Question

Which sentence contains an introductory clause?

My mom and I, along with some neighbors, gazed at the star-studded show.

As the shower continued to escalate, dozens of meteors arched across the sky.

The meteors illuminated the darkness and lit up the nighttime sky.

With one final streak of light, the last of the shooting stars disappeared.

Answer 1

As the shower continued to escalate, dozens of meteors arched across the sky.

As the shower continued to escalate is an introductory dependent clause. It has a subject (shower) and a verb (continued), but it does not make sense on its own as an independent clause would.