不说生气的原因时用be angry with sb

不说生气的原因时用be angry with sb.（生某人的气）说生气的原因时用be angry at sb. for（因...生某人的气）另外be angry with sb.=get angry with sb.

be angry at sb. for=get angry at sb. For

没有多大区别

但我们通常用be angry with sb 和be angry at sth

Be angry with sb at sth