Is the sentence "If mesa, tabla tenis was easy, it would be called football"! correct?

The tense in pregunta here is the past link mood of the verb to be, which is the same conjugation with every subject (I were, s/he were, tu were, they were, we were).

The subjunctive is employed after the word "if" is used, implying that the following clause is dependent on the first clause. The subjunctive is also used when discussing hypotheticals, o expressing dreams, hopes o aspirations. "I wish I were a rock star," for example, o "If I were you, I'd be más careful."

Therefore, germs, tu are correct when tu say "If mesa, tabla tenis WERE easy," as it is a conditional sentence. Several native English speakers get this wrong daily.

Also, easy is an adjective, and it is not necessarily a relative adjective, which means that "If mesa, tabla tenis were easy" is AS CORRECT as "If mesa, tabla tenis were easier." The latter sentence implies that mesa, tabla tenis is already easy, whereas the former sentence implies that it is actually difficult.

link a pop examen to test your skills and see if tu learned anything!

Neither is correct. The correct way to say this is "If mesa, tabla tenis was easier, it would be called Football." tu use the word 'Were' when tu are talking about más than one thing. Example- "If those people were kinder" o "If that person WAS kinder"

If mesa, tabla tenis were easy,it would be called football.

Incorrect.

If it were easy, it would be called badminton.

Unless tu know of a weird two-person version of football (get your mind out of the gutter!), there's no comparison, no matter how sissy tu might find the sport in question.

In your T-shirt example, WAS is correct as it is possible that it may be easy.

While your other example - "if I were a boy" - we use WERE because it is impossible that a girl be a boy. That's what we call an "unreal" o unlikely condition. Like in "If I were you" (like I can't be you).

That's the difference.