il allait comment = how was he?
You can say "Bonjour, comment était ta journée?" in French.
Comment il s'appelle ? means What's his name?
Il allait bien quand je l'ai vu.
Comment est-il? in French means "How is he/it?" in English.
To say "how is he" in French, you would say "comment va-t-il".
"(I) was going for a walk" is "(J')allais me promener" "(He) was going for a walk" is "(Il) allait se promener"
"Il est comment allez-vous" is a grammatically incorrect phrase. "Il est" means "he is" in French, while "comment allez-vous" means "how are you." A correct phrase could be "Comment allez-vous?" which means "How are you?"
"allait-il comment votre jour heir"means nothing. Write: "comment s'est passée votre journée d'hier" or "comment était votre journée d'hier" (informal) and that means "how was your day of yesterday"
Comment va-t-il ?
comment est il allant
How to translated into French is 'comment'. An example sentence is 'Il a demandé comment le faire'. This means 'He asked how to do that'.
"How do you spell it?" in English is Comment s'ecrit-il?in French.