I
pronoun
1
BAD : We don't need to hire that much employees.
GOOD : We don't need to hire that many employees.
BAD : There are as much disadvantages as advantages.
GOOD : There are as many disadvantages as advantages.
BAD : There are too much people in Mexico.
GOOD : There are too many people in Mexico.
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much + uncountable noun: 'There isn't much traffic today.' 'There was too much furniture in the room.'
many + plural (countable) noun: 'There aren't many cars today.' 'There were too many chairs in the room.'
2
BAD : Nowadays, there are much more criminals than policemen.
GOOD : Nowadays, there are far more criminals than policemen.
BAD : I make much too many mistakes.
GOOD : I make far too many mistakes.
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At the beginning of a phrase that ends with a plural (countable) noun, use far (NOT much ). Compare 'much more traffic', 'far more cars'
3
BAD : As a doctor he earns much money.
GOOD : As a doctor he earns a lot of money.
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See note at MANY 1 (↑ many )
4
See TOO MUCH 2
II
adverb
BAD : British culture is much different from ours.
GOOD : British culture is very different from ours.
BAD : We were much afraid that we would miss the flight.
GOOD : We were very afraid that we would miss the flight.
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Much is used before an adjective (1) in questions and negative sentences: 'Is British culture much different from ours?' 'No, it isn't much different.' (2) before comparative forms: 'His last novel was much longer and much more interesting.' (3) before certain past participles acting as adjectives: 'Her drawings are much admired.'