The picture 【hanging】 on the wall is painted by my nephew
如果用【having done和having been done】表示这幅画【已经挂过和已经被挂过】在墙上,人们还是【不知道哪幅画】是我的侄子画的.这样的语言就无法进行交流,你说是吗?
The picture 【hanging】 on the wall is painted by my nephew
= The picture 【which is hanging】 on the wall is painted by my nephew.
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