OFFICIAL EXPLANATIONProject SC Butler: Sentence Correction (SC1)
THE PROMPTQuote:
When coins were made of silver, their size and weight were in direct proportion to their face value; therefore,
the half dollar was necessarily twice as big as the quarter.
THE OPTIONSQuote:
A) the half dollar was necessarily twice as big as the quarter
• although the phrase "twice as big" may sound strange, it is okay because it refers to the
size of the coins, a fact that is mentioned in the first part of the sentence
• hmm -
weight is left out of the comparison.
→ a better construction would state, ". . . the half dollar was necessarily twice as big and twice as heavy as the quarter."
→ this omission is not a huge error and the other options contain the same omission
• I do not see any other errors
KEEP A
Quote:
B) half dollars were necessarily
twice larger than quarters
•
twice larger than is unidiomatic.
→ In order to make correct comparisons, we need
twice as large as •
twice larger than is also illogical.
Twice means
-- adverb: "on two occasions" (
I read the book twice, in which
twice modifies the
verb "read," not the
noun "book")
"Larger" is not a verb.
-- adverb: doubled in quantity or degree (
She owns twice as many books as he owns. Now twice modifies "many," which is a quantity. Larger is not a quantity.
Nor is
larger a standalone degree, which would be written this way:
Twice as strong as. Twice as many as.ELIMINATE B
Quote:
C) half
dollars were necessarily
twice larger than that of
the quarter•
twice larger than is incorrect, just as it is in (B)
•
that just makes a bigger mess of
twice larger than. Even if the latter were comprehensible, what does
that refer to? Size? Weight? Neither? Both? Whatever, the use of
that is wrong.
• half dollars (plural) and the quarter (singular) are not truly parallel.
→ we need
half dollars and
quarters OR
the half dollar and
the quarter (in the latter, "the" stands for the whole category of "quarters")
→ SC questions contain this subtle lack of parallelism on occasion; watch for it.
ELIMINATE C
Quote:
D)
it was necessary that half dollars
were twice
as much as quarters
•
it was necessary that is hella awkward and probably ungrammatical because that phrasing typically requires command subjunctive
→ IT + WAS + [bossy adjective] + THAT + subject + bare infinitive (base form of verb)
Correct:
It was necessary that he fill out papers to obtain a work visa.Correct:
It was imperative that she report the crime she witnessed.•
twice as much as is nonsensical: what does "much" refer to? The quarters? Their size? Weight?
ELIMINATE D
Quote:
E)
quarters were necessarily half as big as
the half dollar• this option switches the order of the quarter and half dollar in the comparison and uses different but correct math—
this rearrangement is perfectly fine.Logically, the sentences are identical.
• The problem? Plural
quarters and singular
the half dollar are not parallel.
ELIMINATE E
COMMENTSmcmoorthy and
vivekdixit07 , welcome to SC Butler.
These answers are mostly excellent and mostly spot-on.
(Small reminder that applies in a couple of places: explain.)
Nice work.
Happy New Year, everyone!