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devinawilliam83
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Devina

You ask some excellent questions.

First of all, with units of measurement (5 liters, ten dollars, 14.6 kg) --- according to dominant scientific convention, these nouns are construed as singular subjects, regardless of whether or not they are immediately followed by a prepositional phrase. Thus

Five liters of milk is in the refrigerator.

Oil is essential for stir-frying. Three tablespoons is quite enough for frying these wontons.

Ten dollars is too much to pay for a cup of coffee.

Only 14.6 kg of silver was extracted from the mine shaft.


That's true for units of physical measurement, both scientific units (lt-yr, ohm, rad) as well as ordinary grocery-market units (pints, quarts, ounces, gallons).

Now, by contrast, a "dozen" or "half-dozen" -- those are not a unit of physical measurement. In fact, both of those are just plain ordinary numbers. A "dozen" means 12, and a "half-dozen" means 6. They are 100% interchangeable with their respective numbers. In fact, that's an excellent way to hear what's right --- replace "dozen" or "half-dozen" with "12" or "6". (The indefinite article "a" in front of it doesn't matter at all.)

We know that . . . .

Six files banded together cause work fatigue.

. . . is correct, so . . . .

A half-dozen files banded together cause work fatigue.

. . . is also correct.

Does all this make sense? Please let me know if you have any further questions.

Mike :)
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Mike, This very helpful.Thankyou so much. +1

mikemcgarry
Devina

You ask some excellent questions.

First of all, with units of measurement (5 liters, ten dollars, 14.6 kg) --- according to dominant scientific convention, these nouns are construed as singular subjects, regardless of whether or not they are immediately followed by a prepositional phrase. Thus

Five liters of milk is in the refrigerator.

Oil is essential for stir-frying. Three tablespoons is quite enough for frying these wontons.

Ten dollars is too much to pay for a cup of coffee.

Only 14.6 kg of silver was extracted from the mine shaft.


That's true for units of physical measurement, both scientific units (lt-yr, ohm, rad) as well as ordinary grocery-market units (pints, quarts, ounces, gallons).

Now, by contrast, a "dozen" or "half-dozen" -- those are not a unit of physical measurement. In fact, both of those are just plain ordinary numbers. A "dozen" means 12, and a "half-dozen" means 6. They are 100% interchangeable with their respective numbers. In fact, that's an excellent way to hear what's right --- replace "dozen" or "half-dozen" with "12" or "6". (The indefinite article "a" in front of it doesn't matter at all.)

We know that . . . .

Six files banded together cause work fatigue.

. . . is correct, so . . . .

A half-dozen files banded together cause work fatigue.

. . . is also correct.

Does all this make sense? Please let me know if you have any further questions.

Mike :)
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AnkitaAnkita
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As we know that
A number of things =plural
The number of things =singular.

So in this also ,
can we take it as
Ä half dozen =plural
half dozen=singular
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Hi,

Nice explanation and good learning for me.
But I am not sure the tablespoon is physical measurement which is universally accepted.
I think "three tablespoons are...." is much better.
Is there no difference between "five dollar is" and "five dollars is"?
Please elaborate me if I am wrong.
mikemcgarry
Devina

You ask some excellent questions.

First of all, with units of measurement (5 liters, ten dollars, 14.6 kg) --- according to dominant scientific convention, these nouns are construed as singular subjects, regardless of whether or not they are immediately followed by a prepositional phrase. Thus

Five liters of milk is in the refrigerator.

Oil is essential for stir-frying. Three tablespoons is quite enough for frying these wontons.

Ten dollars is too much to pay for a cup of coffee.

Only 14.6 kg of silver was extracted from the mine shaft.


That's true for units of physical measurement, both scientific units (lt-yr, ohm, rad) as well as ordinary grocery-market units (pints, quarts, ounces, gallons).

Now, by contrast, a "dozen" or "half-dozen" -- those are not a unit of physical measurement. In fact, both of those are just plain ordinary numbers. A "dozen" means 12, and a "half-dozen" means 6. They are 100% interchangeable with their respective numbers. In fact, that's an excellent way to hear what's right --- replace "dozen" or "half-dozen" with "12" or "6". (The indefinite article "a" in front of it doesn't matter at all.)

We know that . . . .

Six files banded together cause work fatigue.

. . . is correct, so . . . .

A half-dozen files banded together cause work fatigue.

. . . is also correct.

Does all this make sense? Please let me know if you have any further questions.

Mike :)

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