情态动词选择题21.--I heard they went skiing in the mountains last w
情态动词选择题2 1.--I heard they went skiing in the mountains last winter. --It ____true because there was little snow there. A.may not be B.won't be C.couldn't be D.mustn't be A和D为什么不对? 2.There were already five people in the car but they managed to take me as well. It_____a comfortable journey. A.can't be B.shouldn't be C.mustn't have been D.couldn't have been 可我原来选的是A,为什么不对呢,不都是表示推测吗
1.首先我们看那个是过去式引导的对话,A.要用 might not be而D这个是过于肯定一般很少用,because there was little snow there根据这个推断出来的常常用could/couldn't be. 2.第2个同样问题,过去式引导的句子,不可能选择A的,而推断的基本上都是用could/couldn't 就是这样,你情态动词还得多去看下,其实不难的...