Questions & Answers about היא מסבירה טוב, ולכן אני מבין.
Because the subject is היא meaning she. In Hebrew present tense, the verb-like form agrees with the subject’s gender and number.
- מסביר = masculine singular
- מסבירה = feminine singular
So with היא, you use מסבירה.
It can sometimes be left out, but here it helps make the person clear.
A key difference from English is that Hebrew present-tense forms usually show gender and number, but not person. So מסבירה by itself could mean:
- she explains
- you explain if speaking to one female
- I explain if the speaker is female
Because of that, היא is very useful for clarity.
It is the Hebrew present tense form. In many cases, the same form can mean either:
- she explains
- she is explaining
Hebrew does not normally make the same sharp distinction English does between simple present and present progressive in this kind of sentence. The context tells you which is meant.