✔ 最佳答案
其實呢個係 relative clause。
for example, The girl who wears the glasses is my girlfriend.
意指: 戴著眼鏡的女仔係我的女朋友。
原本句子: The girl wears the glasses. She is my girlfriend.
relative clause, (我認為), 其實係將兩個句子變成一個句子。面其中一句其實係用來形容個 subject。用我個 example 為例, wears the glasses 係形容個女仔嘅特徵，主要，我想講嘅係佢係我女朋友。所以 wears the glasses 即係補充 information。
而你所見到嘅 3 句，其實都係一樣，只不過我哋睇唔慣，因為將兩句變一句嘅原因，有時個拆句會有啲詞語會跟一個 preposition, 如果想作文唔好太單調，或者你想強調個樣野嘅重要性，就會拆開。
1) citing a case in which a woman snatched a phone from a pervert.
原句: In citing a case, a woman snatched a phone from a pervert.
2) limits the uses to which land can be put
原句: The land can be put to limit the uses. <- 兩個 verbs, 用 "to" 隔開 -> to-infinitive.
3) The ad may have been fake, but what of the actual car in the photos and its owner?
what of <-- 如何, 又點嘅意思。
呢句，我唔太肯定，因為係只係卑一句我，我要判斷下佢個真正解釋，但呢句應該同 relative clause 冇關，純粹係真係 what of 嘅用法。
for instance, Today？But what of yesterday？--> 今天嗎？昨天又如何呢？
我估應該係咁解，hope I can help you.
