一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、having noticed 中哪个

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一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、having noticed 中哪个
一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...
一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、having noticed 中哪个

一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、hav...一道英语选择:The thief stole into the room without _.用noticing、 being noticed、 noticed 、having noticed 中哪个
noticed
这个贼没有被发现的(悄无声息的)潜入了房间
被发现,被动时态,be noticed,加在介词without之后,使用v.ing形式,就是being noticed,但此处可省略being,直接填写noticed即可.

being noticed
这是指小偷没被发现,所以用被动

选B,首先without是介词,介词后面跟doing,其次小偷被发现,所以用被动语态

being noticed

介词后面加-ing结构,又因为是被动语态,所以应该选第二个

noticing 是吧

being noticed是对的。
noticing表示主动;noticed虽然表示被动,但without后面应该跟ing形式,being不可省去;having noticed也是表示主动。只有 being noticed是对的。