Aw, don't let your face droop.
"You" is the simple subject of the sentence, "You asked this question."
"fire" is the simple subject.
The wind blows.
i went on an expedition
A simple sentence is a sentence that contains a subject, a verb, and is a complete thought. (A simple sentence is also known as an independent clause). For example: Jack likes to play baseball. Jack is the subject, his liking something is the verb, and the complete thought is that he enjoys doing this activity.