Are these sentences grammatically correct?

1. On peut s'amuser quand on est vieil.

2. Il est vieil, alors il a moins de choses à faire.

I'll send this to our French expert, SraJMcGin.

The word "vieil" is used before a vowel or silent "h." It's best to use "vieux" in both sentences.

I'll flag this and come back later to see if y ou have additional questions.

Sra (aka Mme)

1. The sentence "On peut s'amuser quand on est vieil" is not grammatically correct. The correct form would be "On peut s'amuser quand on est vieux." The adjective "vieil" should be changed to the masculine form "vieux" to agree with the masculine subject pronoun "on."

To determine the correct form, you can follow these steps:

Step 1: Identify the noun that the adjective is modifying. In this case, the noun is a masculine subject pronoun "on."
Step 2: Determine the gender and number of the noun. The masculine subject pronoun "on" is singular.
Step 3: Make the adjective agree in gender and number with the noun. The masculine singular form of the adjective "vieil" should be changed to "vieux."

2. The sentence "Il est vieil, alors il a moins de choses à faire" is grammatically correct. The adjective "vieil" is used correctly here to describe the masculine singular subject pronoun "il."

To determine the correctness of this sentence, you can follow these steps:

Step 1: Identify the noun that the adjective is modifying. In this case, the noun is a masculine singular subject pronoun "il."
Step 2: Determine the gender and number of the noun. The masculine singular subject pronoun "il" is singular.
Step 3: Make sure the adjective agrees in gender and number with the noun. The masculine singular form of the adjective "vieil" is used correctly here.

Overall, the correct sentences would be:

1. On peut s'amuser quand on est vieux.
2. Il est vieil, alors il a moins de choses à faire.