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whose 用完之後成句唔完整？
✗ 你會咁寫
Teenagers, the main users of these platforms, whose emotions will be easily controlled by them.
✓ 應該係
Teenagers, the main users of these platforms, will have their emotions easily controlled by them.
句子結構錯誤 (Sentence fragment)。用咗 relative pronoun「whose」會令原本嘅主句變咗從句，令到成句冇咗主要動詞 (main verb)。
紅筆
點解你會咁寫
呢個通常喺句子寫得長嗰陣出現：加完一個插入語，再想補多個描述，就順手用 whose 接落去，結果主語一直冇等到佢個動詞。寫完長句用一個方法檢查：遮住所有逗號中間嘅嘢，剩返嘅仲係唔係一句完整句？
紅筆
再睇多兩個例子
✗ Students who study hard and who never give up.
✓ Students who study hard never give up.
✗ The policy, which was introduced last year, and caused many complaints.
✓ The policy, which was introduced last year, caused many complaints.
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