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Many things be considered impossible in the past are very co

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/05/22 19:56:05
Many things be considered impossible in the past are very common today,还是Many things considered impossible in the past are very common today为什么,如果是第二句正确的话为什么省略be
这句话的完整形式是
Many things which are considered impossible in the past are very common today,
which are considered impossible in the past 是定语从句,所以which 和 be动词可以省略掉.
如果是这种形式的话Many things be considered impossible in the past are very common today,一句话就有两个动词,一个是“be”一个是“are”是语法错误
再问: 那为什么不是第一句省略了which呢
再答: 因为如果要省略的话要一起省略,不能单独的省一个which, 如果单独省一个which,要把动词变成动名词,即be变成being