A sentence is a group of words that expresses a complete thought. Every sentence must have two main parts:
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Subject – who or what the sentence is about
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Predicate – what the subject does or is (includes a verb)
Example:
The dog (subject) barked loudly (predicate).
Types of Sentences by Structure:
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Simple: One complete idea (e.g., She runs fast.)
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Compound: Two ideas joined by a conjunction (e.g., She runs fast, and he walks slowly.)
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Complex: One main idea and one dependent clause (e.g., She runs when it rains.)
A complete sentence must make sense on its own, unlike fragments or run-ons.