YOU SAID:

But why do I have to say it, if they aren't?

INTO JAPANESE

しかし、そうでない場合に、それを言う必要する理由は?

BACK INTO ENGLISH

I have, however, so if it says why?

INTO JAPANESE

私はある、しかし、そう言う理由なら?

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I would, however, say why?

INTO JAPANESE

理由を言うだろう、ただし、私ですか。

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Will tell you why, but I do.

INTO JAPANESE

理由を言うが、私は行います。

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I do have to say why.

INTO JAPANESE

理由を言うんです。

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I'd say why.

INTO JAPANESE

私は理由を言うでしょう。

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I say why?

INTO JAPANESE

私は理由を言うか。

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Do I say the reason?

INTO JAPANESE

理由を言いますか？

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Do you say the reason?

INTO JAPANESE

あなたはその理由を言いますか？

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Do you say the reason?