熟记英语300句 中考英语无忧虑
—人教版初中英语高频考点、句型讲练（123）
主题句 Is this set of keys yours?
这串钥匙是你的吗？
考点：形容词性物主代词与名词性物主代词
1.物主代词是用来说明物品所属关系的代词，是人称代词的所有格形式。物主代词分为形容词性物主代词和名词性物主代词两类, 下表是两类词在人称和数方面的变化，需要牢记。
2. 形容词性物主代词，具有形容词性特征，在句中修饰名词作定语，意思是"某人的"，名词前不能同时再有冠词或指示代词修饰。
This is my book.( 不能用：This is a my book.)
这是我的书。
Your parents are coming to see you.
你们的父母将要来看望你们。
This is her book, but its cover has lost.
这是她的书，但它的封面没有了。
Our classroom is bigger than their classroom.
我们的教室比你们的教室大。
提示：汉语中表达"某人的""的"字有时会省略，如:我哥哥、你们老师，在这里 "我"和"你们"的实际意义分别是"我的"、"你们的"，要用形容词性物主代词，不能误用成 I brother, you teacher。
3. 名词性物主代词具有名词性特征，可以独立充当句子成分，在句子中可以作主语、表语、宾语等，意思是"某人的（人或物）"，相当于 "形容词性物主代词+ 名词"。
This isn't my schoolbag. Mine is in the classroom.
这不是我的书包，我的书包在教室里。(作主语，mine= my book)
The book isn't mine. It is his.
这本书不是我的，是他的。
(mine 和 his 都作表语，mine= my book; his= his book)
I have finished my homework. Have you finished yours?
我已完成我的作业。你完成你的了吗？
(yours 作宾语，yours= your homework)
Tom is a friend of mine.
汤姆是我的一个朋友。(不能用说 a friend of me.)
4. 巧辨形容词性物主代词和名词性物主代词
记住一句口诀：有名不名（有名则形），无名则名。
解释：后有名词，不用名词性物主代词（用形容词性物主代词）；
后无名词，则用名词性物主代词。
computer is not so expensive as , but it works well, too.
A. My; her B. Mine; her C. My; hers D. Mine; hers
第一空，后有名词computer,有名不名（有名则形），用形容词性物主代词 My; 第二空，后没有名词，无名则名，选择名词性物主代词 hers。因此答案为C.
小试牛刀：
1. –Is this new car _______? – No, it's _______.
A. his, his B. his, hers C. yours, my D. hers, your
2.–Is Alan a friend of ? – Yes, he is a friend of _______.
A. your; me B. your; mine C. yours; me D. yours; mine
3. I have a dog. _______name is Wangwang.
A. It B. Its C. It's D. Its'
4._______bag is new and_______ is new, too.
A. I; her B. I; his C. My; his D. My; her
5. Whose books are these? They are_______ .
A. me B. mine C. my D. I
答案：BDBCB