Questions & Answers about هو يحجز موعدا اليوم.
In Arabic, the verb يحجز already includes the meaning he books / he is booking, so the sentence could simply be:
يحجز موعدًا اليوم.
Adding هو is usually for one of these reasons:
- emphasis: He is booking an appointment today.
- clarity: to make the subject extra clear
- contrast: He is booking an appointment today, not someone else
So هو is not strictly necessary, but it is perfectly natural.
يحجز is in the present tense / imperfect.
In MSA, this form can mean different things depending on context, including:
- he books
- he is booking
- he will book
In this sentence, because of اليوم (today), the most natural meaning is something like:
- He is booking an appointment today or
- He books an appointment today
Arabic does not separate simple present and present progressive as strictly as English does.