
Many adult learners struggle with common English mistakes, from incorrect verb tenses to confusing word pairs like “their” and “there. Learning English as a second language is rewarding—but also challenging. Many learners, especially at the A2–B2 levels, make the same recurring grammar and vocabulary errors. Recognizing these common English mistakes is the first step toward fluency.
In this post, we’ll highlight the most frequent errors English learners make and offer practical ways to fix them.
Mistake:
“I told that I was tired.” ❌
Fix:
Use “say” without a person, and “tell” with a person.
✅ “I said that I was tired.”
✅ “I told him that I was tired.”
Tip: Remember: “tell + someone,” “say + something.”
Mistake:
“You like coffee?” ❌
Fix:
Use auxiliary verbs in questions.
✅ “Do you like coffee?”
This error is common among learners translating directly from their native language. Focus on standard English question patterns.
Mistake:
“I am go to the store yesterday.” ❌
Fix:
Use past simple for completed actions in the past.
✅ “I went to the store yesterday.”
Understanding verb tenses is essential for fluency. If you’re unsure, our English courses offer focused grammar practice.
Mistake:
“She is very very beautiful.” ❌
Fix:
Avoid repetition. Use a stronger word:
✅ “She is stunning.”
Expanding vocabulary helps you express yourself more accurately and naturally.
Mistake:
“I have many money.” ❌
Fix:
“Money” is uncountable, so use “much”:
✅ “I have much money.” or better, “I have a lot of money.”
Learning the difference between countable and uncountable nouns will improve your grammar and clarity.
Mistake:
“She is teacher.” ❌
Fix:
✅ “She is a teacher.”
Use “a” before words beginning with a consonant sound, and “an” before vowel sounds. Use “the” for specific nouns.
Mistake:
“I have 25 years.” ❌
Fix:
✅ “I am 25 years old.”
English structure differs from many languages. Avoid direct translation and instead learn expressions as phrases.
Mistake:
“She is married with a doctor.” ❌
Fix:
✅ “She is married to a doctor.”
Common problematic prepositions include:
Regular practice helps reinforce correct usage.
Mistake:
Pronouncing the “k” in “know” ❌
Fix:
Silent letters are common in English.
✅ “know” is pronounced /noʊ/
Use online tools or pronunciation guides.
Mistake:
“Sheeps are in the field.” ❌
Fix:
✅ “Sheep are in the field.”
Some words don’t follow regular plural rules. Study irregular plural forms to avoid confusion. These common English mistakes can be frustrating, but with the right tools, they’re easy to fix and learn from.

The classic book Common Mistakes in English by T. J. Fitikides identifies errors that learners frequently make—many of which are still relevant today. This includes misuse of prepositions, verb forms, articles, and irregular plurals, making it an excellent supplement to the issues we discussed earlier.
Some common incorrect prepositions include:
Example:
❌ “She accused him for stealing.”
✅ “She accused him of stealing.”
This ties back to mistake #8 in our list and shows how small changes in preposition use can make a big difference in meaning and accuracy.
Fitikides points out that learners often struggle with third-person singular verb endings (e.g., “He go” instead of “He goes”) and irregular verbs.
Example:
❌ “She walk to school every day.”
✅ “She walks to school every day.”
This supports what we discussed in mistake #3 regarding verb tenses.
One of the most common English mistakes is forgetting or misusing articles. According to Fitikides, this includes both overuse and omission.
Example:
❌ “She is teacher.”
✅ “She is a teacher.”
This reinforces our point #6. Articles are tricky but critical to correct sentence structure.
The guide emphasizes learning irregular plurals such as:
This mirrors mistake #10 from earlier. Memorizing irregular nouns is essential for sounding natural in English.
Fitikides proposes a helpful method to fix these errors long-term:
This method aligns perfectly with our earlier recommendation to use a correction journal and take regular practice tests like this one from Lingua Learn.
Here’s how Fitikides’ classic work reinforces the tips we’ve already shared:
Incorporating these timeless lessons into your English learning routine will help you avoid many of the most common English mistakes—especially those that confuse even intermediate learners.
Identifying common English mistakes is just the beginning. To truly improve your accuracy and confidence in English, you need a consistent strategy that helps you fix those errors and build stronger habits. One of the best ways to reduce common English mistakes is by keeping a correction journal and reviewing it regularly. Here are four effective ways to do that:
Before starting your English learning journey or switching to a new course, it’s crucial to know where you stand. Taking a proper language assessment helps determine your current proficiency level and highlights specific areas where you struggle. This ensures that your learning path is personalized, targeted, and effective—saving you time and frustration in the long run.
Self-study can be helpful, but if you want fast, focused improvement, a professional English course is essential. These programs are designed by experienced teachers who understand the challenges English learners face. Whether you need help with grammar, pronunciation, vocabulary, or writing, a structured course offers clear goals, feedback, and the opportunity to practice regularly in a supportive environment. A structured course will help you avoid the most common English mistakes and give you feedback from trained professionals.
Consistency is the key to mastering any language. Make English a part of your daily life by reading short articles, watching videos with subtitles, and listening to podcasts. Practice speaking aloud—even to yourself—to improve fluency. You can also create flashcards for the errors you often make and review them until the correct forms become automatic. Even 15–30 minutes a day can lead to big improvements over time.
One of the most powerful tools for language learners is a personal correction journal. Every time you make a mistake—whether it’s in writing, speaking, or during class—write it down. Then, write the correct version next to it. Try to note why the mistake happened and what the grammar rule or vocabulary explanation is. Over time, this becomes a personalized reference guide that helps you learn from your own patterns and avoid repeating errors.
By combining these four strategies, you’ll not only avoid common mistakes but also develop stronger communication skills, better comprehension, and greater confidence when using English in real-life situations.
Making mistakes is a natural part of learning English. But by identifying common English mistakes and taking steps to correct them, you’ll improve your fluency, confidence, and communication.
Whether you’re preparing for a job interview, studying abroad, or simply aiming to speak more naturally, avoiding these mistakes will help you sound more like a native speaker. With regular effort and the right support, you can overcome common English mistakes and speak with more clarity and confidence.
Take the next step today—assess your level or join an English course designed for real progress.