Examples:

• His son has come of age
• A new generation had come of age.
• Over the past fifty years, India's atomic energy programme has come of age.
• It was a great year to come of age fantastic!
• When the new generation come of age, they will spread the seed.
• I shall return from my quest when you come of age.
• But ways of doing so are beginning to come of age.
• The game of professional football has come of age.
• Now you've come of age, you have the right to vote.
• Perhaps in more time you will have come of age.
• She has come of age, so having one or two boyfriends is normal.