______(如果没有脚和地面之间的磨擦), people would in no way be able to walk.If there was no fr

游客2023-09-16 28

问题 ______(如果没有脚和地面之间的磨擦), people would in no way be able to walk.

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答案 If there was no friction between their feet and the ground/Without the friction between their feet and the ground

解析本题考查虚拟条件的表达或对without用法的掌握。由主句中谓语would do的形式及句子的含义可知，括号中的句子表达的是一种虚拟的条件，而表示对现在事实的虚拟，谓语动词应采用一般过去时。另外该句也可以直接用“without(如果不)+名词”来表达。

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