I meet a old friend who works in a school.
可以寫成->I meet a old friend working in a school.
以上的works 是present tense
如果是過去式可否如此縮寫?
eg.He loved the girl who worked in a school.
可否寫成->He loved the working in a school.
還有:
eg.John shouted at a boy who was a Japanese.
可否寫成->John shouted at a boy bing a Japanese.