Which sentence is a complex sentence that uses a subordinate conjunction? Select all that apply.

1. Don't join the team unless you are willing to work hard.

2. It's your turn to play the game.

3. He bought a new backpack, and he walked home.

4. I won't see a movie until I've finished reading this book.

5. Juliana loves to tap her toe while she listens to music.

A complex sentence has a main clause and a subordinating clause. The subordinating clause is generally introduced with a subordinating conjuction. This links the two clauses. The complex sentences that use a subordinationg conjunction are the following : (the underlined clauses are the subordinating clauses and the words in bold type are the subordinate conjunction).

Don't join the team unless you are willing to work hard. I won't see a movie until I've finished reading this book. Juliana loves to tap her toe while she listens to music.

There are three complex sentences that use subordinating conjunctions:

1. Don't join the team unless you are willing to work hard.

4. I won't see a movie until I've finished reading this book.

5. Juliana loves to tap her toe while she listens to music.

A complex sentence is a sentence that is made up of an independent clause and one or more dependent clauses. While an independent clause can stand by itself, a dependent clause, which is introduced by a subordinating conjunction, cannot stand alone as a sentence. In sentence 1, the independent clause is "Don't join the team" and the dependent clause is "unless you are willing to work hard". The subordinating conjunction is "unless". Moreover, in sentence 2, the independent clause is "I won't see a movie", the dependent clause is "until I've finished reading this book" and the subordinating conjunction is "until". Furthermore, in sentence 3, the independent clause is "Juliana loves to tap her toe", the dependent clause is "while she listens to music" and the subordinating conjunction is "while".