much / many / a lot of
"many + countable, much + uncountable, a lot of + both."
La regla
many + contables, much + incontables, a lot of + ambos.
"many" se usa con sustantivos contables ("many books, many meetings") y "much" con incontables ("much time, much money"). En frases afirmativas modernas se prefiere "a lot of" para ambos porque suena natural: "I have a lot of work". "Much" y "many" se usan sobre todo en preguntas y negaciones ("Do you have much time?", "I don't have many friends"). El error tipico es "many money": dinero es incontable, va con much o a lot of.
Ejemplos
I have a lot of work this week.
Tengo mucho trabajo está semana.
Do you have many meetings today?
Tienes muchas reuniones hoy?
I don't have much time.
No tengo mucho tiempo.
She has a lot of experience.
Tiene mucha experiencia.
How many tickets did you close?
Cuantos tickets cerraste?
How much money did it cost?
Cuanto dinero costo?
There aren't many people in the office today.
Hoy no hay mucha gente en la oficina.
Casos típicos
Trampas hispanohablantes
money es incontable: much o a lot of.
friends es contable: many o a lot of.
much en afirmativa suena raro: usa a lot of.
time es incontable: how much.