Most/Most of
Almost all/Almost every/Almost none
Most + plural noun
Most people
Most Americans
Most cars
Most of + a particular group
Most of the people in this building are under the age of 50.
Most of the Americans who live in Indiana are familiar with the Indy 500.
Most of the cars that are made in the United States are manufactured in the Midwest.
A common mistake I often hear is the use of “almost” in place of “most.”
INCORRECT: Almost people have brown eyes.
CORRECT: Most people have brown eyes.
INCORRECT: Almost Americans like to drive.
CORRECT: Most Americans like to drive.
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Almost all + plural noun
Almost every + singular noun
Almost none + of + particular group
Almost no + plural noun
INCORRECT: Almost sidewalks are made of concrete.
CORRECT: Almost all sidewalks are made of concrete.
INCORRECT: Almost none of the sidewalks are made of asphalt.
CORRECT: Almost every sidewalk here is made of concrete.
INCORRECT: Almost nothing sidewalk here is made of asphalt.
CORRECT: Almost no sidewalks here are made of asphalt.