Let's learn how to negate sentences in French using these examples:

Je suis toujours en retard.
To negate this sentence, we use "ne" before the verb "suis" and "jamais" after it.
So, it becomes: Je ne suis jamais en retard. (I am never late.)

J'ai plusieurs amis.
Here, we use "n'" before the verb "ai" and "aucun" after it.
So, it becomes: Je n'ai aucun ami. (I have no friends.)

Il y a quelque chose.
We use "n'y" before the verb "a" and "rien" after it.
Thus, it transforms into: Il n'y a rien. (There is nothing.)

Il y a quelqu'un.
Similar to the previous one, we use "n'y" before the verb "a" and "personne" after it.
Hence, it becomes: Il n'y a personne. (There is nobody.)

Je vais quelque part.
Here, we use "ne" before the verb "vais" and "nulle part" after it.
Therefore, it changes to: Je ne vais nulle part. (I am not going anywhere.)

Il y a encore du beurre.
We use "n'y" before the verb "a" and "plus" after it.
So, it becomes: Il n'y a plus de beurre. (There is no more butter.)

Il est déjà arrivé.
In this sentence, we use "n'est pas" to negate the verb "est" and "encore" before "arrivé".
Thus, it turns into: Il n'est pas encore arrivé. (He has not arrived yet.)