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27 Aug 2015, 12:23
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I probably have a fundamental flaw in my understanding of the following concept. Hope to get some insight.
I have the following 2 sentences:
Correct Sentence
1. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and the substitution of commercial for subsistence farming.
Incorrect Sentence
2. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops and the substitution of commercial for subsistence farming.
Why is sentence 2 incorrect? Can I not break sentence 2 in the following way:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields,
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
What makes sentence 1 correct? Its structure according to the way I look at it is of the form:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields
and of
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
Here are 2 more sentences:
Correct Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
a)the flow of heat from the inner through the outer planet
and of
b)the formation and periodic reversal in direction of Earth's magnetic field.
(After we have said ....studies OF, why do we need to repeat OF between the two items?)
Incorrect Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
how heat from the inner core flows through the outer planet,
and
the formation and periodic reversal in direction of Earth's magnetic field.
I have the following 2 sentences:
Correct Sentence
1. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and the substitution of commercial for subsistence farming.
Incorrect Sentence
2. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops and the substitution of commercial for subsistence farming.
Why is sentence 2 incorrect? Can I not break sentence 2 in the following way:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields,
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
What makes sentence 1 correct? Its structure according to the way I look at it is of the form:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields
and of
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
Here are 2 more sentences:
Correct Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
a)the flow of heat from the inner through the outer planet
and of
b)the formation and periodic reversal in direction of Earth's magnetic field.
(After we have said ....studies OF, why do we need to repeat OF between the two items?)
Incorrect Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
how heat from the inner core flows through the outer planet,
and
the formation and periodic reversal in direction of Earth's magnetic field.
azadmd
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GMAT 1: 700 Q47 V39
Posts: 5
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27 Aug 2015, 12:46
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hiajit
I probably have a fundamental flaw in my understanding of the following concept. Hope to get some insight.
I have the following 2 sentences:
Correct Sentence
1. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and the substitution of commercial for subsistence farming.
Incorrect Sentence
2. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops and the substitution of commercial for subsistence farming.
Why is sentence 2 incorrect? Can I not break sentence 2 in the following way:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields,
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
What makes sentence 1 correct? Its structure according to the way I look at it is of the form:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields
and of
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
Here are 2 more sentences:
Correct Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
a)the flow of heat from the inner through the outer planet
and of
b)the formation and periodic reversal in direction of Earth's magnetic field.
(After we have said ....studies OF, why do we need to repeat OF between the two items?)
Incorrect Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
how heat from the inner core flows through the outer planet,
and
the formation and periodic reversal in direction of Earth's magnetic field.
I have the following 2 sentences:
Correct Sentence
1. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and the substitution of commercial for subsistence farming.
Incorrect Sentence
2. During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops and the substitution of commercial for subsistence farming.
Why is sentence 2 incorrect? Can I not break sentence 2 in the following way:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields,
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
What makes sentence 1 correct? Its structure according to the way I look at it is of the form:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution involved
the large-scale introduction of
a)enclosed fields
and of
b)new farming techniques
and
c)crops,
and the substitution of commercial for subsistence farming.
Here are 2 more sentences:
Correct Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
a)the flow of heat from the inner through the outer planet
and of
b)the formation and periodic reversal in direction of Earth's magnetic field.
(After we have said ....studies OF, why do we need to repeat OF between the two items?)
Incorrect Sentence
The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of
how heat from the inner core flows through the outer planet,
and
the formation and periodic reversal in direction of Earth's magnetic field.
The very basic answer would be in the second version of the first example (incorrect one) you are unnecessarily clubbing two entities "new farming techniques"
and "corps" whereas the sentence would be correct only if all the four entities are in parallel to each other.
a)enclosed fields
b)new farming techniques
c)crops
d)substitution of commercial for subsistence farming.
28 Aug 2015, 06:19
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Can't understand that. I am looking for the right parallelism structure in this case. You can follow the discussions on both these examples on the links below:
bit.ly/1hkPIai
bit.ly/1KS97Hd
bit.ly/1hkPIai
bit.ly/1KS97Hd
