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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
so do I
Grammar usage guide and real-world examplesUSAGE SUMMARY
"so do I" is correct and usable in written English.
You can use it when you are agreeing with a statement someone has just made. Example: I'm looking forward to the weekend, and so do I.
✓ Grammatically correct
News & Media
Food
Sports
Lifestyle
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
59 human-written examples
"So do I. "So do I.
News & Media
Well, so do I.
News & Media
Frankly, so do I.
News & Media
And so do I".
News & Media
So do I, sir. So do I.
News & Media
Then again, so do I".
News & Media
So, do I buy this?
News & Media
Oh, Princeton, so do I!
News & Media
"So do I," I parried.
News & Media
"So do I," Berkman said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
So did I, probably.
News & Media
Expert writing Tips
Best practice
Use "so do I" after someone has made a statement to express that you share the same feeling, desire, or experience. Ensure the auxiliary verb matches the original statement's tense and form. For instance, if someone says, "I am tired", you would respond, "So am I".
Common error
Avoid using the wrong auxiliary verb. For example, if someone says, "I have been to Paris", don't respond with "So do I"; the correct response is "So have I".
Source & Trust
89%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "so do I" is to express agreement with a preceding statement. Ludwig AI confirms its correct usage for this purpose, as evidenced by numerous examples of the pattern.
Frequent in
News & Media
68%
Food
6%
Sports
4%
Less common in
Lifestyle
4%
Science
2%
Wiki
2%
Ludwig's WRAP-UP
In summary, "so do I" is a versatile phrase used to express agreement or shared sentiment. Ludwig AI confirms the grammatical correctness and usability of this phrase in written English. It is commonly found in news, media and lifestyle contexts and maintains a neutral register. While "so do I" is appropriate in many situations, you can also consider alternatives such as "me too", "I also", or "same here" for a more informal tone, or "likewise" for increased formality. Remember to match the auxiliary verb tense with the original statement to avoid grammatical errors. With its widespread use and clear meaning, "so do I" remains a valuable tool for effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
me too
A simple and informal way to express agreement.
I also
A more direct and slightly less emphatic way of expressing agreement.
same here
An informal way to indicate that one's situation or feeling is the same.
likewise
A more formal way to express agreement or a similar sentiment.
I feel the same way
Expresses agreement in feeling or opinion, adding more detail.
I concur
A very formal and strong way to express agreement.
that's how I feel too
Emphasizes the shared feeling or opinion.
I agree
A direct and common way to express agreement.
I have the same opinion
Highlights the shared opinion more explicitly.
my thoughts exactly
Expresses complete agreement, indicating that the other person has perfectly articulated one's own thoughts.
FAQs
How to use "so do I" in a sentence?
Use "so do I" to express agreement with a previous statement. For instance, if someone says "I like pizza", you can respond with "So do I" to show you also like pizza.
What can I say instead of "so do I"?
Which is correct, "so do I" or "so I do"?
"So do I" is correct for expressing agreement. "So I do" is grammatically incorrect in this context.
What's the difference between "so do I" and "me too"?
"So do I" follows a more formal grammatical structure, mirroring the auxiliary verb of the statement you're agreeing with. "Me too" is a simpler, more informal expression of agreement.
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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
89%
Authority and reliability
4.8/5
Expert rating
Real-world application tested