Comment t'appelles-tu is an informal French equivalent of 'What is your name'. In the word by word translation, the adverb 'comment' means 'how'. The reflexive 'te'* means 'yourself'. The verb 'appelles' means '[you] are calling, call, do call'. The subject pronoun 'tu' means 'you'.
*The reflexive's vowel 'e' drops before the beginning vowel of the following verb. The temporary drop of the letter is indicated by the apostrophe.
It means : What is your mother's name?
Tu as. (informal, but doesn't work when plural: you then have to use 'vous avez', which is the formal OR plural version.)
'we are' is 'nous sommes' in French. It is both very correct and frequently used in casual conversations. The informal way of saying 'we are' that you are thinking about could be 'on est' (literally one is...). This is informal and casually used in everyday language. ex: On est là : we are here
ca va- informal Comment Allez-Vous-Formal
Fun-ghee Not pronounced as fun in English, rather as foun so Basically, foun-ghee
tu
"ça va" is informal, but correct and very widely used by everybody in spoken French.
It means : What is your mother's name?
The English words 'I am fine, thank you' in informal French become Je vais bien merci.
'toi' is 'you' (singular and informal) in French.
Maman
"salut" is the informal greeting used in French as an equivalent of "hi".
The words 'How are you', is informally said in French as 'comment allez-vous'.
'bonjour' or 'salut' (informal)
The informal word for grandfather in French is "papy" or "papi."
T'avais...Tu avais...
It's the informal "you".