Read and translate the sentences. Decide which of the underlined nouns are countable or uncountable and explain why: 1. We have read all the official papers. There were some sheets of paper on the table. 2. Two coffees, please. I like strong coffee. 3. Give me two glasses. Are they made of glass or plastic? 4. Many thousands of bricks are produced at the factory. Our school is built of brick.

"We have read all the official papers. There were some sheets of paper on the table."

• Papers is a countable noun here because it refers to individual documents or items, which can be counted.

• Paper (in "sheets of paper") is uncountable in this case because it refers to the material in general, not individual pieces.

"Two coffees, please. I like strong coffee."

• Coffees is countable in the first sentence because it refers to individual servings or cups of coffee.

• Coffee in the second sentence is uncountable, as it refers to the substance in general, not individual servings.

"Give me two glasses. Are they made of glass or plastic?"

• Glasses is countable because it refers to individual items that can be counted (e.g., two cups or containers).

• Glass in the second sentence is uncountable, as it refers to the material, not individual pieces.

"Many thousands of bricks are produced at the factory. Our school is built of brick."

• Bricks is countable because it refers to individual units of the material.

• Brick is uncountable in the second sentence, as it refers to the material in a general sense, not individual bricks.