Introduction: I grew up In Puerto Rico, and lived in Barcelona. I have studied French most of my adult life. I know how to teach languages and to learn them.
I understand the grammar and the tenses and their importance in mastering Spanish.
Many American students do not understand grammar in English, but I can explain it to them and it is helpful. This is especially true with the use of the subjunctive, which is used a lot in romance languages, but not so much in English.