回答如下:

1 形容词性人称代词如下:

第一人称: my 我的 our 我们的

笫二人称: your 你的 your 你们的

第三人称: his 他的 her 她的 its 它的

their 他们的， 她们的，它们的

2 形容词性人称代词，在句中放在名词前作定语。如:

(1) They are my books.

(2) Those are our desks.

(3) Is it your smartphone?

(4) Are these your apples?

(5) I think it's his sharpener.

(6) Her name is Dorothy.

(7)I have a cat. Its name is Mimi.

(8) Their hobbies are swimming.