作业帮【非谓语选择题】（）sadly,the little boy raised his head and had the tears（）down on purpose.A.Seen to cry；fallB.To be seen crying；fallingC.Seen crying；fallingD.To be seen to cry；fallraised his head 但是,①To be表示的不是
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【非谓语选择题】（）sadly,the little boy raised his head and had the tears（）down on purpose.A.Seen to cry；fallB.To be seen crying；fallingC.Seen crying；fallingD.To be seen to cry；fallraised his head 但是,①To be表示的不是
【非谓语选择题】（）sadly,the little boy raised his head and had the tears（）down on purpose.
A.Seen to cry；fall
B.To be seen crying；falling
C.Seen crying；falling
D.To be seen to cry；fall
raised his head
但是,①To be表示的不是将来时么?可这件事情是过去式了啊.②To be seen crying和To be seen to cry有什么区别?这和see sb.doing sth....see sb.to do sth.有什么区别?
【非谓语选择题】（）sadly,the little boy raised his head and had the tears（）down on purpose.A.Seen to cry；fallB.To be seen crying；fallingC.Seen crying；fallingD.To be seen to cry；fallraised his head 但是,①To be表示的不是
动词不定式除了表示将来的动作 还有一个重要作用就是：表示目的.
翻译下句子就更清晰了：为了让自己看起来哭的很伤心,这个小男孩抬起头并且故意让眼泪流下来.
see sb.doing sth....see sb.to do sth.有什么区别?
see sb doing 看见某人正在做什么,强调动作正在进行.
see sb do 看见事情的整个经过或者结果,强调事情完成了.
be seen crying和 be seen to cry只不过是 see sb doing 和 see sb to do 的被动语态形式.前面的to 是题目中需要 ,表目的.跟被动式没关系.
而这个题目的选B而不选D的关键就在于动词不定式to,小男孩为了看起来【正】哭的伤心,
是要让大家看见他这个哭的伤心动作正在发生的,而不是只是让大家知道个结果
doing 是进行时态 to do 是看到的全过程
（1）be seen 是被动语态，to 表示目的状语（2）To be seen crying 表示被看见正在哭，而To be senn to cry,表示将要哭了，但是还没有哭出来。一个是被动语态，一个是陈述句语序