Three ways to compare
French never adds -er to the adjective (tall → taller). A small word goes in front of it instead, and que follows it. This one word translates both than and as.
Cette voiture est plus chère que l'autre.
This car is more expensive than the other one.
Ce livre est moins intéressant que l'autre.
This book is less interesting than the other one.
Ce film est aussi bon que le premier.
This film is as good as the first one.
Agreement and adverbs
The adjective still agrees with the noun it describes in gender and number, which English adjectives never do: She is taller is Elle est plus grande. The words plus, moins and aussi never change.
Elle est plus grande que moi.
She is taller than me.
Ils sont moins grands que nous.
They are less tall than us.
The same three words also compare adverbs. Adverbs never change.
Il parle plus vite que moi.
He speaks faster than me.
Elle arrive aussi tôt que nous.
She arrives as early as us.
Comparing nouns
Before a noun, use plus de, moins de or autant de (as much / as many), then que. The de is required (d' before a vowel), and aussi does not exist here.
Il a plus d'argent que moi.
He has more money than me.
Elle a moins de temps que nous.
She has less time than us.
J'ai autant d'amis que toi.
I have as many friends as you.
Before a number, more than is plus de with no que: more than twenty is plus de vingt.
Il y a plus de vingt personnes.
There are more than twenty people.
Comparing verbs
After a verb, use plus, moins or autant (as much), then que. There is no de here.
Il mange plus que moi.
He eats more than me.
Elle dort moins que son frère.
She sleeps less than her brother.
Je travaille autant que toi.
I work as much as you.
