题目内容
2.If we ____ now to protect the environment,we'll live to regret it.( )A. | hadn't acted | B. | haven't acted | C. | don't act | D. | won't act |
分析 句意为:如果我们现在不采取行动来保护环境,我们将来会后悔的.
解答 答案:C 句子成分分析:if引导条件状语从句,act为从句中谓语动词.逗号后为主句,live为主句谓语动词,to protect和to regret是非谓语动词做状语.
根据if主句中的时态是一般将来时态,可知从句应使用一般现在时态,且有now作为现在时态的标志词,所以选择C.
点评 一般在时间状语从句中,用主将从现的规则,也就是,主句是一般将来时态,从句一般用一般现在时态,或相关的时态.
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