ask

ask
enquire/inquire(rather formal)
demand(to make a very strong request for information)
These words all mean to say or write something in the form of a question, in order to get information.

Patterns
・Question
　ask somebody something, ask somebody about something
・Request
ask somebody to do something
・Permission (to request permission to do something)
ask to do something
・Invite
ask somebody to do something
・expect/demand
ask something
ask something of somebody
ask to do something

Phrasal Verbs
・ask after
・ask around
・ask back
・ask for
・ask out