don't forget to close the door if you are the last person to leave?don't forget to close the door if you are the last person leaving?哪一句正确,为什么?关键是解说一下为什么?

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don''tforgettoclosethedoorifyouarethelastpersontoleave?don''tforgettoclosethedoorifyouarethelastperson

don't forget to close the door if you are the last person to leave?don't forget to close the door if you are the last person leaving?哪一句正确,为什么?关键是解说一下为什么?
don't forget to close the door if you are the last person to leave?
don't forget to close the door if you are the last person leaving?
哪一句正确,为什么?关键是解说一下为什么?

don't forget to close the door if you are the last person to leave?don't forget to close the door if you are the last person leaving?哪一句正确,为什么?关键是解说一下为什么?
第一句对,不定式to leave表示将要做的事情,而leaving则表示已经做过的事情.例如,你的句子中的:forget to do sth.(忘了将要做的事)forget doing sth.(忘了过去做过的事)

第一句正确
被序数词修饰的词需用to do 作定语
一般来说都是the first to do sth的句型

第一句正确,if后面跟一般时,是表示还没有发生的时候,Leaving是正在进行时,所以不正确

第一句正确
不定式to leave表示要做的是事情,通常在讲话时还没做;而leaving则表示已经做了。