I have temporarily put my books on the floor句中为什么要用have ,have 起什么作用?

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• i have too many rules in my house.句中too many 起到什么作用,为什么要用too many.
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• To make matters worse,the room is rather small,so I have temporarily put my books on the floor.
• I have temporarily put my books on the floor句中为什么要用have ,have 起什么作用?
• I will not believe you unless I have seen it with my own eyes.此句中的从句为什么要用现在完成时
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