fruit

[fungyf_hk]

Which one is correct?

My favourite fruit is mango.
My favourite fruit is the mango.
My favourite fruit is mangoes.
My favourite fruits are mangoes.

[Tdol]

Which one is correct?

My favourite fruit is mango.
My favourite fruit is the mango.
My favourite fruit is mangoes.
My favourite fruits are mangoes.

I would say 'Mango is my favourite fruit'. You could also use the plural.

[fungyf_hk]

Do you mean that I can say 'Mangoes are my favourite fruit.'?

[TheMadBaron]

You can say
"Mangoes are my favourite fruit."
"Mango is my favourite fruit."
"My favourite fruit is mango".

You can't say "My favourite fruit is mangoes," because 'is' = singular and mangoes = plural.

It's not grammatically wrong to say "My favourite fruits are mangoes," but it sounds strange.

My favourite fruits are mangoes, apples and rambutans.