YOU SAID:

I haven't gotten to attend a gathering in ages.

INTO JAPANESE

私は長い間集会に出席することができませんでした。

BACK INTO ENGLISH

I haven't been able to attend meetings for a long time.

INTO JAPANESE

長い間会議に出席できませんでした。

BACK INTO ENGLISH

I couldn't attend the meeting for a long time.

INTO JAPANESE

私は長い間会議に出席できませんでした。

BACK INTO ENGLISH

I couldn't attend the meeting for a long time.