题目内容
19．She always does her homework _______ than her brother．（ ）| A． | more careful | B． | careful | C． | carefully | D． | more carefully |
分析 她做作业总是比他弟弟认真．
解答 答案：D 根据关键词than可知，这是"她"和"她的弟弟"两者之间的比较，应该用比较级形式；又根据副词修饰动词的原则，此处应该是副词carefully比较级形式more carefully修饰动词does，意思是"更仔细"，故选D．
点评 判断形容词或副词的比较级和最高级，主要是看几者之间的比较．两者之间用比较级，三者或三者以上比较用最高级形式．本题是二者之间的比较．注意副词修饰动词的原则．
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