Do you like English? Is it a proposition?

Do you like English? This is not a proposition.

Because the concept of proposition is in mathematics, we take declarative sentences that can be expressed in language, symbols or formulas within a certain range and can judge whether it is true or not. So do you like English? This is not a proposition.

The form of a proposition must be a declarative sentence. Correct sentences are called true propositions, and wrong sentences are called false propositions.