习一根据题意,用所给词的适当形式填空。Mary is a friend of _. ( I )This is _ ( she ) ruler. _ ( I ) is in the bag. Her brother is too young to look after _ ( he )This is _ ( I ) book. This book is _ ( I ).
3、These pens are _ ( we ).二、填写下列表格。人称代词我我们你,你们他她它他们主 格宾 格形容词性物主代词名词性物主代词反身代词三、改写下列句子Eg,:This is my book. - The book is mine.That is her ruler. _These are their footballs. _This is my backpack . _Those are your boxes. _四、把下列句子改写成复数。1. This is a butterfly. _2. That is a bus. _3. It is a mouse. _五、改错。1.T
4、his is mine lamp. _2.These are ours books._3. That are their teacher. _4.The house is my brother. _5. He has visited many country. _6. They are Chineses. _7. This is Tom red bike. _能力测试一帮下面的好朋友团圆 (连线) I 她its 我们her 他(她,它)们we 我they 你的their 他(她,它)们your 她的she 它的二、填空1.Shes a teacher . This is _ bag.2. He
5、s a driver. This is _ taxi.3. I am a boy . _ name is Peter.4. -Whats _ name? - My name is Tony.5. Its my puppy. _ name is Mimi.三、选择( ) 1.Your book is not so old as _. A. him B. he C. his D. she( ) 2. _ book is it ? Its _. A. Whoseher B. Whose hers C. Whohers D. Whom her( ) 3. He is a friend of _.A.
6、our B. us C. my D. mine四、改错1. I, you and he are all teachers. _2. This is mine teddy bear. _3. These are ours bags._4. These is their teachers. _五. 用所给词的适当形式填空。1That isnt _ kite That kite is very small , but _ is very big ( I )2The dress is _Give it to _ ( she )3Is this _ watch ? ( you ) No , its no
7、t _ ( I )4 _is my brother_ name is JackLook! Those stamps are _ ( he )5 _ dresses are red ( we ) What color are _? ( you )6 Here are many dolls, which one is _ ? ( she )7 I can find my toy , but wheres _? ( you )8Show _ your kite, OK? ( they )9 I have a beautiful cat _name is MimiThese cakes are _ (
8、 it )10Are these _ tickets? No, _ are not _ ( they) 11 Shall _have a look at that classroom?That is _ classroom ( we )12_ is my aunt Do you know _ job? _ a nurse ( she) 13That is not _ camera _is at home ( he )14 Where are _? I cant find _ Lets call _parents ( they ) 15 Dont touch _ _ not a cat , _
9、a tiger! (it)16_sister is ill ( she )17 _ dont know her name Would you please tell _ ( we )18 So many dogs Lets count _( they )19 I have a lovely brother _ is only 3 I like _ very much( he )20 May I sit beside _? ( you )21 Look at that deskThose books are on _ ( it )22 The girl behind _ is our frien
10、d(she ) 六. 选择填空。1We like_(he ,his ,him)very much2Is this guitar_?(you ,your ,yours ,yourself)3I made it_ (myself , my,mine)4This is _(I ,my,mine)book5_(He ,Him,His)and I often play table tennis together6The music will be good for_ (I , me , my ,mine)7My brother and_(he ,his ,him)are going to USA thi
11、s summer8Please give_(they ,them ,their)to_(she ,her )9Yesterday a policeman stopped _ (we,our ,us)10He speaks English to_ (they ,them ,theirs)七. 用正确的代词完成短文。 Hello!_name is Liu Yan_ am a student in No1 Primary School_ teacher is Mrs White_is a good teacher_ all like _very muchLook!_is a photo of_ fa
12、milyThe man in blue is my father_ is a policeman The woman beside_ is my mother_ is a nurse The girl between_ is_ have a happy family And _have a little dog Is_ lovely?八. 扩展练习(用am , is , are 填空)。1The two cups of milk _ for me 2Some tea _ in the glass3Gao Shans shirt _ over there 4My sisters name _Na
13、ncy5This _ not Wang Fangs pencil 6_ David and Helen from England ?7I _ a boy_ you a boy? No, I _ not8There _ a girl in the room9There _ some apples on the tree10_ _ there any apple juice in the bottle?11There _ some bread on the plate12 There _ a boy, two girls, three men and ten women in the park13You , he and I _ from China14 Here _ some sweaters for you15The black gloves _ for Su Yang16 This pair of gloves _ for Yang Ling17 Those cups _ ours18 That _ my red skirt19 Who _ I ?20 The jeans _ on the desk