be good at 是擅长于做某事
be good with是和某人相处的好,相当于get on well with sb.
get along well with sb.
be good at 是"擅长于做某事"=do well in
be good with是“和某人相处的好”,=get along well with sb。
祝你进步!
be good at 是说“干...的技术好”
比如He is good at painting. 他画画很好
be good with 是“擅长于和……打交道”
一般是讲人际关系的或者和什么什么沟通
比如She is good with kids. 她和孩子相处的很好
be good at :擅长于(擅长于某方面)
be good with :良好的(比如良好的习惯)