Yes, the noun 'sky' is a countable noun. The plural form 'skies' is a word most often used when referring to the weather or specific atmospheric conditions.
The noun 'sky' is an uncountable noun as a word for the atmosphere that surrounds the earth.
The noun 'sky' is an uncountable noun as a word for the atmosphere that surrounds the earth.
The noun 'sky' is a countable noun (plural 'skies') as a word used when referring to the weather or specific atmospheric conditions.
Transport is both countable and uncountable as a noun.
countable
Uncountable
uncountable
The gerund painting is a countable noun, as in "There are 12 paintings in this room."
Transport is both countable and uncountable as a noun.
countable
Uncountable
uncountable
"Paragraph" is a countable noun because it refers to a distinct unit of text in writing. You can have one paragraph, two paragraphs, three paragraphs, etc.
uncountable
"Bun" can be both countable and uncountable. For example, you can say "I bought five buns" or "I would like some bun with my soup."
The gerund painting is a countable noun, as in "There are 12 paintings in this room."
Countable
few is countable
countable
The noun 'steel' is an uncountable (mass) noun, a word for a substance.