Identify the type of sentence: In my opinion, Romeo and Juliet by William Shakespeare is a great play.

The sentence "In my opinion, Romeo and Juliet by William Shakespeare is a great play" is a Declarative sentence.

• Declarative sentences make a statement or declaration. They are typically used to provide information or express an opinion.

• Imperative sentences give commands or orders.

• Interrogative sentences ask questions.

• Exclamatory sentences express strong emotion or excitement.

In this case, the sentence is simply stating the speaker's opinion about the play, making it a declarative sentence.