See to it that all the light (are) turned off before you leave.为什么写are?为什么 should be不行.
问题描述：
See to it that all the light (are) turned off before you leave.为什么写are?为什么 should be不行.
答
这叙述的是真实的事，所以不用would（应该），你带进去翻译一下，看一看通不通就行了。
答
这是祈使语气句
答
See to it that all the light (are) turned off before you leaveSee to it留意必定做…that 定从it=all the light (are) turned off before you leave all the light 所有的灯 turn off 关闭before you leave在你...
答
这是陈述真实语气 不是虚拟语气。只是要求 see to it that此刻等于 make sure that 你干嘛用虚拟呢~~