i'm not sure whether i have locked the door.whether引导的是什么从句。 they were glad o

I'm not sure whether I have locked the door.
whether 引导了一个宾语从句
They were glad of the examination being over.
being over 是examination 的宾语补足语
You'll save time not waiting for the elevator.
You will save time 是一个主谓宾的结构，not waiting for the elevator是现在分词短语作方式状语，说明”如何节省时间“追问

being over 是分词吗。另外，wehether是谁的宾语。

追答

being over 是一个现在分词结构，属于“非谓语动词”语法范畴，这里做的是examination的宾语补足语

be sure （that） ... 引导的从句是宾语从句，这里be sure 的宾语从句由whether来引导

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