When Vince was five years old his sister was born.
Explanation:
An adverb is a word that modifies an adjective, a verb, a group or words or another adverb. They give a description of when, where, in what manner, how and to what extent something is done. There are different types of adverbs:
Adverbs of manner: they give information about how an action is done. Some examples are slowly, quietly, carefully, easily, etc.
Adverbs of place: they give information about where the action took place. Some examples are here, there, above, far, behind, etc.
Adverbs of frequency: they give information about how often something occurs. Some examples are never, always, sometimes, usually, frequently, etc.
Adverbs of time: they give information about when something occurs. Some examples are last year, today, tomorrow, a month ago, last week, now, etc.
Adverbs of purpose: they give information about the reason why something happens. Some examples are because, so that, due to, etc.
When in the sentence -<u>When Vince was five tears old his sister was born</u>- is an adverb of time. it gives information about what time his sister was born, saying that it was when his brother was 5.
<span>The tone of the letter is too informal and lacks details needed for a good resolution. Hope this helps! Please let me know if I'm wrong :)</span>
