Exercise 1.7. Decide which of the following nouns are countable (исчисляемые) or uncountable (неисчисляемые):...

Countable nouns: machine, word, coffee, idea, hour, tree, silver, meat, happiness, book, news, house, friend, milk, student, pen, paper, clothes, picture, goods.

Uncountable nouns: time, water, music, snow, money, family, darkness, knowledge, sea, information, speed, air.

Sure, let's determine which of the given nouns are countable and which are uncountable. Here is an expanded explanation for each:

Countable Nouns:

1. Machine: Machines can be counted (one machine, two machines, etc.).
2. Word: Words can be counted (one word, two words, etc.).
3. Idea: Ideas can be counted (one idea, two ideas, etc.).
4. Family: Although a family is a collective noun, it can be counted (one family, two families, etc.).
5. Hour: Hours can be counted (one hour, two hours, etc.).
6. Tree: Trees can be counted (one tree, two trees, etc.).
7. Book: Books can be counted (one book, two books, etc.).
8. House: Houses can be counted (one house, two houses, etc.).
9. Friend: Friends can be counted (one friend, two friends, etc.).
10. Student: Students can be counted (one student, two students, etc.).
11. Pen: Pens can be counted (one pen, two pens, etc.).
12. Picture: Pictures can be counted (one picture, two pictures, etc.).

Uncountable Nouns:

1. Time: Time is a continuous quantity and cannot be counted directly (you don't say "one time, two times" in this context).
2. Water: Water is a substance and cannot be counted in its liquid form (you don't say "one water, two waters").
3. Music: Music is an art form and cannot be counted (you don't say "one music, two musics").
4. Snow: Snow is a substance and cannot be counted (you don't say "one snow, two snows").
5. Coffee: Coffee is usually uncountable when referring to the liquid (you don't say "one coffee, two coffees" unless you are referring to cups of coffee).
6. Money: Money is a general term for currency and cannot be counted directly (you don't say "one money, two moneys").
7. Darkness: Darkness is a state and cannot be counted (you don't say "one darkness, two darknesses").
8. Knowledge: Knowledge is an abstract concept and cannot be counted (you don't say "one knowledge, two knowledges").
9. Sea: While you can count seas as geographical entities, "sea" in general usage refers to the concept of the ocean, which is uncountable.
10. Silver: Silver as a metal or material is uncountable (you don't say "one silver, two silvers").
11. Meat: Meat as a food substance is uncountable (you don't say "one meat, two meats").
12. Happiness: Happiness is an abstract concept and cannot be counted (you don't say "one happiness, two happinesses").
13. Information: Information is an abstract concept and cannot be counted (you don't say "one information, two informations").
14. Speed: Speed is a continuous measure and cannot be counted (you don't say "one speed, two speeds").
15. News: News is uncountable and refers to information (you don't say "one news, two newses").
16. Milk: Milk as a liquid is uncountable (you don't say "one milk, two milks").
17. Paper: Paper as a material is uncountable (you don't say "one paper, two papers" when referring to the substance).
18. Clothes: Clothes is a collective noun and uncountable (you don't say "one clothes, two clothes").
19. Air: Air as a substance is uncountable (you don't say "one air, two airs").
20. Goods: Goods is a collective noun and uncountable (you don't say "one goods, two goods").

Special Cases:

• Coffee: While uncountable when referring to the liquid, it can be countable when referring to servings or cups of coffee (e.g., "three coffees").
• Paper: As material, it is uncountable, but when referring to individual sheets or documents, it can be countable (e.g., "three papers").

Understanding whether a noun is countable or uncountable helps in using appropriate articles, quantifiers, and grammatical structures in English.

Countable nouns: machine, word, coffee, idea, hour, tree, silver, meat, information, book, news, house, friend, student, pen, paper, clothes, picture, goods.

Uncountable nouns: time, water, music, snow, money, family, darkness, knowledge, sea, happiness, speed, milk, air.