標籤: 非限定性子句

• Formosan clouded leopards, which, as their name suggests, are native to Taiwan, are extinct. (台灣雲豹 － 顧名思義，為台灣土生的動物 － 已滅絕) (正)
• Formosan clouded leopards which, as their name suggests, are native to Taiwan are extinct. (誤)

解說：關係子句 “which are native to Taiwan” 係 Formosan clouded leopards 的額外補充資料，須為非限定性子句 (non-restrictive clause)，亦即其前後都要有逗點。