Sentence examples for age when from inspiring English sources

"age when" is not a proper grammatical construction in written English.
It is missing necessary parts of speech, such as a verb or a noun. Instead, you could use the phrase "age at which" to refer to a specific age or point in time. For example: - The age at which children start school varies by country. - What is the age at which people can legally vote in your country? Or, you could rephrase the sentence with a more specific verb, such as "age at the time when." For example: - He was only five years old at the time when he learned to ride a bike. - The age at the time when they got married was very young by today's standards.