Topic sentence or Main Idea sentence express the main point of a paragraph. The topic sentence is the general subject of an entire paragraph. The more general topic sentence is explained by the more specific details, which are known as supporting details. These details maybe facts, reasons, or examples that provide further information about the topic sentence.

Spanish is spoken in many countries. It is spoken throughout Latin America. Of course, it is the language of Spain. In some countries, like the Philippines, it is one of the official languages. Many people throughout the world use Spanish to communicate.