YOU SAID:

hasn't wasn't isn't couldn't nor wouldn't shouldn't can't not hadn't cannot don't

INTO JAPANESE

できなかった できなかった できなかった できなかった できなかった できなかった

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I couldn't I couldn't I couldn't I couldn't I couldn't I couldn't do it

INTO JAPANESE

できませんでしたできませんでしたできませんでした

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I couldn't I couldn't I couldn't I couldn't

INTO JAPANESE

できませんでしたできませんでした

BACK INTO ENGLISH

I couldn't I couldn't

INTO JAPANESE

できませんでした

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I could not do it

INTO JAPANESE

できなかった

BACK INTO ENGLISH

could not

INTO JAPANESE

できなかった

BACK INTO ENGLISH

could not