【which從句介紹】1、which前面有逗號，逗號前面是個名詞，which就近指代那個名詞 。Tankfield emailed Pea some photos, which did not cheer Pea up.which就近指代photos，定語從句中謂語動詞did not cheer (Pea up)的發出者即從句主語即先行詞photos，是photos沒讓豌豆家屬高興起來 。
2、Tankfield emailed Pea some photos, which Pea did not find interesting.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Pea did not find the photos interesting 。
3、可以看到 ， 上面兩個句子都可以以that為關系代詞改寫，即Tankfield emailed Pea some photos that did not cheer Pea up.)Tankfield emailed Pea some photos that Pea did not find interesting.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語法里算錯 。
