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Exercise 7. What new relationships can you find in the examples below?
Rewrite each compound to show the relationship. For example: a foot pump –
a pump which is operated by foot, a ribbon cable – a cable which is like a
ribbon, a gear lever –a lever for operating gears. Use dictionary if necessary:
1)chain wheel, 2)disc wheel, 3) foot brake, 4)a hand throttle, 5)strain gauge,
6)college lecturer, 7)toe-clip, 8)boiler thermostat, 9)safety helmet, 10)aircraft
engineer.
Exercise 8. Writing Describing a process, 1: sequence
When we write about a process, we have to:
1 Sequence the stages
2 Locate the stages
3 Describe what happens at each stage
4 Explain what happens at each stage
In this unit, we will study how to sequence the stages.
1 Consider these stages in the operation of a washing machine.
The drum is tilled with water.
The water is heated to the right temperature.
Soap is added.
The drum is rotated slowly.
The dirty water is pumped out.
Clean water is added.
The drum is rotated much faster and the water pumped out.
The clean clothes are removed.
Instead of numbers, we can show the correct order using sequence words.
First the drum is filled with water.
Then the water is heated to the right temperature.
Next soap is added.
After that, the drum is rotated slowly.
Next the dirty water is pumped out.
Then clean water is added.
After that, the drum is rotated much faster and the water pumped out.
Finally, the clean clothes are removed.
2 Study this diagram. It shows an extruder for forming plastic pipes. Describe
the extruder.
3. Now put these stages in the process in the correct sequence.
A The hot plastic is forced through the die to form a continuous length of
pipe.
B The rotating screw forces the plastic past heaters.
C The plastic granules are mixed and placed in the hopper.
D The pipe is cooled and cut to suitable lengths.
E The plastic melts.
