还是一道高一英语题What should we do to prevent thoes accidents happening in the mines is (try to improve) the miners' working environment.为什么只能填try,不能加ing?不是在be动词后的嘛?疑问……

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还是一道高一英语题What should we do to prevent thoes accidents happening in the mines is (try to improve) the miners' working environment.为什么只能填try,不能加ing?不是在be动词后的嘛?疑问……
还是一道高一英语题
What should we do to prevent thoes accidents happening in the mines is (try to improve) the miners' working environment.
为什么只能填try,不能加ing?不是在be动词后的嘛?疑问……

还是一道高一英语题What should we do to prevent thoes accidents happening in the mines is (try to improve) the miners' working environment.为什么只能填try,不能加ing?不是在be动词后的嘛?疑问……
be+doing构成进行时态.而这里是不定式跟在系动词后面作表语、表示将要完成的某一具体动作、to被省略.What should we do to prevent those accidents happening in the mines是主语从句、为了防止那样的事故发生在矿井我们应该做的是努力改善矿工的工作环境.

本来应该to try,带由于前面有do,将to省略

要看清句子的组成部分,其实to prevent thoes accidents happening in the mines 是插入语,先删去,而try to improve是What should we do 的部分.并不是所有be动词后都加-ING,也有TO的,或是原形.要看具体句子,不能一概而论.