Without the friction between our feet and the ground, we may not be able to walk.
来源 :焚题库 2022-05-10
中单选题Without the friction between our feet and the ground, we may not be able to walk.
A.wouldn’t be
B.were
C.were not
D.can’t be
参考答案：A
答案解析：这句话的意思是：如果没有脚和地之间的摩擦，我们就不能行走。本句属于隐含式虚拟语气。句中without短语相当于一个与现在事实相反的虚拟条件句。在without引导的虚拟语气中，表不与现在事实相反时，谓语动词为would / could /might（not) do something;表示与过去事实相反时，谓语动词结构为would / could /might（not) have done something;表不与将来事实相反时，谓语动词为would/could/might（not) do something。此处与现在事实相反。答案为A。
