作业帮为什么不能用can't
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：2024/04/28 05:13:55
为什么不能用can't
without gravity,we couldn't walk on the ground as freely as we do now
变为without gravity,we can't walk on the ground as freely as we do now
without gravity,we couldn't walk on the ground as freely as we do now
变为without gravity,we can't walk on the ground as freely as we do now
这个就是虚拟语气.
没有重力,我们就不可能象我们现在那样在地上走.
其实,重力是存在的.所以,用过去式表示虚拟的.
又如：
If I were you,I would leave.
如果我是你,我就走.
（我不可能是你的：虚拟的）
没有重力,我们就不可能象我们现在那样在地上走.
其实,重力是存在的.所以,用过去式表示虚拟的.
又如：
If I were you,I would leave.
如果我是你,我就走.
（我不可能是你的：虚拟的）
为什么不能用can't
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