be worried about 与be concerned about 的区别... The child's mother was _____ about his safety when he didn't come back from school at the usual time. A afraid B worried C concerned D careful 选什么啊 ,区别呢..
e worried about 是系动词+形容词表语+介词结构,系表结构侧重一种状态,这里表示担心的状态 be concened about 更强调的是一种关注,关心某事 eg.Be concerned about enviroment. 选 C 由于空格后是 about ,则直接排除A和D be afraid /careful of 而此题强调的是一种关注,关心某事 所以选C