English Language Arts
Grade 4
15 min
Avoid double, illogical, and unclear comparisons
Avoid double, illogical, and unclear comparisons
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Introduction & Learning Objectives
Learning Objectives
Identify a double comparison in a sentence.
Correct a double comparison by choosing the single correct comparative form.
Recognize an illogical comparison that compares two unrelated things.
Rewrite an illogical comparison to make it clear and sensible.
Spot an unclear comparison where the second part of the comparison is missing.
Complete an unclear comparison by adding the necessary information.
Use helping verbs correctly within comparative sentences to express ideas clearly.
Have you ever heard someone say a pizza is 'more bigger' than another? 🤔 It sounds a little silly, right? Let's find out why!
Today, we are going to become comparison detectives! We will learn how to make our sentences super clear by avoiding common mistakes lik...
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Key Concepts & Vocabulary
TermDefinitionExample
ComparisonA way of showing how two or more things are similar or different from each other.The sun is brighter than the moon.
Comparative AdjectiveA word that compares one person, place, or thing to another. It often ends in '-er' or uses the word 'more'.My dog is *faster* than your dog. This movie is *more exciting* than the last one.
Double ComparisonA mistake where you use both '-er' and 'more' to compare something. You only need to use one!Incorrect: The giraffe is *more taller* than the zebra. Correct: The giraffe is *taller* than the zebra.
Illogical ComparisonA comparison that doesn't make sense because it compares two things that can't be compared in that way.Incorrect: The dog's bark is louder than the g...
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Key Rules & Conventions
The 'One or the Other' Rule
Use '-er' OR 'more', but never both together.
For most short adjectives (like 'tall'), add '-er' to compare (taller). For most long adjectives (like 'interesting'), use the word 'more' before it (more interesting). Using both, like 'more taller', is a double comparison.
The 'Apples to Apples' Rule
Compare similar things to similar things.
Make sure your comparison is logical. You can compare the height of two trees, but you can't compare the height of a tree to the smell of a flower. The things you compare should make sense together.
The 'Finish the Thought' Rule
Always state what you are comparing something TO.
When you say something i...
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Challenging
All of the following sentences use a helping verb and contain a comparison error. Which error is a DIFFERENT TYPE than the others?
A.This ice cream is the most best.
B.He was running more faster than before.
C.That is the most silliest thing I have heard.
D.My project is better than any project in the class.
Challenging
Why is the comparison in the sentence 'The coach *should have helped* the goalie more' considered weak or unclear in formal writing?
A.The helping verbs 'should have' express an opinion, not a fact.
B.It is unclear what 'more' is being compared to (More than what? More than he did? More than he helped other players?).
C.The word 'goalie' is slang and should be 'goalkeeper'.
D.The sentence ends with the word 'more', which is grammatically incorrect.
Challenging
Explain the logical flaw in this sentence: 'The Amazon River *is* longer than any river in the world.'
A.The Amazon River is not the longest river in the world.
B.The helping verb 'is' should be 'was' because the length was measured in the past.
C.Because the Amazon River is a river in the world, the sentence is illogically stating that the river is longer than itself.
D.The word 'longer' is too simple; it should be 'more lengthy'.
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