YOU SAID:

It had taken some time for him to work up the nerve to do it.

INTO JAPANESE

彼がそれを行うために神経を働かけるために時間がかかりました。

BACK INTO ENGLISH

It took him a while to work his nerves to do it.

INTO JAPANESE

彼はそれをするために彼の神経を働かすのにしばらく時間がかかりました。

BACK INTO ENGLISH

It took him a while to work his nerves to do it.