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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
which can affect
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which can affect" is grammatically correct and commonly used in written English.
It is typically used to introduce a dependent clause that describes a particular aspect or effect of something. Here is an example: "The new policy, which can affect all employees, has caused some concern among the staff." In this sentence, "which can affect all employees" provides additional information about the policy and its potential impact on a certain group of people.
✓ Grammatically correct
News & Media
Science
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
The researchers excluded children with learning disabilities and sleep problems, which can affect cognitive skills.
News & Media
There is no cure for this autoimmune disease, which can affect the skin, blood and joints.
News & Media
Each meta-search site configures its technology and accesses fares slightly differently, which can affect results.
News & Media
They are also complicated to understand, which can affect take-up.
News & Media
Be warned: mobile phone and satellite service is sketchy, which can affect even the best GPS car system.
News & Media
"You do your best to enact policies, which can affect behavior if not what is in people's hearts.
News & Media
"But there are all sorts of other factors which can affect numbers, especially the situation in places like Syria.
News & Media
"We are trying to address food security, which can affect the growth and health of our people.
News & Media
which can affect the efficiency of computation off-loading.
And 14% of us suffer from osteoarthritis, which can affect the ankles and knees.
News & Media
It's also continuously changing the product, which can affect short-term revenues.
News & Media
Expert writing Tips
Best practice
When using "which can affect", ensure the clause is nonrestrictive and set off by commas. This clarifies that the information is additional and not essential to the sentence's meaning.
Common error
Avoid using "that" instead of "which" when introducing a nonrestrictive clause. "That" is typically used for restrictive clauses that are essential to the sentence's meaning, while "which" introduces additional, nonessential information.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which can affect" primarily functions as a relative clause, specifically a nonrestrictive (or nonessential) clause. It introduces additional information about a noun or noun phrase without being crucial to the sentence's core meaning. Ludwig's examples showcase its role in providing supplementary details.
Frequent in
Science
36%
News & Media
40%
Wiki
4%
Less common in
Formal & Business
2%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "which can affect" is a versatile and grammatically sound phrase used to introduce nonrestrictive clauses that elaborate on potential influences or consequences. According to Ludwig, it serves to add extra information. It's common across various domains, particularly in news, science, and general informational contexts. When using this phrase, remember to enclose it with commas to signal its nonessential nature. Alternatives like "that may influence" or "that could impact" can be used to provide subtle variations in meaning, as demonstrated by Ludwig's examples.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that may influence
Replaces "can affect" with "may influence", suggesting a potential impact rather than a definite one.
that has an effect on
Substitutes "which can affect" with a more descriptive phrase, emphasizing the presence of an influence.
that could impact
Uses "impact" instead of "affect", implying a potentially significant influence.
with the potential to alter
Replaces "which can affect" with a phrase highlighting the potential for change.
that might modify
Offers a more subtle way of indicating change or influence.
that is liable to influence
Indicates a tendency or likelihood of influencing something.
which may determine
Shifts the focus to a more decisive influence, suggesting that it might dictate an outcome.
that has consequences for
Emphasizes the results or outcomes of an influence.
that contributes to
Highlights the role of something in causing or bringing about an effect.
which is relevant to
Indicates that something has a bearing on or connection to a particular matter.
FAQs
How do I use "which can affect" in a sentence?
Use "which can affect" to add extra information about something. For example, "The new policy, "which can affect" all employees, will be implemented next month."
Is "which can affect" formal or informal?
The phrase "which can affect" is suitable for both formal and informal contexts. Its appropriateness depends more on the surrounding language and the overall tone of the writing.
What are some alternatives to "which can affect"?
You can use alternatives such as "that may influence", "that could impact", or "that has an effect on" depending on the nuance you want to convey.
What's the difference between "which can affect" and "that can affect"?
"Which can affect" introduces a nonrestrictive clause, adding extra information, while "that can affect" introduces a restrictive clause, essential for defining the subject. For example, "The policies "that can affect" employee morale will be reviewed" (essential) versus "The new policy, "which can affect" all employees, will be implemented next month" (extra information).
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested