We use stop punctuation at the end of a complete thought. The most common form of stop punctuation is the period (.). Use a period at the end of a complete thought.
Today is Monday.
Dad mowed the lawn.
Our teacher assigned an essay.
The game is canceled because the field is wet.
A period (.) is one form of stop punctuation. Place a period at the end of a sentence. The period tells the reader to stop because that is the end of the complete thought.
▶Now you try it. Which of these groups of words is a complete thought and needs a period at the end? The school bus stops at our corner or Every day after school – I hope you placed a period after the first group of words.