一本书上有be anxious at,解释为对……感到不安.但词典找不到这个用法.请问be anxious at存在吗?

一本书上有be anxious at,解释为对……感到不安.但词典找不到这个用法.请问be anxious at存在吗? be anxious for 还是be anxious about be anxious to do be anxious to be anxious to do和be anxious doing有什么区别? anxious about 和 anxious to do 前面有be动词吗?能分别举个例子吗? be anxious for sth.= be anxious about sth. be anxious about sb,be anxious for sth 还是非得要be anxious about 请问mad用法……有be mad at sb./sth be mad with sb/sth be mad about "be anxious about /to do sth." 对……感到吃惊为什么是be surprised at 不是be surprised with? 高一英语英汉互译英译汉1 be eager to do sth._____________ 2 be anxious t