EXAMPLES

Exponents can express the different functions of the language. So, context and exponent help to discover what the function is. 

The next chart explains component with some examples.

Context	Exponent	Function
Situation in which language is used.	Words a person uses.	Reasons for communication.
A teacher asks students to do some tasks in the classroom. She says:	"First, read about flora and fauna, then, write the main ideas and five specific details."	Instructing students about activities they have to do.
A girl is talking with a friend about activities she used to do in the childhood. She says:	"When I was a child, I used to go to the park with all my cousins. We used to play and buy ice cream."	Narrating a memory about her childhood.
It is a sunny day. A boy wants to drink something with his friend. He says:	"Let's go to drink some beers"	Suggesting to drink something.
A girl forgot a gold bracelet in a party and she has to come back it to her mother. She says:	"Sorry, I lost your bracelet"	Apologizing to lost something important.
A student doesn't understand very well a special topic in the class. He tells to the teacher:	"Could you give me an example about that topic, please?"	Asking for clarification with an example.

Reference: 

Spratt, M., Pulverness, A., & Williams, M. (2011). The TKT Course Modules 1, 2 and 3. Cambridge ESOL.