〈限制性定語從句〉The film which was derected by Xie Jing is worth seeing.
〈過去分詞短語作定語〉Th film derected by Xie Jing is worth seeing.
〈非限制性定語從句〉The film is worth seeing, which was derected by Xie Jing .
此外, be worth 還可以用不定式的被動語態 to be seen 取代 seeing,意思不變。