1、which前面有逗號,逗號前面是個名詞,which就近指代那個名詞。TankfieldemailedPeasomephotos,whichdidnotcheerPeaup.which就近指代photos,定語從句中謂語動詞didnotcheer(Peaup)的發出者即從句主語即先行詞photos,是photos沒讓豌豆傢屬高興起來。
2、TankfieldemailedPeasomephotos,whichPeadidnotfindinteresting.which就近指代photos,photos是定語從句中的賓語,把定語從句還原成一個完整句就是Peadidnotfindthephotosinteresting。
3、可以看到,上面兩個句子都可以以that為關系代詞改寫,即TankfieldemailedPeasomephotosthatdidnotcheerPeaup.)TankfieldemailedPeasomephotosthatPeadidnotfindinteresting.改寫與原版區別在哪兒,就在一個逗號。which前面是名詞,名詞和which之間沒逗號的,在GMAT語法裡算錯。