Questions & Answers about אתמול הוא היה בבית כל היום.
No. אתמול is a single word that means yesterday.
It only happens to begin with the letters את, but it is not the same word as the direct object marker את.
So here:
- אתמול = yesterday
- not את
- something else
Word by word:
- אתמול = yesterday
- הוא = he
- היה = was
- בבית = at home / in the house
- כל היום = all day / the whole day
So the structure is basically:
- Yesterday
- he
- was
- at home
- all day
- at home
- was
- he
Hebrew usually leaves out to be only in the .