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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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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that I

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "that I" is correct and usable in written English. You can use it when referring to something that you have done or experienced, often in a dependent clause. Example: "I remember the day that I first learned to ride a bike." Alternative expressions include "which I," "that you," and "who I."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Suppose that (i ) holds.

" 'Oh, that,' I said.

"What's that?" I pointed.

News & Media

The New York Times

For that, I envy.

News & Media

The New Yorker

With that, I agree.

News & Media

The New York Times

"Why's that?" I asked.

News & Media

The New Yorker

"What's that?" I asked.

"Play that," I said.

News & Media

The New Yorker

"What's that?" I said.

That, I thought, was love.

News & Media

The New York Times

By that, I mean successful.

Show more...

Expert writing Tips

Best practice

Retain the full phrase in academic or legal writing to ensure maximum clarity and to avoid any potential ambiguity in complex sentences.

Common error

Avoid overusing the word 'that' multiple times in the same sentence, as it can lead to a 'stuttering' effect that distracts the reader. If you find yourself using it twice in close proximity, try deleting one or rephrasing the sentence using "which I" or simply omitting the pronoun.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

96%

Authority and reliability

4.9/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "that I" primarily functions as a complementizer or a relative pronoun followed by a first-person singular subject. According to Ludwig AI, it is used to introduce dependent clauses that provide essential information about a preceding noun or to follow reporting verbs like 'think', 'say' or 'agree'.

Expression frequency: Very common

Frequent in

News & Media

75%

Formal & Business

15%

Science

10%

Less common in

Wiki

5%

Encyclopedias

3%

Social Media

2%

Ludwig's WRAP-UP

In conclusion, "that I" is a robust and indispensable phrase in English writing. Ludwig AI confirms its status as a grammatically correct and highly frequent construction across various domains. Whether you are reporting a speech, describing a personal experience or defining a specific object, "that I" provides the necessary structural support to connect your ideas. While it is often omissible for a swifter narrative pace, retaining it ensures precision and clarity, especially in complex or formal sentences. Writers should feel confident using it while remaining mindful of sentence rhythm and the possibility of more descriptive alternatives like "in which I" or "given that I".

FAQs

How do I use "that I" correctly in a sentence?

The phrase "that I" acts as a connector between a main clause and a subordinate clause. For example: "I remember the day that I met you."

Can I omit "that" from the phrase?

Yes, in many cases you can simply use "I". In the sentence "The book that I read was great", omitting it to say "The book I read was great" is often more natural.

What is the difference between "that I" and "which I"?

Use "that I" for restrictive clauses that are essential to the meaning of the sentence. Use ""which I"" for non-essential information, usually set off by commas.

Is "that I" considered formal or informal?

It is neutral and widely accepted in all registers. However, omitting the 'that' is slightly more informal, while using "the fact that I" is more formal.

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Source & Trust

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Authority and reliability

4.9/5

Expert rating

Real-world application tested

Most frequent sentences: