B: I think it's mainly from the environment a person lives in.

A: Don't you think people get their personalities from their parents?

B: No, but parents control a lot of the environment that kids grow up in, so they certainly influence their kid's personalities a lot.

A: So why do you think many kids have personalities that are so different from their parents.

B: Maybe when they become teenagers, they want to be completely different to their parents.

A: You might be right. I guess most parents want their kids to be like them, but kids today grow up in a different environment. You know, they know much more about the world from the internet, newspapers, and tv.

B: Do you think that teenagers get a lot of their bad behaviour from tv and movies?

A: Maybe some of it. I think a lot of people blame TV and movies when the real problem is that the parents aren’t bringing their child up correctly.

B: Parents have a difficult job. They have to bring up their children and usually have to work too.

A: Yes, that's true. Your son is doing well at school, isn't he?

B: Yes, he is. He's very hardworking when he's at school. Then he comes home from school and does his homework before dinner. After dinner, he goes out with his friends.

A: So, he's not a bookworm? It's good that he has an outgoing personality. Some kids are very quiet and introverted. You wonder how they'll survive in the real world without their parents to support them.

形容子女和父母相似的表達

a chip off the old block: a person who is very similar to their mother or father in the way that they look or behave (相貌或性格)酷似父親或母親的人

take after somebody: to look or behave like an older member of your family, especially your mother or father (外貌或行為)像(父或母)
Your daughter doesn't take after you at all. 你女兒長得一點兒都不像你.