Affect/Effect Affect is usually a verb: Chester’s humming affected Posey’s ability to concentrate. Effect is usually a noun: Chester was sorry for the effect his humming had. If you find yourself stumped about which one to use in a sentence, try substituting the word “alter” or “result.” If “alter” fits (Chester’s humming altered Posey’s ability to concentrate), use affect. If “result” fits (Chester was sorry for the result his humming had), use effect.
Their/There/They’re Their is the possessive form of “they”: Chester and Posey took their time. There indicates a place: It took them an hour to get there. They’re is a contraction of “they are”: Are Chester and Posey coming? They’re almost here.
Farther/Further Farther refers to physical distance: Posey can run farther than Chester. Further refers to metaphorical distance: Chester is further away from finishing his project than Posey is.
When the verb in a sentence is active langiage, the subject is doing the acting. For example, "Kevin hit the ball"Kevin is the subject who hit the ball.
