The nature, form or pattern of the sentences can be changed without changing the meaning of the sentences. This enables one understand that there are many different ways of expressing an idea.
"My friend is too rich to be my wife" can be changed to "My friend is so rich that she cannot be my wife.' We can change a simple sentence into a complex or a compound one, an affirmative sentence into an interrogative or an exclamatory one. In making the transformations there are certain definite patterns to be followed.
1. Statement to Question
We are not satisfied with our experiment
Are we satisfied with our experiment?
2. Simple to complex
He did not admit his ignorance
He did not admit that he is ignorant
3. Simple to compound
Opening the door, she threw the garbage out
She opened the door and threw the garbage out
4. Complex into compound
As there are many people in the world, I have to accommodate my liberty to their liberties
There are many people in the world and therefore I have to accommodate my liberty to their liberties.
5. Affirmative to Negative
I was doubtful whether it was you
I was not sure that it was you.