Sentence correction comparisons
51 flashcards covering Sentence correction comparisons for the GMAT Verbal section.
Sentence correction comparisons involve identifying and fixing errors in how sentences compare people, things, or ideas. At its core, this topic requires understanding when and how to use words like "like," "as," "than," or "from" to create logical, parallel structures. For instance, you might encounter a sentence that incorrectly compares a person to an action, which can make the meaning unclear or grammatically wrong. Mastering this helps build precise language skills essential for effective writing and communication.
On the GMAT Verbal section, sentence correction questions often feature comparisons in multiple-choice formats, where you select the best version of a sentence from several options. Common traps include faulty parallels, such as comparing unlike elements (e.g., a group to an individual), or misusing idiomatic expressions that alter the sentence's logic. Focus on checking for grammatical consistency, logical meaning, and proper word choice to avoid these pitfalls, as they test your ability to spot subtle errors quickly.
Always ensure the elements being compared are parallel in structure and category.
Terms (51)
- 01
Like vs. As
In comparisons, use 'like' before a noun or phrase to show similarity, and 'as' before a clause or to indicate role or function, ensuring the structure fits the context.
- 02
Such as vs. Like
Use 'such as' to introduce examples, while 'like' is for general comparisons; avoid confusing them to prevent errors in specificity.
- 03
Parallelism in Comparisons
When comparing elements, ensure they are in the same grammatical form, such as both nouns or both clauses, to maintain balance and clarity.
- 04
Illogical Comparisons
Avoid comparing dissimilar things, like a whole to a part, by ensuring the entities being compared are logically equivalent.
- 05
Than in Comparisons
Use 'than' in comparative structures to indicate a difference, followed by a clause or phrase that parallels the first element.
- 06
As...As Structure
Employ 'as...as' for equality comparisons, with the same grammatical structure on both sides to accurately show no difference.
- 07
More vs. Most
Use 'more' for comparisons between two items and 'most' for three or more, ensuring adjectives are correctly modified.
- 08
Fewer vs. Less
Apply 'fewer' to countable nouns and 'less' to uncountable nouns in comparisons to convey accurate quantity differences.
- 09
Comparative Adjectives
Form comparative adjectives by adding '-er' to short words or using 'more' before longer ones, always in the context of two items.
- 10
Superlative Adjectives
Use superlative adjectives with '-est' or 'most' to compare one item against three or more, highlighting the extreme.
- 11
Not Only...But Also in Comparisons
In comparisons, ensure 'not only...but also' maintains parallel structure to correctly emphasize additional qualities.
- 12
Comparing Quantities
When comparing amounts, use words like 'more' or 'less' accurately, distinguishing between countable and uncountable nouns.
- 13
Pronoun Agreement in Comparisons
Ensure pronouns in comparisons agree in number and case with the nouns they replace to avoid ambiguity.
- 14
Modifiers in Comparisons
Place modifiers correctly within comparisons to clearly modify the intended element without altering the meaning.
- 15
Idiomatic Expressions for Comparisons
Common idioms like 'compared to' for similarities and 'compared with' for differences must be used appropriately in sentence structures.
- 16
Elliptical Comparisons
In comparisons, words can be omitted if understood from context, but ensure the remaining structure remains grammatically correct.
- 17
Double Comparisons
Avoid using two comparative forms together, like 'more better,' as it creates redundancy and incorrect grammar.
- 18
Faulty Equivalence in Comparisons
Ensure that compared items are equivalent in type, such as both groups or both individuals, to prevent logical errors.
- 19
Using Other or Else in Comparisons
In comparisons involving superlatives or exclusions, include 'other' or 'else' to clarify that the item is not part of the group being compared.
- 20
Comparisons with Numbers
When comparing numerical values, use precise language like 'greater than' to maintain accuracy and avoid misinterpretation.
- 21
Percentages in Comparisons
Compare percentages correctly by ensuring the base is the same and using appropriate comparative words for clarity.
- 22
Ratios in Comparisons
Express ratios in comparisons using standard forms like 'to' or 'as...as' to accurately reflect proportional relationships.
- 23
Time Expressions in Comparisons
Use time-related words in comparisons, such as 'earlier than,' ensuring they align with the timeline and context.
- 24
Adverbial Comparisons
Compare actions or manners with adverbs in the correct form, like 'faster than,' to describe degrees of activity.
- 25
Adjectival Comparisons
Use adjectival forms in comparisons to describe qualities, ensuring they follow rules for regular and irregular adjectives.
- 26
Strategy for Spotting Comparison Errors
To identify errors, check if compared elements are parallel and logical, then verify word choice like 'like' versus 'as'.
- 27
Common Trap: Entity vs. Attribute
A frequent error is comparing an entity to an attribute, such as a person to their action; always compare like to like.
- 28
Absolute Adjectives in Comparisons
Avoid using absolute adjectives like 'unique' in comparisons, as they imply no degrees and cannot be intensified.
- 29
Irregular Comparatives
Words like 'good' become 'better' and 'best,' so memorize these irregular forms for accurate use in comparisons.
- 30
False Equalities
In comparisons, do not imply equality where none exists, such as using 'equals' incorrectly in non-mathematical contexts.
- 31
Comparisons with Possessives
Ensure possessives in comparisons are placed correctly to avoid ambiguity in ownership or relationship.
- 32
Subtle Parallelism Issues
Even in complex sentences, maintain parallelism in comparisons by matching verb tenses and structures precisely.
- 33
Overuse of Comparatives
Avoid stacking multiple comparatives in one sentence unless they logically build on each other without confusion.
- 34
Comparisons in Complex Sentences
In sentences with clauses, ensure comparisons are clear and do not get lost amid subordinate structures.
- 35
Negative Comparisons
Use structures like 'not as...as' for negative comparisons, maintaining parallel form to express inequality.
- 36
Quantity Words in Comparisons
Words like 'many' or 'much' must be used correctly in comparisons to differentiate between countable and uncountable items.
- 37
Idioms with Than
Certain phrases with 'than' are idiomatic, so use them as standard, like 'other than,' in comparative contexts.
- 38
Avoiding Ambiguity in Comparisons
Phrase comparisons to eliminate multiple interpretations, ensuring the intended meaning is evident.
- 39
Worked Example: Like vs. As
In a sentence, 'She runs like a cheetah' uses 'like' for comparison, while 'He acted as his brother would' uses 'as' for a clause.
- 40
Worked Example: Parallel Structure
Correct: 'The book is more interesting than the movie.' Incorrect: 'The book is more interesting than the movie's plot,' if not intended.
- 41
Worked Example: Illogical Comparison
Correct: 'The climate in Alaska is colder than in Florida.' Incorrect: 'The climate in Alaska is colder than Florida,' as it compares climate to a place.
- 42
Worked Example: Than Usage
Proper: 'She is taller than he is.' This ensures parallel structure by implying the full clause.
- 43
Worked Example: Fewer vs. Less
Use 'fewer apples' in comparisons for countable items, and 'less water' for uncountable, as in 'I have fewer than ten apples.'
- 44
Worked Example: Superlatives
In a group of three, say 'This is the best option,' but for two, use 'better than' to avoid errors.
- 45
Worked Example: Elliptical Form
Correct: 'She runs faster than he does,' where 'does' is elliptical but understood.
- 46
Worked Example: Other in Comparisons
Say 'Mount Everest is higher than any other mountain' to exclude itself from the comparison.
- 47
Advanced Trap: Hidden Comparisons
In nuanced sentences, comparisons may be implied; identify and verify their logic even if not explicit.
- 48
Advanced: Layered Comparatives
In sentences with multiple levels, ensure each comparative is independent and correctly formed.
- 49
Advanced: Idiomatic Nuances
Subtle differences, like 'in comparison to' versus 'in contrast to,' affect meaning in precise GMAT contexts.
- 50
Advanced: Quantitative Precision
When comparing data, use exact terms to avoid implying mathematical errors, such as in percentages.
- 51
Advanced Strategy: Elimination
On the test, eliminate options with faulty comparisons first to narrow choices efficiently.