IELTS Writing Correction Service
Writing Samples
Band 5.5

The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
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The given diagram illustrates the process of electricity generation in a hydroelectric
power
Use synonyms
station
Use synonyms
.
Overall
Linking Words
, it can be seen that the main facilities are the
dam
Use synonyms
 and
power
Use synonyms
station
Use synonyms
 that control the
flow
Use synonyms
 of
water
Use synonyms
.
Additionally
Linking Words
, the direction of the
flow
Use synonyms
 is different on the day and night. The
Dam
Use synonyms
,
Remove the comma
apply
show examples
 is built on the high-level
reservoir
Use synonyms
 of rivers,
operates
Correct word choice
and operates
show examples
 differently depending on the time of day. In the daytime,
intake
Correct article usage
the intake
show examples
 of
Use synonyms
dam
Correct article usage
the dam
show examples
open
Wrong verb form
opens
show examples
, and
water
Use synonyms
Use synonyms
flow
Correct subject-verb agreement
flows
show examples
 down through the
power
Use synonyms
station
Use synonyms
 in order to generate electricity,
then
Linking Words
 it
arrive
Change the verb form
arrives
show examples
the
Change preposition
at the
show examples
 low-level
reservoir
Use synonyms
. The
flow
Use synonyms
 of
water
Use synonyms
 through the reversible turbines of the
power
Use synonyms
station
Use synonyms
, which operate
generator
Add an article
a generator
show examples
 to produce electricity and through the
power
Use synonyms
 lines to
national
Add an article
the national
show examples
 grid. In the night, the whole process is reversed. The reversible turbines of
Use synonyms
power
Correct article usage
the power
show examples
station
Use synonyms
 pump
water
Use synonyms
 from the low-level
reservoir
Use synonyms
 back into the high-level
reservoir
Use synonyms
. Concurrently, the intake gates of the
dam
Use synonyms
 are closed so that it
avoid
Change the verb form
avoids
show examples
water
Use synonyms
flow
Use synonyms
 down.

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Basic structure: Change the third paragraph.
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Basic structure: Change the fourth paragraph.
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Vocabulary: Replace the words power, station, dam, flow, water, reservoir with synonyms.
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Vocabulary: Only 3 basic words for charts were used.
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Vocabulary: Use several vocabularies to present the data in the second paragraph.
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Vocabulary: Use several vocabularies to present the data in the third paragraph.
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Vocabulary: Use several vocabularies to present the data in the fourth paragraph.
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Topic Vocabulary:
  • hydroelectric power station
  • reservoir
  • potential energy
  • mechanical energy
  • electrical energy
  • turbine
  • generator
  • renewable energy
  • fossil fuels
  • emissions
  • power lines
  • gate-controlled tunnels
  • gravity-driven
  • transformation
  • clean energy source
  • sustainable
  • recycled water
  • mountainous area
  • activate
  • transmit
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