Dialogues

1. 你妹妹是做什么的？Nǐ mèimei shì zuò shénme de?
What does your younger sister do?
When talking to other people, you may want to know what he/she does for a living.If want to ask your younger sister's job. in Chinese can say:Ni3 mei4mei shi4 zuo4 shen2me de?
Ni3 is you. mei4mei is sister. Shi4 means be. zuo4, means to do. shen2me means "what". De here is a want to ask "what do you do"?
just need to change "ni3 mei4mei" into ni3.

2. 你觉得她怎么样？Nǐ juéde tā zěnmeyàng?
What do you think of her?
After knowing her career, I want to learn more about her. "what do you think of her"?
in chinese you can say : "ni3 jue2de ta1 zen3meyang4".
Ni3 means "you". Jue2de is quite a colloquial way of saying "consider or think" in Chinese. Ta1 means she or he or it. Zen2meyang4, together means how.Here zen2meyang4 is used to ask you opinion of some other one.

3. 她很漂亮。她特别聪明。Tā hěn piàoliang.
Tā tèbié cōngming.She's very kind. She's very smart.
Ta1 is she. Hen3 means very, 4liang is beautiful. te4bie2, very. cong1ming ，smart.