分类：教育/科学-外语学习-英语考试
问题：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
回答：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