[文法] 請幫我看看這一段文章

[diaber (呆寶N)]

Most of the time , man thinks that everything in the world
we live in should be there. Very often we learn how much
something means to us after it is gone. We thank the experience
and the lessons it teaches us.

想請問：

１．綠色那句的用法和翻譯
２．黃色那句的翻譯　還有ｉｔ　ｉｓ　ｇｏｎｅ的用法
３．藍色ｉｔ是代替了哪個主詞

感謝各位達人　感激不盡

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推 Lovetech:3. it 是指the experience
推 Pmimi:diaber版友這樣解讀也可...
→ Pmimi:但英美人士應該不會這樣寫...
推 Pmimi:若照d版友那樣解讀..句子至少應該寫成
→ Pmimi:We thank experience and the lessons it
→ Pmimi:teaches us.
→ Pmimi:以上為個人淺見 有錯請指正吧 謝謝
推 Lovetech:好像只有我解讀  d板友只有發問已吧^^a
→ Lovetech:個人也覺得it用的怪  不過個人覺得可用
→ Lovetech:which之類的寫法來改