Example sentences
Cette théorie est très intéressante.
This theory is very interesting.
Le professeur a expliqué la théorie hier.
The teacher explained the theory yesterday.
Nous verrons la théorie avant la pratique demain.
We will look at the theory before the practice tomorrow.
Note
The article is part of the word: la théorie. That way you learn the gender with it.
Remember la théorie for good. ripiti brings the word back just before you forget it, with these sentences. Free, no account needed, works offline.
practise la théorie in ripiti