Common English Mistakes by Korean Speakers

This page focuses on errors typically made by native Korean speakers from South Korea when writing in English.

Mistake Example #1

Academic Writing / Academic Journal Article

Incorrect word order in complex sentences

In recent studies, it has been observed that climate change impactssignificantlyimpacts the biodiversity inof various ecosystems. The researchers, who conducted the study, found that whenthe temperature rises, species distribution patterns alter dramatically. They explained that this phenomenon, they explained, leads to not only habitat loss, but also to increased competition among species for resources.


Text corrected by:
Jennifer, Detroit, Michigan USA

"Good job! I needed to change the word order in certain sentences, and I also polished up the text."

In recent studies, it has been observed that climate change significantly impacts the biodiversity of various ecosystems. The researchers who conducted the study found that when the temperature rises, species distribution patterns alter dramatically. They explained that this phenomenon leads to not only habitat loss, but also to increased competition among species for resources.

In recent studies, it has been observed that climate change impacts significantly the biodiversity in various ecosystems. The researchers, who conducted the study, found that when temperature rises, species distribution patterns alter dramatically. This phenomenon, they explained, leads to not only habitat loss but also to increased competition among species for resources.

Mistake Example #2

Business Writing / Annual Report

Incorrect word order in complex sentences

In the year 2023, our company achieved significant growth, which was possible because the dedication of our team and the support from our partners. The revenue increased by 15%, and it is expected that next year, we will continue to expand our market presence. Although challenges were faced, such as the global supply chain disruptions, we managed to overcome them through strategic planning and innovation.


Text corrected by:
Jennifer, Detroit, Michigan USA

"The word order was fine, but there are other things I would change."

In the year 2023, our company achieved significant growth, which was possible because the dedication of our team and the support from our partners. The revenue increased by 15%, and it is expected that next year, we will continue to expand our market presence. Although challenges were faced, such as the global supply chain disruptions, we managed to overcome them through strategic planning and innovation.

In the year 2023, our company achieved significant growth, which was possible because the dedication of our team and the support from our partners. The revenue increased by 15%, and it is expected that next year, we will continue to expand our market presence. Although challenges were faced, such as the global supply chain disruptions, we managed to overcome them through strategic planning and innovation.

Mistake Example #3

Educational & Instructional Writing / E-learning Module

Confusion with prepositions ('in', 'on', 'at')

Welcome to the E-learning Module about English grammar. In this lesson, we will focus on using prepositions correctly in different contexts. Many learners have difficulty tochooseing the right prepositions, especially in, on, and at. For example, you might say "I study English at the morning," but it is more correct to say "in the morning." Understanding these differences will help you to improve your English skills oin daily conversations.


Text corrected by:
Jennifer, Detroit, Michigan USA

"I fixed an issue with a preposition (not in any of the example sentences) and made some additional changes."

Welcome to the E-learning Module about English grammar. In this lesson, we will focus on using prepositions correctly in different contexts. Many learners have difficulty choosing the right prepositions, especially in, on, and at. For example, you might say "I study English at the morning," but it is more correct to say "in the morning." Understanding these differences will help you to improve your English skills in daily conversations.

Welcome to the E-learning Module about English grammar. In this lesson, we will focus on using prepositions correctly in different contexts. Many learners have difficulty to choose the right preposition, especially in, on, and at. For example, you might say "I study English at the morning," but it is more correct to say "in the morning." Understanding these differences will help you to improve your English skills on daily conversations.

Mistake Example #4

ESL Writing / Email Practice

Incorrect word order in complex sentences

Dear Mr. Smith, I hope this email finds you well. I wanted to discussabout the project proposal we submitted last week. When you have time, could you please review it and let me know your thoughts? Also,I amalso wondering ifnext week we can schedule a meetingnext week to go over any questions you might have. Thank you for your attention to this matter.


Text corrected by:
Michele A., Boston, Massachusetts; United States

"Changes I made were mostly to improve fluidity and readability. Otherwise, the ideas in this text are clearly expressed."

Dear Mr. Smith, I hope this email finds you well. I wanted to discuss the project proposal we submitted last week. When you have time, could you please review it and let me know your thoughts? I am also wondering if we can schedule a meeting next week to go over any questions you might have. Thank you for your attention to this matter.

Dear Mr. Smith, I hope this email finds you well. I wanted to discuss about the project proposal we submitted last week. When you have time, could you please review it and let me know your thoughts? Also, I am wondering if next week we can schedule a meeting to go over any questions you might have. Thank you for your attention to this matter.

Mistake Example #5

Fiction & Creative Writing / Creative Nonfiction

Confusion with prepositions ('in', 'on', 'at')

IDuring the quiet morning atin the park, I sat on the bench and watched the sun rise ion the horizon. The air was crisp and fresh, and I felt peace in my heart as I listened to the birds singing oin the trees. It was a moment of reflection, where I thought about my life and the choices I have made atin the past.


Text corrected by:
Camille, Maryland, USA

"Very well done. I just corrected some prepositions. "

During the quiet morning in the park, I sat on the bench and watched the sun rise on the horizon. The air was crisp and fresh, and I felt peace in my heart as I listened to the birds singing in the trees. It was a moment of reflection, where I thought about my life and the choices I have made in the past.

In the quiet morning at the park, I sat on the bench and watched the sun rise in the horizon. The air was crisp and fresh, and I felt peace in my heart as I listened to the birds singing on the trees. It was a moment of reflection, where I thought about my life and the choices I have made at the past.

Mistake Example #6

Government & Policy Writing / Government Memo

Omitting articles ('a', 'an', 'the')

To: Department Heads Subject: Implementation of New Policy We are pleased to announce theimplementation of anewpolicy regarding workplace safety. Ppolicy awhimsch towill enhance safety measures and ensure compliance with regulations. Please review documthent attacheddocument and prepare feedback by theend of theweek. Your cooperation is essential for thesuccess of this initiative.


Text corrected by:
Gregg, Los Angeles, CA

"This needed some corrections to add missing articles ("the," "an," etc.), as well as some other tweaks."

To: Department Heads Subject: Implementation of New Policy We are pleased to announce the implementation of a new workplace policy which will enhance safety measures and ensure compliance with regulations. Please review the attached document and prepare feedback by the end of the week. Your cooperation is essential for the success of this initiative.

To: Department Heads Subject: Implementation of New Policy We are pleased to announce implementation of new policy regarding workplace safety. Policy aims to enhance safety measures and ensure compliance with regulations. Please review document attached and prepare feedback by end of week. Your cooperation is essential for success of this initiative.

Mistake Example #7

Healthcare & Medical Writing / Clinical Study

Incorrect word order in complex sentences

In this clinical study, we investigated how the new medication affectsed patients with chronic pain, whothey were recruited from three hospitals in Seoul. The results showed that, when patients took the medication, their pain levels significantly decreased, which it was measured using a standardized pain scale. Further research is needed to determine long-term effects, which theymay vary depending on individual patient characteristics.


Text corrected by:
Camille, Maryland, USA

"Looks very good overall. I have addressed word order and overall flow in a few places. "

In this clinical study, we investigated how the new medication affected patients with chronic pain who were recruited from three hospitals in Seoul. The results showed that when patients took the medication, their pain levels significantly decreased, as measured using a standardized pain scale. Further research is needed to determine long-term effects, which may vary depending on individual patient characteristics.

In this clinical study, we investigated how the new medication affects patients with chronic pain, who they were recruited from three hospitals in Seoul. The results showed that, when patients took the medication, their pain levels significantly decreased, which it was measured using a standardized pain scale. Further research is needed to determine long-term effects, which they may vary depending on individual patient characteristics.

Mistake Example #8

Job Applications & Professional Development / Career Portfolio

Incorrect word order in complex sentences

As a dedicated professional with over five years of experience in marketing, I have developed skills in digital strategy and content creation, which I believe arwill be valuable to your company. In my previous role, I led a teamsuccessfullyled a team to increase brand awareness by 30% within six months, demonstrating my ability to manage projects effectively. MI am confident that my passion for innovation and commitment to excellence, I am confident, will contribute significantly to your team.


Text corrected by:
Jennifer, Detroit, Michigan USA

"I changed the word order in certain sentences and made a couple of other minor tweaks. Nice work!"

As a dedicated professional with over five years of experience in marketing, I have developed skills in digital strategy and content creation, which I believe will be valuable to your company. In my previous role, I successfully led a team to increase brand awareness by 30% within six months, demonstrating my ability to manage projects effectively. I am confident that my passion for innovation and commitment to excellence will contribute significantly to your team.

As a dedicated professional with over five years of experience in marketing, I have developed skills in digital strategy and content creation, which I believe are valuable to your company. In my previous role, I led a team successfully to increase brand awareness by 30% within six months, demonstrating my ability to manage projects effectively. My passion for innovation and commitment to excellence, I am confident, will contribute significantly to your team.

Mistake Example #9

Journalism & Media / Editorial

Omitting articles ('a', 'an', 'the')

In recent years, climate change has becomean urgent issue that affects everyone globally. Many people in South Korea are beginning to realize theimportance of taking action to protect theenvironment. GThe government has introduced several initiatives to reduce carbon emissions, but more effort is needed from both public and private sectors to make asignificant impact.


Text corrected by:
Michele A., Boston, Massachusetts; United States

"I added articles before certain nouns according to proper English grammar. Otherwise, the ideas in this text are clearly expressed."

In recent years, climate change has become an urgent issue that affects everyone globally. Many people in South Korea are beginning to realize the importance of taking action to protect the environment. The government has introduced several initiatives to reduce carbon emissions, but more effort is needed from both public and private sectors to make a significant impact.

In recent years, climate change has become urgent issue that affects everyone globally. Many people in South Korea are beginning to realize importance of taking action to protect environment. Government has introduced several initiatives to reduce carbon emissions, but more effort is needed from both public and private sectors to make significant impact.

Mistake Example #10

Legal & Formal Writing / Agreement

Omitting articles ('a', 'an', 'the')

This Agreement is madefor the provision of services between Company and Client. for provision of sThervices. Parties agree to the terms outlined inthe document and will adhere to the specifiedconditions. Thispecified. Agreement shall commence onthe date of signing and remain in effect until terminated by either party.


Text corrected by:
Michele A., Boston, Massachusetts; United States

"I added articles before some of the nouns and made some additional changes to improve fluidity and make the English sound a bit more natural."

This Agreement is made for the provision of services between Company and Client. The Parties agree to the terms outlined in the document and will adhere to the specified conditions. This Agreement shall commence on the date of signing and remain in effect until terminated by either party.

This Agreement is made between Company and Client for provision of services. Parties agree to terms outlined in document and will adhere to conditions specified. Agreement shall commence on date of signing and remain in effect until terminated by either party.

Mistake Example #11

Marketing & Advertising Writing / Ad Copy

Incorrect word order in complex sentences

Discover the ultimate skincare solution with our new product line, designed to make your skin glow like never before. When you use our cream, your skin will feel smoother and more hydrated ithan everhas been. Try it today and see the difference foryourself,because your skin deserves the best care it can get.


Text corrected by:
Gregg, Los Angeles, CA

"This needed some correcting to fix word order issues."

Discover the ultimate skincare solution with our new product line, designed to make your skin glow like never before. When you use our cream, your skin will feel smoother and more hydrated than ever. Try it today and see the difference for yourself—because your skin deserves the best care it can get.

Discover the ultimate skincare solution with our new product line, designed to make your skin glow like never before. When you use our cream, your skin will feel smoother and more hydrated it ever has been. Try it today and see the difference yourself, because your skin deserves the best care it can get.

Mistake Example #12

Personal & Lifestyle Writing / Journal Entry

Confusion with prepositions ('in', 'on', 'at')

This modayrning, I went to the park. in the morning and iIt was so refreshing to see the flowers blooming. I met my friend at the park and we decided to have lunch onat a cafe nearby. We talked about our plans for the weekend and agreed to meet inat my house on Saturday.


Text corrected by:
Jennifer, Detroit, Michigan USA

"I fixed a couple of issues with prepositions and made a few additional changes. Well done!"

This morning, I went to the park. It was so refreshing to see the flowers blooming. I met my friend at the park and we decided to have lunch at a cafe nearby. We talked about our plans for the weekend and agreed to meet at my house on Saturday.

Today, I went to the park in the morning and it was so refreshing to see the flowers bloom. I met my friend at the park and we decided to have lunch on a cafe nearby. We talked about our plans for the weekend and agreed to meet in my house on Saturday.

Mistake Example #13

Social Media & Online Writing / Blog Post

Confusion with prepositions ('in', 'on', 'at')

I recently visited thebeautiful islandof Jeju and stayed ata cozy guesthouse nearthe beach. The weather was perfect, andI enjoyed walking in the sand and watchingthe sunset on the horizon. If you ever find yourself in Jeju, make sure to try thelocal seafood at one of the many restaurants on the coast.


Text corrected by:
Gregg, Los Angeles, CA

"This needed some tweaking for prepositional phrasing and proper use of articles."

I recently visited the beautiful island of Jeju and stayed at a cozy guesthouse near the beach. The weather was perfect—I enjoyed walking in the sand and watching the sunset on the horizon. If you ever find yourself in Jeju, make sure to try the local seafood at one of the many restaurants on the coast.

I recently visited beautiful island Jeju and stayed at cozy guesthouse near beach. The weather was perfect, and I enjoyed walking in the sand and watching sunset on the horizon. If you ever find yourself in Jeju, make sure to try local seafood at one of the many restaurants on the coast.

Mistake Example #14

Student / Admission Essay

Confusion with prepositions ('in', 'on', 'at')

I am excited to apply for the program inat your university. I have always been interested oin studying biology, and I believe your institution offers the best opportunities in this field. During my high school years, I participated atin various science competitions, which helped me develop a strong foundation in the subject. I am eager to continue my education at your esteemed university and contribute to the academic community.


Text corrected by:
Gregg, Los Angeles, CA

"This needed some adjusting for proper prepositional phrasing."

I am excited to apply for the program at your university. I have always been interested in studying biology, and I believe your institution offers the best opportunities in this field. During my high school years, I participated in various science competitions, which helped me develop a strong foundation in the subject. I am eager to continue my education at your esteemed university and contribute to the academic community.

I am excited to apply for the program in your university. I have always been interested on studying biology, and I believe your institution offers the best opportunities in this field. During my high school years, I participated at various science competitions, which helped me develop a strong foundation in the subject. I am eager to continue my education at your esteemed university and contribute to the academic community.

Mistake Example #15

Technical & Scientific Writing / Engineering Specification

Incorrect word order in complex sentences

The device, which weas designed to improve energy efficiency,it requires testing under various conditions to ensure optimalperformanceoptimal. In the initial phase, the components should be assembled carefully, and whenthe system, when it is activated,it must be monitored closely for any irregularities. TAfter the results, after they are collected,they will be analyzed to determine ifany modifications are necessary to meet the outlinedspecificationsoutlined.


Text corrected by:
Michele A., Boston, Massachusetts; United States

"I fixed the word order to reflect proper English usage and adjusted some of the phrasing for fluidity and readability."

The device, which was designed to improve energy efficiency, requires testing under various conditions to ensure optimal performance. In the initial phase, the components should be assembled carefully, and when the system is activated, it must be monitored closely for any irregularities. After the results are collected, they will be analyzed to determine if any modifications are necessary to meet the outlined specifications.

The device, which we designed to improve energy efficiency, it requires testing under various conditions to ensure performance optimal. In the initial phase, the components should be assembled carefully, and the system, when it is activated, must be monitored closely for any irregularities. The results, after they are collected, will be analyzed to determine if modifications are necessary to meet the specifications outlined.