Here's a breakdown:
* 是 (shì): means "is" or "it is"
* 太 (tài): means "too" or "extremely"
* 好 (hǎo): means "good"
Example:
* 你做的饭菜是太好! (Nǐ zuò de fàncài shì tài hǎo!) - Your cooking is too good!
Note: It often conveys a sense of enthusiasm and appreciation, emphasizing the positive quality of something.