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The writer provides three theories to explain the strange sound (quackers) that the Russian submarine has detected.

The writer provides three theories to explain the strange sound (quackers) that the Russian submarine has detected. OVnME
The writer provides three theories to explain the strange sound (quackers) that the Russian submarine has detected. This sound was sound like frog croaks. On the other hand, the professor opposes the three theories. First, the reading states that this sound may was the sound of ocra whales which they produce it during mating. However, the professor refutes this theory by saying that ocra whales live near the surface of the ocean and the submarine was in the deep of the ocean. So the submarine was unable to detect the sound of ocra. And even if the ocra whales came close to the submarine, the sonar would detect the ocra whales easily. Second, the writer describes the sound to be of giant squid. In contrast, the speaker argues that the sound has been heard in 1960s and this squid lived until 1980s. Thus, if the sound was from the squid, then the submarine would detect the sound again during the two decades that the squid lived in. Therefore, this theory is not possible. Finally, the author explains that this sound may come from another military submarine of another country that was there secretly. On the contrary, the speaker tells us that this sound was moving around and changing direction quickly, and a submarine cannot do that. Also, if the sound was of another submarine, the sonar of the Russian submarine would detect the sound of the engine of the foreign submarine. And actually most of submarines' engines are silent.
The writer provides three theories to
This phrase/word (depending on the context) can be potentially replaced with :
explain
the strange
You use this word too often, consider replacing it with
sound
(
Possible spelling mistake found.
quackers
) that the Russian
You use this word too often, consider replacing it with
submarine
has detected. This
You use this word too often, consider replacing it with
sound
was
You use this word too often, consider replacing it with
sound
like frog croaks.
On the other hand
, the professor opposes the three theories.

First
, the reading states that this
You use this word too often, consider replacing it with
sound
may was the
You use this word too often, consider replacing it with
sound
of
Possible spelling mistake found.
ocra
You use this word too often, consider replacing it with
whales
which they produce it during mating.
However
, the professor refutes this theory by saying that
Possible spelling mistake found.
ocra
You use this word too often, consider replacing it with
whales
This phrase/word (depending on the context) can be potentially replaced with :
live
near the surface of the ocean and the
You use this word too often, consider replacing it with
submarine
was in the deep of the ocean.
This phrase/word is too simple and can be replaced with:
So
the
You use this word too often, consider replacing it with
submarine
was unable to
You use this word too often, consider replacing it with
detect
the
You use this word too often, consider replacing it with
sound
of
Possible spelling mistake found.
ocra
. And even if the
Possible spelling mistake found.
ocra
You use this word too often, consider replacing it with
whales
came close to the
You use this word too often, consider replacing it with
submarine
, the sonar would
You use this word too often, consider replacing it with
detect
the
Possible spelling mistake found.
ocra
You use this word too often, consider replacing it with
whales
easily
.

Second, the writer
This phrase/word (depending on the context) can be potentially replaced with :
describes
the
You use this word too often, consider replacing it with
sound
to be of giant squid.
In contrast
, the speaker argues that the
You use this word too often, consider replacing it with
sound
has
been heard
The article is probably missing here: "in the 1960s".
in 1960s
and this squid
This phrase/word (depending on the context) can be potentially replaced with :
lived
until 1980s.
Thus
, if the
You use this word too often, consider replacing it with
sound
was from the squid, then the
You use this word too often, consider replacing it with
submarine
would
You use this word too often, consider replacing it with
detect
the
You use this word too often, consider replacing it with
sound
again during the two decades that the squid
This phrase/word (depending on the context) can be potentially replaced with :
lived
in.
Therefore
, this theory is not possible.

Finally
, the author
This phrase/word (depending on the context) can be potentially replaced with :
explains
that this
You use this word too often, consider replacing it with
sound
may
This phrase/word (depending on the context) can be potentially replaced with :
come
from another military
You use this word too often, consider replacing it with
submarine
of another country that was there
secretly
.
On the contrary
, the speaker
This phrase/word (depending on the context) can be potentially replaced with :
tells
us that this
You use this word too often, consider replacing it with
sound
was moving around and changing direction
quickly
, and a
You use this word too often, consider replacing it with
submarine
cannot do that.
Also
, if the
You use this word too often, consider replacing it with
sound
was of another
You use this word too often, consider replacing it with
submarine
, the sonar of the Russian
You use this word too often, consider replacing it with
submarine
would
You use this word too often, consider replacing it with
detect
the
You use this word too often, consider replacing it with
sound
of the engine of the foreign
You use this word too often, consider replacing it with
submarine
. And actually
After 'most of', you should use 'the' ("most of the submarines") or simply say "most submarines".
most of submarines
' engines are silent.
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IELTS essay The writer provides three theories to explain the strange sound (quackers) that the Russian submarine has detected.

Essay
  American English
4 paragraphs
249 words
This writing has been penalized,
text can't be
less than 250 words in Task 2
and less than 150 words in Task 1
5.0
Overall Band Score
Coherence and Cohesion: 5.5
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • Include an introduction and conclusion
  • Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • Vary your linking phrases using synonyms
Lexical Resource: 5.0
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 5.0
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • Support ideas with relevant, specific examples
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    Currently is not available
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