()to your hometown twice,iknow that it is reallya beautiful place 为什么用Having been 不用 To have been

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()toyourhometowntwice,iknowthatitisreallyabeautifulplace为什么用Havingbeen不用Tohavebeen()toyourhometowntw

()to your hometown twice,iknow that it is reallya beautiful place 为什么用Having been 不用 To have been
()to your hometown twice,iknow that it is really
a beautiful place 为什么用Having been 不用 To have been

()to your hometown twice,iknow that it is reallya beautiful place 为什么用Having been 不用 To have been
动词ing形式做主语表示主动,因为后面的主语是I,前后主语一致应该是ing形式.动词不定时做主语表被动和将来,所以不适合.

动名词形式作主语