在什么情况下用形容词性物主代词,在什么情况下用名词性物主代词

形容词性物主代词和名词性物主代词用法上的区别 （1）形容词性物主代词相当于形容词,在句中只可作定语,修饰名词.如：Their teacher is Miss Gao.（2）名词性物主代词相当于一个名词短语,在句中可作主语、宾语等成分.如：This is your bike,mine is under the tree.（作主语） 这是你的自行车,我的在树下.I like my pen,I don’t like hers（作宾语） 我喜欢我的钢笔,我不喜欢她的.That bag isn’t mine,it's yours.(作表语) 那个书包不是我的,是你的.（3）名词性物主代词作主语时,谓语动词的单、复数形式取决于它所替代的名词的数.如：My trousers are long,hers are short.我的裤子长,她的裤子短.Your school is big,ours is small.你们的学校大,我们的学校小.（4）形容词性物主代词不可单独使用,其后必须有被修饰的名词.如：那是他的椅子,我的在那儿.误 That's his chair,my is over there.正That's his chair,mine is over there.正That's his chair,my chair is over there.Whose用法 whose不等于who's.Whose是who的所有格形式,意为“谁的”,而who's是who is的缩略形式,意为“谁是”.但whose与who's同音,都读作[hu:z].whose在句中可作表语、定语等.如：Whose is that computer?那台电脑是谁的?（作表语） Whose sweaters are these?这些是谁的毛衣?（作定语） whose用来对物主代词及名词所有格进行提问：1．提问形容词性的物主代词.如：These are my bananas.→Whose bananas are these?2．提问名词性的物主代词.如：That bedroom is mine.→Whose is that bedroom?Hers are in the classroom.→ Whose are in the classroom?3．提问名词所有格（不包括of构成的所有格）.如：Those are the twins’ bags.→ Whose bags are those?Tom's mother is a good teacher.→ Whose mother is a good teacher