As soon as you arrive what sentence structure is this?

The sentence "As soon as you arrive" is a dependent clause. It's a group of words that contains a subject ("you") and a verb ("arrive") but cannot stand alone as a complete sentence. It needs an independent clause to complete the thought.

Here are some examples of how to use this dependent clause:

* As soon as you arrive, we can start dinner. (Complete sentence with an independent clause)

* I'll call you as soon as you arrive. (Complete sentence with an independent clause)

* Let me know as soon as you arrive. (Complete sentence with an independent clause)

It's important to note that this type of dependent clause is known as an adverbial clause because it functions as an adverb, modifying the verb in the main clause by indicating time.