YOU SAID:

If Jack was astonished by their fervor he did not show it

INTO JAPANESE

彼は夕べのパーティーに出席しなかった。

BACK INTO ENGLISH

He did not show up at the party last night.

INTO JAPANESE

彼は夕べのパーティーに出席しなかった。

BACK INTO ENGLISH

He did not show up at the party last night.