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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
they do too
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they do too" is correct and usable in written English.
It can be used to agree with a statement that someone else has made, indicating that the subject also performs the action or holds the belief mentioned. Example: "I think cats are the best pets." "They do too, especially when they cuddle."
✓ Grammatically correct
News & Media
Alternative expressions(2)
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
55 human-written examples
They do, too.
News & Media
Well, they do, too.
News & Media
The Bears believe they do, too.
News & Media
We understand that, and they do too.
News & Media
In too many cases, they do too little.
News & Media
If they do too much, their growth could slow sharply.
News & Media
"They do too much dancing and partying and all that".
News & Media
If they do too little, they invite higher inflation and a bigger tightening later.
News & Media
"That way I freshen up my lobby each year and they do, too," he said.
News & Media
I'm not saying you shouldn't try to win, but, sometimes, they do too much.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Are they doing too much homework?
News & Media
Expert writing Tips
Best practice
Use "they do too" to provide concise agreement with a previous statement. For variety, consider alternatives like "so do they" or "they also do".
Common error
Avoid using "they do too" in situations where the context requires a more specific verb or clarification. Ensure the reference is clear to prevent ambiguity.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they do too" primarily functions as an elliptical construction used to express agreement or reciprocation. As Ludwig AI explains, it confirms that the subject performs the same action or shares the same sentiment previously mentioned. Examples show its use across diverse contexts.
Frequent in
News & Media
87%
Wiki
3%
Science
3%
Less common in
Formal & Business
2%
Encyclopedias
1%
Reference
1%
Ludwig's WRAP-UP
In summary, the phrase "they do too" is a grammatically correct and very common way to express agreement or reciprocation, as affirmed by Ludwig AI. Predominantly found in News & Media, the phrase serves to succinctly confirm shared actions or sentiments. While versatile, it's best used when the context is clear to avoid ambiguity. Consider alternatives like "so do they" or "they also do" for stylistic variation. The most authoritative sources using this phrase include The New York Times, The Guardian, and The Economist, solidifying its place in common English usage.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
so do they
Inversion of subject and auxiliary verb for emphasis.
they also do
Uses "also" as an adverb to indicate addition.
they too do
Rearranges the word order for a slightly different emphasis.
they as well do
Uses "as well" to express addition.
they, in addition, do
Adds "in addition" for a more formal tone.
they reciprocate
Uses a single verb to convey the mutual action.
they concur
Uses "concur" to indicate agreement.
they agree too
Emphasizes agreement with "agree" and "too".
they feel the same way
Expresses a shared sentiment or opinion.
they have the same opinion
Specifically refers to sharing the same opinion.
FAQs
How to use "they do too" in a sentence?
Use "they do too" to express agreement or reciprocation following a statement about an action or feeling. For example, "I enjoy hiking, and "they do too"."
What can I say instead of "they do too"?
You can use alternatives like "so do they", "they also do", or "they feel the same way" depending on the context.
Which is correct, "they do too" or "they too"?
"They too" implies inclusion or addition, whereas ""they do too"" indicates agreement or reciprocation regarding an action or feeling. The choice depends on the intended meaning.
What's the difference between "they do too" and "they do as well"?
"They do too" is more concise and commonly used in informal contexts to show agreement. "They do as well" is slightly more formal and can be used to add an additional point.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested