英文形容詞 問題,高手請解答~

Avatar is set in the year 2154 and tells the story of how man's mining activities
on a distant planet threaten the native Na'vi people.

問題1.
man's mining activities 的man's 加S 是不是為了當名詞才加上S?!

問題2.
threaten 前面有省略形容詞子句 that are 之類的嗎?
是不是因為把形容詞子句剪掉剩threaten ㄧ個單子
當形容詞所以放前面嘛?!
2 answers 2