语法题提问

题目

语法题提问
There have been little change in the patient’s condition since he was moved to the intensive care unit.
找出错误,并改正,再说明原因.
没有规定一定只有一处错误。还有其他错误吗？

答案

have 改成 has,因为change 不可数的,且让步状语从句中主句现在完成时,从句一般过去时.此题是否只要求找出一处错误?