[文法] become or to become

[stayhome (嗨)]

今天看到了一句話

And how much responsibility do i bear for
her having "become" irrtrievably lost?

我覺得for 讓have 變成 having
但是不懂 having 後面為何是become 不是to become

還是因為 for 之後 的 "having become" 是固定用法？

其實我有點混亂 反正就是不懂為何又having  又 become

感謝各位的解答...

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※ 編輯: stayhome (111.80.132.9), 10/08/2015 18:37:52
推 Tenka: become became become
→ Tenka: This is past participle.
→ kaifrankwind: 因為是從have beome這個過去完成動詞片語變過來的
→ stayhome: 居然沒注意到...太感謝了！