Common Mistakes : Affect

Affect – Verb

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BAD: The programme is about computers and their affects on our lives

GOOD: The programme is about computers and their effect on our lives

To affect something (verb) is to have an effect on it (noun): ‘Smoking affects your health.’  smoking has an effect on your health

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BAD: This problem has also affected on the automobile industry

GOOD: This problem has also affected the automobile industry

affect sb/sth (WITHOUT on ): Fortunately these new tax laws don’t affect us

Compare: This problem has also had an effect on the automobile industry