What is the trick for affect and effect?

Affect is almost always the verb and effect is almost always the noun: the rain will affect the game, and the effect was obvious. The exceptions exist and they are rare enough that a seventh grader can safely ignore them.

Fewer for things you can count one by one, less for amounts you measure. Fewer students, less pressure. The supermarket sign that says ten items or less is the most famous wrong example in English.

Why are these harder than their and there?

Because the ear does not help. Principal and principle sound identical, affect and effect nearly so, and imply and infer sound different but sit so close in meaning that students swap them. There is no quick expansion test like they are, so the fix is knowing what each word means.

7th grade commonly confused words

7th grade commonly confused words worksheets

Commonly confused words are pairs that sound or look alike and mean different things. Seventh grade moves past their and there to the pairs that turn up in essays. Some still sound exactly alike, like principal and principle or council and counsel. Others only sound close (affect and effect, accept and except) or differ in meaning alone (fewer and less, imply and infer).

Free printable PDF worksheet, aligned to Common Core L.7.1.

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The kind of sentences you'll get

Circle the letter of the word that belongs in the sentence.

Read into the chapter before you decide. further · farther
Answer: further
Every club meets on Thursday robotics. except · accept
Our keeper’s strength is her positioning. principal · principle

Every print pulls a new set of sentences at this level, so a make-up test or a second sibling gets a different mix.

What's on a 7th grade sheet

7th grade sheets draw from 73 sentences, 10 to a page. None of these sentences are on 6th grade sheets.

Some of the answers:

elicitfartherlessloseadviceformerlyformallyimplyimminentcouncil

Choose the word. Circle the letter of the word that belongs in the sentence. 10 questions per page.
Fix it. Write the word in parentheses that belongs in the sentence. 8 sentences to fix per page.

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Most of these pairs have a one-line test that works every time, and the tests are worth writing on a card. Affect is usually the verb and effect is usually the noun. Fewer counts things you can count; less measures what you cannot. A speaker implies and a listener infers. Farther is physical distance and further is everything else; that is the careful-writing rule these sheets key, though many writers use further for distance too. Drill the tests rather than the sentences, because a student who knows the test can handle a pair they have never seen on a worksheet.

Watch for: Spellcheck won't catch these: 'there boots' is spelled correctly, it's just the wrong word. The apostrophe versions are always two words squeezed together: they're = they are, you're = you are, it's = it is or it has. Expanding them is the test.

Common questions about 7th grade commonly confused words

What is the trick for affect and effect?: Affect is almost always the verb and effect is almost always the noun: the rain will affect the game, and the effect was obvious. The exceptions exist and they are rare enough that a seventh grader can safely ignore them.
Fewer or less?: Fewer for things you can count one by one, less for amounts you measure. Fewer students, less pressure. The supermarket sign that says ten items or less is the most famous wrong example in English.
Why are these harder than their and there?: Because the ear does not help. Principal and principle sound identical, affect and effect nearly so, and imply and infer sound different but sit so close in meaning that students swap them. There is no quick expansion test like they are, so the fix is knowing what each word means.

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Aligned to Common Core L.7.1. Reviewed by the One more sheet team. Content version 241, updated October 2026.

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