1.单词：

healthy健康的,  unhealthy不健康的,  healthy food健康的食物,  unhealthy food不健康的食物,  be good for对……有好处,  be bad for对…有坏处.

2.句型:

I want ……….. for dinner.

我晚餐想要……

………….. is/are good/bad for you.

……对你有好处/坏处。

I want some chicken soup for dinner.

Chicken soup is good for you.

I want a burger for dinner.

Burger is bad for you.

3.

Dialogue 1:

A:  Mom, I am hungry.

妈妈，我饿了。

B:  What do you want for dinner?

你晚餐想要什么？

A:  I want ………… for dinner.

我晚餐想要……

B:  …….. is/are bad for you. Do you 

      want ………. for dinner?

……对你有坏处。你晚餐想要……？

A:  Okay. I like ………., too.

好吧，我也喜欢……

B:  ……… is/are good for you. 

……对你有好处。