UC知道the man was observed opening the window中为什么用opening不用open?
来源：百度知道 编辑：UC知道 时间：2024/06/28 04:28:11
observe sb. doing指观察到某人正在做某事
当时男人正在开窗时被发现了，所以用opening
第一，open和the man是主动关系
第二，整句的意思是：男人在他开窗时被人看到了，observed和看这两个动作几乎同时发生
observe sb. doing意思是观察某人正在做某事，这句指有人观察到那个男人正在开窗户，opening表示主动，那个男人开窗的动作正在进行时被观察到的，如果用opened 就是被动的意思了。
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