careful与carefully的用法
问题描述：
careful与carefully的用法
None of the students are ( ) to work on the math problem.
为什么句中用careful enough而不用carefully enough?
答
简单说来,因为句子中用的是be动词,be动词后跟形容词, 动词后跟副词在这里句中用的be动词“are”,所以后面跟形容词careful enough如果要用carefully enough的话,这句话要改写成 None of the students can work carefu...