Here are the four types of sentences by purpose:
➲ A declarative sentence makes a statement or expresses an opinion. Use a period at 
the end of a declarative sentence. 
Andy Murray has a great will to win. 
The commentator laughed at his own mistake. 
➲ An interrogative sentence asks a question and ends with a question mark. 
Are you using the saw today, Mitch? 
May the other people come along with us? 
➲ An exclamatory sentence expresses strong feeling and ends with an exclamation mark. 
This is just the way to do it! 
That is great news! 
➲ An imperative sentence gives a command (strong emotion) or makes a request (mild 
emotion). Use an exclamation after the imperative sentence that contains a strong 
emotion, and a period after one that contains a mild emotion. 
Stop that foolish talk now! 
Please take the empty plate away now, Ira.  
