牙好胃口就好用英文怎么说

The teeth good appetite is good.
牙齿一般都应该用复数，因为好多人都不是只有一颗牙齿的。
不过如果真的有一颗或没有牙齿的用就可以用tooth

healthy teeth give you good appetite

good teeth, good appetite.

Good tooth work up an appetite.

Tooth good, the appetite is good.

Excellent teeth for terrific meals