1. affect versus effect "It was the most affecting sight I have ever seen!" said Squealer, lifting his trotter and wiping away a tear.

2. affect versus effect The majority of the time you use affect with an a as a verb and effect with an e as a noun

3. affect versus effect Affect with an a means "to influence," examples: "The arrows affected the aardvark," " The rain affected Amy's hairdo." Affect can also mean, roughly, "to act in a way that you don't feel," examples: "She affected an air of superiority." “Her affect was disturbing to me: she was always trying to be something she was not”

4. affect versus effect Effect with an e has a lot of subtle meanings as a noun, but basically its meaning is "a result" Examples: "The effect was eye-popping." "The sound effects were amazing." "The rain had no effect on Amy's hairdo" "The trick-or-treaters hid behind the bushes for effect.“ “The effect of plants on biodiversity is…”

5. affect versus effect Grammar Girl says, use aardvark to remember: “The arrows affected the aardvark.” “The effect was eye-popping." Affect with an a goes with the a words arrow and aardvark Effect with an e goes with the e word eye-popping

6. http://grammar.quickanddirtytips.com/affect-versus-effect.aspx An introduction to Grammar Girl!