Grammar exercises

Make plurals.

acid

atom

branch

chemist

electron

engineer

field

law

method

mineral

problem

procedure

property

report

research

scientist

study

substance

survey

theory

type

Fill in with is, am, are.

1. The sky…….very blue today. 2. I…….not tired. 3. This shelf…….very heavy. 4. These shelves …….very heavy, too. 5. The child…….asleep. 6. Look! This…….Peter. 7. He…….kindness itself. 8. I …….cold. 9. He …….my boyfriend. 10. The castle …….one thousand years old. 11. My brother and I …….good tennis players. 12. Amy…….at home but her parents …….at work. 13. I…….busy. 14. The weather…….very nice today. 15. This case…….very heavy. 16. The dog…….angry. 17. I…….hot. 18. Diamonds…….expensive. 18. All women…….beautiful. 19. Motor-racing…….a dangerous sport. 20. Rome…….in Italy. 21. Where…….your sister? 22. Where…….you from? 23. What…….this? 24. Where ……. he from? 25. They…….from London. 26.……. she from Germany? 27. I …….not from Russia. 28. Where …….they from? 29. We …….not busy. 30. She…….in her late teens. 31. …….you from the USA? 32. How…….your husband? 33. How…….your children? 34. How…….his wife? 35. How……. their daughter? 36. How…….they? 37. How…….her brothers? 38. How …….she? 39. Where…….our son? 40. What…….her boyfriend's job? 41. How old…….their mother? 42. What…….your uncle's name? 43. …….their children students? 44. …….his aunt a surgeon? 45. …….her daughter a journalist? 46. How …….he?

Fill in the gaps with question words.

…… is that man’s name? 2. ….. way is shorter? 3. ….. is your umbrella? 4. ……is more expensive: fish or meat? 5. ….is your favourite sport? 6. ….is older: Ann or Tom? 7. ……is your mobile number? 8. …..is your brother? 9. ….is the capital of Italy? 10. …..is this T-shirt? 11. ….are your eyes? 12. …..is it to the department store from here? 13. …...nationality are you? 14. ….are my trainers? 15. …..are these shoes?

Translate into English:

1.Ты голоден? 2. Твой брат дома? 3. Сколько стоят эти открытки? 4. Эта гостиница очень дорогая. 5. Я интересуюсь искусством. 6. Все магазины сегодня открыты. 7. Музей сегодня открыт? 8. Мне жарко и хочется пить. 9. Я не устала. 10. Они не студенты, они врачи. 11. Тебе интересны иностранные языки? 12. Ты замужем? 13. Твоя сестра высокая? 14. Сегодня холодно? – Нет. 15. У тебя руки холодные. Тебе холодно? 16. Собака хочет пить. 17. Париж – столица Франции. 18. Экзамен очень трудный. 19. Аня дома, а ее муж на работе. 20. Смотри! Это же мистер Джоули! 21. Ты устала? – Да. 22. Канада – большая страна. 23. Кошка спит. 24. Сколько лет твоей сестре? А как ее зовут? 25. Какого цвета у тебя глаза? – Голубые. 26. Как называется столица Индии? 27. Какого цвета твоя машина? 28. Где моя сумка?

The Present Simple. Add –s where necessary.

Chemistry (be) a branch of natural science that (deal) principally with the properties of substances, the changes they (undergo), and the natural laws that (describe) these changes.

Chemicals (be) everywhere and are everything. Anything you can touch or smell or see (contain) one or more chemicals. Many (occur) naturally but some (be) man-made. Chemists (discover) naturally occurring chemicals and also make new ones never seen before. Chemists (study) the properties of the natural and man-made chemicals. This information (be) used to understand how some chemicals may be modified to make them more useful and they (develop) the methods to make the modifications. Because everything (be) a chemical, chemistry (be) one of the foundations of modern industrial economies. Advancements in the field of chemistry have brought about major improvements in our world. Improvements (range) from new medicines that (cure) disease, to new materials that make us safer and stronger, to new sources of energy that (enable) new activities.

Oxygen Facts

• Oxygen (be) an element with the chemical symbol O and atomic number 8.

• Oxygen (be) a very reactive element that easily (form) compounds such as oxides.

• Under standard temperature and pressure conditions two oxygen atoms (join) to form dioxygen (O₂), a colorless, tasteless and odorless gas.

• Oxygen (be) essential to human life, it (be) found in the air we (breathe) and the water we drink (H₂0).

• Oxygen (make) up around 21% of the air you breathe. It (be) also the most common element in the Earth’s crust (around 47%) and the third most common element in the Universe (but far less than hydrogen and helium, the two most common).

• Ozone (O₃) (be) an allotrope (different form) of oxygen that (combine) three oxygen atoms together. While ground level ozone is an air pollutant, the ozone layer in the Earth’s upper atmosphere (provide) protection from the sun’s harmful rays by filtering UV light.

• The sun’s mass (be) made up of around 1% oxygen.

• Oxygen therapy (be) used as a common medical treatment.

• Oxygen (have) a number of other practical uses such as smelting metal from ore, water treatment, as an oxidizer for rocket fuel and a number of other industrial, chemical and scientific applications.

• Concentrated oxygen (promote) fast combustion. While a spark or heat is still needed to start a fire, having concentrated oxygen near various fuels can be very dangerous.

 

Fill in with do, does, is, are.

1. How ………. plants grow and why ……….they green?

2. Why ……….the sun hot?

3. Why ……….soup get hot in a microwave oven?

4. Why ……….wood burn whereas rocks do not?

5. What ……….a flame?

6. How ……….soap work?

7. Why ……….soda fizz when you open a bottle?

8. How ……….atoms differ from molecules?