curriculum/challenges/english/blocks/learn-how-to-use-basic-programming-vocabulary-in-conversations/662f659f6ad8103db5d73490.md
The preposition on is often used to specify the subject or topic of a book or discussion. In this context, it connects the book to the topic it covers, which is Object-Oriented Programming (also known as OOP).
The word principle refers to the fundamental theories or beliefs that form the basis for a system, in this case, the core ideas of OOP.
Of course! I have a book BLANK BLANK BLANK.
on
This preposition is used here to indicate that the book is about the subject of OOP's principles.
OOP's
This possessive form shows that the noun followed belongs to Object-Oriented Programming.
principles
They are the basic ideas or rules that guide the structure and functioning of OOP.
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