unit 3 this is my sister.
重点短语：family tree 家谱 thanks for 为……而感谢 the photo of your family 你的全家照。
重点句型：this / that is ……用于介绍别人的句型)
thanks for = thank you for + n / v-ing. 为……而感谢。
here + be + 名词（名词作主语）
语法知识：1. 指示代词these , those 的用法：
1） these 是this 的复数形式，指距离较近的人和事物。
2） those 是that 的复数形式，指距离较远的人或事物。
3） 复数代词 these / those 做主语时，be动词要用are ，后面的名词用复数形式；对其疑问句的回答须用 they 代替。
--are these your books
-yes, they are./no, they aren’t. (注：aren’t = are not )
2. 人称代词he, she , it 的用法：
（1）he指代男性he is my good friend. 他是我的好朋友。
（2）she 指代女性 this is mary. she is my sister.
(3 ) it 指代动物或无生命事物，有时不能确定性别时，也可用it来指代。
look ! a cat ! it’s red.
3. 物主代词： my your his her
4. be 动词（am 、 is 、 are）的用法口诀：我（ i ）用am ,你（you）用are, is连着他（he）、她（she）、它( it );单数用is ; 复数全用 are.
i am mary. you are my friend. she is my mother. he is my father. it is a cat(猫)
练习题：section a 1a-2c
一、完成句子。
1、is this your __叔叔)？
2、kate and gina are his姐妹 )
3、these are my朋友).
4、look ,those are my兄弟).
5 my双亲）are pete and nancy.
二、 根据句意和首字母提示完成句中所缺的单词。
1. my father and mother are my p
2. my father’s brother is my u
3. my mother’s sister is my a
4. my mother’s mother is my g
5. my father’s father is my g
三将下面的词变成复数。
1. this friend
2. my brother
3. grandparent
4. her uncle
5. that key
section b 3a-4
一、 单句改错，下列句子均有一处错误，请指出并改正。
1. is(a) these(b) your(c) photos(d
2. what's(a) those(b) in(c) chinese(d
3. nice(a) to(b) meet(c) your(d
4. those(a) aren't(b) her(c) watchs(d
5. do(a) you(b) his(c) friend(d
二．按要求写出相应的词。
1．this（反义词2．these（反义词。
3．it（复数形式4．that（复数形式。
5．photo（复数形式6．picture（复数形式。
7．cousin（复数形式8．friend（复数形式）__
9．son（对应词10．sister（对应词。
section b 1a-2c
一用am，is，are填空。
1 excuse methis your eraser?
2．whatthosethey birds?
3．thishis ruler. wheremy ruler?
4．iin class threeyou in class three，too?
5these her english books?
6．thosetheir apples. wherehis apples?
7．sheeleven. how oldthat boy?
8．hemy friendyour friend a boy or a girl?
9those maps? no，theynot. theypictures.
10．theseyour bananas. here you
二从b栏中选出a栏各句的答语。
a 1. is han mei your classmate?
2. who's that?
3. are these his friends?
4. is he tom?
5. is that your uncle?
b a. no, they aren't.
b. yes, he is.
c. no, he isn't. my uncle wears glasses.
d. yes, she is.
e. my brother.
section b 3a-4b
一单项选择。
1. _is alice. it’s __backpack.
a. these; her b. this; his c. this; her
2. _your pen.
a. thanks of b. thank of c. thanks for
3. —is gina your friend
a. yes, she’s b. yes, it is c. no, she isn’t
4it’s a ruler.
a. what’s this b. is this a ruler c. what are these
5. —is tony __brother?
yes, he is.
a. me b. you c. your
6. here ismy family.
a. a photo of b. photo of c. a photo
7. my uncle’sis my cousin.
a. son b. daughter c. a and b
8. are __her parents?
a. this b. these c. that
9. this is jennythat is jim. they are my good friends.
a. or b. and c. too
10. wei hua and istudents.
a. aren't b. isn't c. am not
二、阅读理解。
look! this is a picture of my family. my mother is a doctor.
my father is a teacher. this is my brother. his name is harry.
he's twelve. he's a student. that is my grandmother.
ah, this is me. my name is may. i'm ten.
i'm a student. harry and i are in the same school.
根据短文内容，判断下列句子正(t)、误(f)。
1. this is a picture of my family.
2. my mother is a teacher.
3. harry is my brother.
4. harry is twenty.
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