a period of about four weeksI should try to finish my novel over the next few months.
Three months passed and we didn’t hear a word from him.
for a month: My parents were here for a month last year.
in a month’s time: They’re getting married in a month’s time.
a month’s worth: The doctor has given him a month’s worth of pills.
the past/previous month: We’ve hardly seen each other over the past month.
a month from: I’ll be leaving a month from today.