General:
* J'ai beaucoup de... (Formal and informal) - This is the most common and versatile phrase.
* Example: J'ai beaucoup de livres. (I have a lot of books.)
Emphasis on Quantity:
* J'ai énormément de... (Formal and informal) - This emphasizes a large quantity.
* Example: J'ai énormément de travail. (I have a lot of work.)
* J'ai plein de... (Informal) - This means "I have lots of..." and suggests a large number.
* Example: J'ai plein d'amis. (I have lots of friends.)
Emphasis on Difficulty/Problems:
* J'ai beaucoup à faire. (Formal and informal) - This means "I have a lot to do."
* Example: J'ai beaucoup à faire aujourd'hui. (I have a lot to do today.)
Specific things:
* J'ai des tonnes de... (Informal) - This is a more playful way to say "I have a lot of..."
* Example: J'ai des tonnes de devoirs. (I have tons of homework.)
Remember to choose the phrase that best fits the context of your sentence.