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Prepositions after verbs

Skim through or skim over?

Both skim through and skim over are idiomatic. Skim through usually focuses on quick reading from beginning to end, while skim over often means giving only brief attention.

Quick answer

How do skim through and skim over differ?

Use skim through for quickly reading or checking material. Use skim over for treating details lightly or briefly discussing them.

I skimmed through the report before the meeting.
The lecturer skimmed over the final chapter.
She skimmed through her emails on the train.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
skim through + document

Reading something quickly

Use through for fast reading or reviewing from one part to another.

He skimmed through the newspaper.
We skimmed through the application forms.
2
skim over + details

Giving brief attention

Use over when details are not discussed deeply.

The article skimmed over the legal issues.
She skimmed over the introduction.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
skim through
I skimmed through the manual.
read or checked something quickly
skim over
The speaker skimmed over the statistics.
dealt with something briefly or superficially
read through
She read through the contract carefully.
read all of something, usually attentively
glance at
He glanced at the timetable.
looked quickly at something

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using skim for careful reading

Skim implies speed and limited attention.

✕ I skimmed the contract very carefully for errors. ✓ I read through the contract carefully for errors.

Confusing through and over

Through suggests moving across the material, while over suggests brief treatment.

✕ The teacher skimmed through the topic without explanation. ✓ The teacher skimmed over the topic without explanation.

Quick practice

Choose the expression that matches the intended meaning.

1. She skimmed ___ the magazine while waiting.
2. The report skimmed ___ several important concerns.
3. I only had time to skim ___ the emails.

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Frequently asked questions

Can skim through and skim over both refer to reading?

Yes, but skim through is more strongly connected with reading from section to section.

Is skim over always negative?

No. It simply means giving limited attention, though it can imply insufficient detail.

Can I use skim without a preposition?

Yes. For example: I skimmed the article before class.

sack, by, sack, for, sack, from "sacrifice for" or "sacrifice to"? sail from, in, for, to or through? "salvage from" or "salvage in"? sanction by, for, in, with or according? satisfy with, by, in, about or after? "saturate with" or "saturate in"? save by, for, from, on or in? "say in", "say about" or "say to"? "scan for", "scan in" or "scan through"? "scar by" or "scar on"? scatter in, across, around, throughout or on?

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