题目内容
11.If all business goes paperless,at least one million tons of paper a year.( )| A. | are saving | B. | will be saved | C. | were saved |
分析 如果所有的商业不再用纸,每年至少一百万吨的纸会被节约.
解答 答案:B.if引导的条件状语从句,遵循主将从现的规则,主句用一般将来时,主语paper是动词save的承受者,故用一般将来时的被动语态will+be+过去分词,故答案是B.
点评 被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.
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