parlez-vous français means 'do you speak French' in French.
(vous) parlez means (you) speak in French.
It is french and it means "do you understand/speak"
This is a question: "Do you speak French?"
parlez plus fort means 'speak up' in French.
It's parlez vous francais? Do you speak French.
The statement 'Parlez en francais' means Speak in French. In the word-by-word translation, the verb 'parlez' means '[you] speak'. The preposition 'en' means 'in'. The noun 'francais' means 'French'.
The statement 'Parlez en francais' means Speak in French. In the word-by-word translation, the verb 'parlez' means '[you] speak'. The preposition 'en' means 'in'. The noun 'francais' means 'French'.
Parlez-vous le français means "do you speak French?". (note: French speakers are likely to often drop the 'le')
If that is an attempt at 'Parlez-vous francais' you might want to stick to english. :) Parlez-vous francais does mean 'Do you speak french?'
The sentence 'Alors vous parlez francais' means So you speak French. In the word-by-word translation, the adverb 'alors' means 'in that case, so'. The personal pronoun 'vous' means 'you'. The verb 'parlez' means '[you] speak'. And the noun 'francais' means 'French'.
"Parlez-vous" means "do you speak" in English, specifically in French. It is typically used to start a conversation or inquire about someone's language abilities.
Canadian is not a language. Do you mean to ask if they can speak French Canadian? If so: Est-ce que vous parlez francais-canadien?