YOU SAID:
You should really be doing your work.
INTO JAPANESE
あなたは本当にあなたの仕事をしているはずです。
BACK INTO ENGLISH
You really should be doing your job.
INTO JAPANESE
あなたは本当にあなたの仕事をしているべきです。
BACK INTO ENGLISH
You really should be doing your job.
That didn't even make that much sense in English.