Questions & Answers about Él levanta la mesa; es muy fuerte.
Since this lesson is about commands, is levanta a 'tú' command here?
No, here it simply means "he lifts" in the regular present tense. While levanta is exactly how you would say "lift!" as a regular affirmative tú command, the pronoun Él (he) shows this is just a descriptive statement. If it were a command, it wouldn't include Él.
Why does Él have an accent mark?
The written accent distinguishes the pronoun él (he) from the masculine article el (the). They sound exactly the same when spoken, but without the accent mark, the sentence would look like it says "the lifts the table," which wouldn't make sense!
Why do we use es instead of está for "is very strong"?
Does fuerte change if the person lifting the table is a woman?
No, it stays exactly the same. Adjectives that end in -e in Spanish (like fuerte, grande, or inteligente) are gender-neutral. They don't change to an -o or -a based on gender. You only change them to add an -s if you are talking about multiple people (fuertes).