【经典必背】
All things in their being are good for something. 天生我材必有用。
【课文原句】
She says it's good for my health. 她说这对我的健康有好处。
Wearing blue clothes or sleeping in a blue room is good for our mind and body because this colour creates a feeling of harmony. 穿蓝色的衣服或者睡在蓝色的房间里对我们的思维和身体都有好处，因为这种颜色会创造一种感觉上的和谐。
I like vegetables because they are good for me. 我喜欢吃蔬菜，因为它们对我有好处。
【基础知识】
1. be good/bad for...意为“……对……有好（害）处”。这里的for是介词，后接名词、代词，或动名词。
Every food is good for your health if you eat in a right way. 如果你用正确的方法来吃，每一种食物对身体健康都有好处。
Teenagers need to eat breakfast every day. This is good for their body and mind. 青少年需要每天都吃早餐，这对他们的身体和头脑都有好处。
2. be good for与其他几个与good有关的短语的区别。
① be good at...意为“擅长……”，后接名词，动名词，相当于do well in.
Jimmy started painting when he was four years old. When he was six, he was already very good at it. 吉米在4岁的时候就开始画画，当他6岁时，已经非常擅长画画了。
I'd say my strong point is that I'm good at getting to know people. 我的优势是我很擅长于了解人们。
② be good to sb./sth.意为“对……好”。
It's good to study in groups and help each other. 这对于在小组内学习和相互帮助很好。
— Why does everyone like Annie? 为什么每个人都喜欢安妮？
— Because she is often good to others. 因为她经常对其他人都很好。
③ be good with sb.意为“善待某人，和某人相处得好”。
Are you good with children? 你善于和孩子们打交道吗？
As a good nurse, you should be good with patients. 作为一名优秀的护士，你应该和病人相处得好。