选择题Benlooks______,buthedoesthing
looks ______ , but he does things _______. reful,careless refully, carelessly reful, carelessly refully, careless 请详细讲一下好吗
选C look是系动词,相当于“is”（但并不等于，is“是”，已构成事实，而题中意思是“看起来象”）look做“看起来....”讲时是系动词，后面要跟形容词；而carelessly(adv)在这里是修饰does（v）的