The problem is very difficult .You must think about it careful.这个句子错在哪里?
问题描述：
The problem is very difficult .You must think about it careful.这个句子错在哪里?
可能错的地方在A .is B difficult.C .think about D .careful
为什么列?请说明原因
答
D错.应为carefully,因为要用adv.（副词）来修饰v.（动词或动词词组）.句子修该后应为：You must think about it carefully.此处carefully用来修饰think about.