Examples of Topic Sentences

Examples of Topic Sentences

Here are several examples of strong topic sentences that introduce the main idea of each paragraph effectively:

1. Example 1: Expansion of the United States

• Main idea: President James Polk expanded the U.S. territory.
• Topic sentence: 'Before leaving office, President Polk acquired territory in the western United States.'

2. Example 2: Space Mission to Mars

• Main idea: Space agencies are planning a Mars mission.
• Topic sentence: 'Humans can more easily reach Mars by using the moon as a launch base.'

3. Example 3: Ocean Exploration

• Main idea: The ocean is the most unexplored place on Earth.
• Topic sentence: 'Many deep areas of the ocean remain unexplored due to technological limitations.'

These examples demonstrate how a topic sentence introduces the main idea and sets the direction for each paragraph.