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sentence explains what the writer will say about the
topic. These controlling ideas tell the reader what to
expect in the supporting sentences.
Topic Controlling idea
My friend is an honest person.
My friend is the funniest person I know.
My friend has a terribly dangerous job.
Features of an effective topic sentence
• A topic sentence is not a fragment. It is a complete
sentence.
Fragment : Smart phones for college
students. (INCORRECT)
Complete Sentence: Smart phones have several
useful features for college
students.
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