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1、 This is my sister 指示代词和单数句与复数句的转换1This is my sister.这是我的姐姐/妹妹。2Those are my parents.那是我的父母。3These are my brothers.这些是我的兄弟们。4This is my friend Jane.这是我的朋友简。5Thats my grandfather.那是我的祖父。6Whos she？她是谁？Shes my sister.她是我的姐姐/妹妹。7Whos he？他是谁？Hes my brother.他是我的哥哥/弟弟。8Whore they？他们是谁？Theyre my grandparent
2、s.他们是我的祖父母。1指示代词(1)定义：指示代词是用来指示或标识人或事物的代词。指示代词表示“这个”、“那个”、“这些”、“那些”等含义。指示代词有名词和限定词的功能。常见的指示代词有_，_，_，_等。(2)用法：指示代词可在句中作主语、宾语和定语。如：_ is a desk.这是一张书桌。(作主语)_ boy is my friend.这个男孩是我的朋友。(作定语)this和these表示所指的人或物距离说话人比较近，而that和those表示所指的人或物距离说话人比较远。如：_ is an orange and _ is an apple.这是一个橙子，那是一个苹果。从数上来看，thi
3、s和that指单数， these和those指复数。如：_ is my mother.这是我妈妈。_ are my parents.这是我的父母。this和that用作电话用语时，this指自己，而that指对方。如：Hello, _ is Mary. Is_ Xiaoli?你好！我是玛丽。你是小丽吗？当指示代词在疑问句中作主语时，其答句主语的变化：this, thatit; these, thosethey。如：Is_ a book？这是一本书吗？Yes, _ is.是的，它是。Are_ your friends?那些是你的朋友吗？Yes, _ are.是的，他们是。2单数句与复数句的转换(
4、1)将单数句中的指示代词、人称代词、名词及be动词等变为复数形式This/That is a ruler. These/_ are rulers.She is in China. They are in China.Im a boy. We _ _(2)将单数句中的不定冠词a, an去掉(某些固定搭配除外)。It is an apple. _ _ apples.That is a pencil. _ _ pencils. (3)单数句中的形容词、定冠词、副词、疑问词、介词等保持不变。The pen is red. The pens are red.What color is the jacke
5、t? What color are the jackets?注意 名词作定语时，一般用单数形式，被修饰的名词变复数时，一般情况下，作定语用的名词不需要变为复数形式，但由man或woman作定语修饰的名词变成复数时，两部分皆要变为复数形式。如：That is an orange quilt. Those are _ _She is a woman doctor. They are _ _His friend is a man teacher. His friends are _ _.写出下列单词的复数形式1this_2friend _3name _4is _5family _6that _7ke
6、y _8boy _9she _10parent _.单项填空 ()1._ my friends.AThiss BThatsCThese are DThese is()2.Look at the girls! _ are my sisters.AThose BThese CYou DThey()3.This _ my sister and those _ my friends.Ais; are Bare; isCare; are Dis; is()4.Hello, Mary. _ my friends, Jack and Jim.AThis is BThat isCThese are DIt i
7、s()5.Are _ her _？Athis; parent Bthis; parents Cthese; parent Dthese; parents()6.Im looking for my key, but I cant find_Ait BoneCthis Dthat()7.Is this your classmate?_. Its my brother. AYes, it is BYes, he is CNo, it isnt DNo, she isnt()8.Are those your erasers?_AYes, it is BNo, it isnt CYes, these a
8、re DNo, they arent.用指示代词this, that, these或those填空1Whats _ over there?Its a bus. 2Are _ your pencils?No, they arent. My pencils are here. 3Are_ your rulers?Yes, they are. I put them here. 4Hello. _ is Mary. Is _ Jack?.根据汉语意思完成句子1他们是我的父母。_ _ my _2那些是你的朋友们吗？_ _ your friends?3那些钥匙是什么颜色的？What _ _ those _
9、？4她是我的姐姐。_ is my _. 5“这是你的弟弟吗？”“是的，他们是。”_ _ your _？Yes, _ _. .按要求完成下列各题1This is a red jacket. (改为复数句)_ _ red _2Those are oranges. (改为单数句)_ _ _ orange.3Are these erasers？(作否定回答)No, _ _4They are girls. (改为单数句)_ _ _ _5your, is, sister, Lily(连词成句)_?.根据汉语提示完成短文This is a 1._(照片) of Mr. Blacks 2._(家庭). The
10、 man in the middle is Mr. Black, the 3._ (父亲). The woman is the 4._(母亲). They have a son and a 5._(女儿). The son is behind Mr. Black. His 6._(名字) is Jack. He is 10. Kate is Jacks 7._(妹妹). She is 8._(九岁). Jack is in Grade 9._(五) and Kate is in Grade Four. They are 10._(好的) students.详解详析【语法探究】1(1)this;
11、 that; these; those(2)This; ThisThis; thatThis; Thesethis; thatthis; it; those; they2(1)Those; are boys(2)They are; Those are(3)orange quilts; women doctors; men teachers【实战演练】.1.these2.friends3.names4are5.families6.those7keys8.boys9.they10.parents.1.C由后面的“friends”可知用these are。2D代替前文提到的复数名词用they。3A考
12、查be动词的用法。this表示单数，用is; those表示复数，用are。4C5.D6.A7C指示代词this在疑问句中作主语时，其答句的主语用it，故排除选项B和D。根据“Its my brother.”可知选C。8D根据题干中的those可排除选项A和B。回答these和those的一般疑问句时，应用代词they来作答，故选D。.1.that2.those3.these4This; that.1.They are; parents2.Are those3color are; keys4.She; sister5Are these; brothers; they are.1.These are; jackets2.That is an3they arent4.She is a girl5Is Lily your sister.1.photo/picture2.family3.father4mother5.daughter6.name7s
