Learn Hardcore Spanish (Spain): Mi compañera sabe argumentar muy bien y siempre pone ejemplos claros. - My classmate knows how to argue very well and always gives clear examples.

Compañera is the feminine form of compañero. Depending on context, it can mean female classmate, female colleague/coworker, or sometimes female partner. In a sentence like this, female colleague or female classmate is usually the safest guess.

Why is it mi and not mí?

Mi without an accent means my. Mí with an accent means me, usually after a preposition, as in para mí or sin mí. Here it has to be mi compañera because it is a possessive: my colleague/classmate.

Why is there no ella in the sentence?

Spanish often leaves out subject pronouns when the subject is already clear. Since mi compañera is stated explicitly, adding ella would usually be unnecessary. You would only add it for emphasis or contrast.

What does sabe argumentar mean exactly?

Saber + infinitive means to know how to do something. So sabe argumentar means she knows how to argue / make a case well. It focuses on ability or skill.

Could I also say ?