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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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so do they

Grammar usage guide and real-world examples

USAGE SUMMARY

'so do they' is correct and usable in written English.
You can use it when you want to make a comparison between two similar actions or ideas. For example, "John likes to ski in the winter, and so do they."

✓ Grammatically correct

News & Media

Science

Academia

Wiki

Human-verified examples from authoritative sources

Exact Expressions

56 human-written examples

So do they".

And so do they.

News & Media

The New York Times

So do they matter?

News & Media

The New York Times

So do they, probably.

News & Media

The Guardian

When the body dies, so do they.

News & Media

The Economist

If so, do they have criminals?

News & Media

The New Yorker

When GDP slows down, so do they.

News & Media

The Economist
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

4 human-written examples

So did they.

News & Media

The New York Times

More importantly, so did they.

News & Media

The New York Times

But so did they.

News & Media

The New York Times

So did they graduate with honors?

News & Media

The New York Times

Expert writing Tips

Best practice

Use "so do they" to succinctly express agreement or shared behavior without repeating the original verb phrase.

Common error

Ensure the auxiliary verb ("do") matches the tense and number of the original statement. For example, if the original statement uses "is", the agreeing phrase should use "so are they" not "so do they".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "so do they" functions as an elliptical construction indicating agreement or shared action with a preceding statement. As Ludwig AI confirms, it expresses that the subject 'they' performs the same action as someone or something already mentioned.

Expression frequency: Very common

Frequent in

News & Media

60%

Science

15%

Academia

10%

Less common in

Wiki

5%

Formal & Business

5%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "so do they" is a grammatically correct and frequently used construction for expressing agreement or indicating shared action. As Ludwig AI confirms, it's a concise way to show that the subject 'they' performs the same action as previously mentioned. Analysis of the examples reveals its prevalence in News & Media, Science, and Academic contexts, suggesting a neutral to slightly formal register. When using the phrase, ensure the auxiliary verb matches the tense of the original statement. Alternatives include "they do too" and "they also do", depending on the desired tone and emphasis.

FAQs

How is "so do they" used in a sentence?

The phrase "so do they" indicates that the subject 'they' performs the same action as someone previously mentioned. For example, "John likes to read, and "so do they"" means that 'they' also like to read.

What are some alternatives to "so do they"?

Alternatives to "so do they" include "they do too", "they also do", or "the same applies to them". The best choice depends on the context and desired level of formality.

Is it correct to say "so they do" instead of "so do they"?

While "so they do" might be grammatically understandable, "so do they" is the standard and more grammatically correct way to express agreement or shared action in English. It uses inversion to show agreement.

What's the difference between "so do they" and "so are they"?

"So do they" is used when the original statement involves an action verb (e.g., "They run fast"). "So are they" is used when the original statement involves a state of being (e.g., "They are happy"). Using the incorrect auxiliary verb can lead to grammatical errors.

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Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: