[文法] nothing but

[ambrosio (...)]

I could do nothing but let go.

There was nothing I could do but to let go.

請問這兩句這樣寫文法正確嗎?

如果是的話，為什麼一句but後用原形，一句加to

謝謝

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→ kaifrankwind: I could [do nothing] but [let go] 動詞片語對應動
→ kaifrankwind: 應動詞片語; There was [nothing I could do] but
→ kaifrankwind: [to let go] 前面是名詞片語 後面得對應能有同樣功
→ kaifrankwind: 能的不定詞(或動名詞, probably)
→ ambrosio: 非常感謝