Used with countable nouns
A large number of – It means “a great quantity”. It’s more formal than many
👉 A large number of people came to the gathering
Used with uncountable nouns
A great deal of – It means “a great quantity”. It’s more formal than much
👉 A great deal of pain is suffered by widows
Used with both, countable and uncountable nouns
Most / Most of the– It means “the majority of…”
👉 I will spend most time studying → I will spend most of the time studying
👉 Most people are nice → Most of the people are nice
Plenty of – It means “enough quantity of…”
👉 She has plenty of savings to last a year
👉 I have plenty of friends, so I will be fine
All – It means “todo/a, todos/as”
👉 All children are special
👉 All butter will melt if subjected to heat
Some – It means “alguno/a, algunos/as”. We use it:
In affirmative sentences
👉 I still have some fruit in the fridge → Aún tengo algo de comida en el frigorífico
👉 Some of my friends are married → Algunos de mis amigos están casados
In questions, to offer something to someone without specifying the amount
👉 Would you like some coffee? → ¿Te apetece algo de café?
👉 Would you like some tea? → ¿Te apetece algo de té?
In questions, to ask permission politely
👉 Can I have some beer? → ¿Puedo tomar cerveza?
👉 Is it ok if I cook some vegetables? → ¿Te parece bien que cocine algo de verdura?