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Speak Up! Discuss these questions with a partner




Grammar Exercises

Vibrate

Compress

Mechanics

Contain

Differ

Exercise 4.

Complete the sentences with the correct form of the words.

1. Pipes can be fitted together with ______ pipe fittings.

2. A tank is a _____ for liquid or gas and may be watertight and open at the top.

3. Liquids can be forced to flow along pipes by _____ devices called pipes.

4. A pump used to increase the pressure of gas is called a _____.

5. Given that this machine will move to an extent, due to _____, it should be connected to water supply using a flexible hose.

Exercise 5. Complete phrases about fluid containment with the correct prepositions.

by from along above for in

 

1. Pipelines are long-distance pipes, often ____ ground, ____crude or natural gas.

2. Hoses are flexible tubes, often made _____ plastic.

3. Some pressure vessels heat the liquid _____ order to boil it and increase pressure.

4. Liquids can be forced to move along pipes _____ mechanical devices called pumps.

5. A device powered by a motor _____ a duct, is called a fan.

 

Exercise A. Write the Past Simple or the Past Continuous above each set of uses and then match the uses 1 – 9 with the sentences.

___________________________:

1. for a completed action in the past ___

2. for past habits and routines ___

3. for past states ___

4. for completed actions that happened one after the other in the past ___

___________________________:

5. for an action in progress at a particular moment in the past ___

6. for a longer action that was interrupted by a shorter action ___

7. for two or more longer actions happening at the same time ___

8. for temporary situations in the past ___

9. to provide background information in a story ___

 

a As soon as the plane landed, Ted switched on his mobile and checked his emails.

b The village tribe elected a new chief every year.

c My cousin was working as a history teacher at the time.

d It was a beautiful day: the sun was shining and the birds were singing.

e The Romans conquered Britain and other areas.

f I was reading the recipe when I split the hot milk.

g At ten o’clock last night, I was watching a film about education in Ukraine.

h We were very tired after the concert.

i While John was reading an article about globalization, Tina was sleeping on the sofa.

 

Exercise B. Look at the sentences. Which verb forms are incorrect?

1. While the archeologists dug in the desert, a sand storm began.

2. They were discovering the ruins of the ancient temple a century ago.

3. While my friend looked through the journal, I was doing my home task.

4. When I was going to the University, I was meeting my friend.

5. Holidays abroad became popular nowadays.

 

Think about a machine or installation you’re familiar with, in which liquid or gas is stored, supplied or circulated. What equipment is used to contain the gas or liquid? How are flow and pressure managed?

 




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