look forward to doing中,to是介词?Ving相当于介词?

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look forward to doing中,to是介词?Ving相当于介词?
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look forward to doing中,to是介词?Ving相当于介词?
look forward to doing中,to是介词?Ving相当于介词?

look forward to doing中,to是介词?Ving相当于介词?
to是介词
to something
或者
to doing something

to是介词

to是介词;v+ing是动名词