Question 1

Can I use tandis que instead of alors que in this sentence?

Accepted Answer

Yes, absolutely! Both mean "whereas" or "while" when expressing a contrast. You could just as easily say tandis que ceux-là sont têtus. Alors que is slightly more common in everyday spoken French, but they are fully interchangeable here.

Question 2

If alors que can translate to "while," could I use pendant que instead?

Accepted Answer

Not here. Pendant que means "while" only in terms of time (two actions happening at the exact same moment). Since this sentence is comparing two different personalities ("whereas"), you have to use a conjunction of contrast like alors que or tandis que.

Question 3

Why does the sentence use ces for "these dogs" but ceux-là for "those"?

Accepted Answer

Ces is an adjective, meaning it must sit right next to a noun (ces chiens). Ceux-là is a pronoun meaning "those ones," which stands on its own so you don't have to repeat the word "dogs." The -là part emphasizes "those over there" to create a clear contrast with the first group.

Question 4

Since both adjectives refer to plural dogs, shouldn't affectueux have an "s" at the end like têtus?

Accepted Answer

Masculine adjectives that already end in -x (or -s) in their singular form don't change when they become plural. A single affectionate dog is un chien affectueux, and multiple dogs are also affectueux. For a regular adjective like têtu (stubborn), you add the standard plural -s to get têtus.

Ces chiens sont affectueux, alors que ceux-là sont têtus.

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