A Practical Guide to Common English Mistakes
✅ Reviewed by Emma Caldwell, ELT Editor — CELTA & DELTA, for accuracy against current ELT practice and exam specifications.

Wrong prepositions
Prepositions rarely translate directly between languages, which is why they cause so many errors. English says dependent on (not of), interested in (not for), good at (not in), arrive at/in (not to).
Incorrect: I am interested for history. Correct: I am interested in history.
Incorrect: She arrived to the station. Correct: She arrived at the station.
Word order errors
English is strict about word order, especially the subject–verb–object pattern and the placement of adverbs. Time adverbs usually go at the end or the start, not in the middle of the verb.
Incorrect: I go always to the gym. Correct: I always go to the gym.
Incorrect: I like very much this book. Correct: I like this book very much.
Countable and uncountable nouns
Some nouns are uncountable in English but countable in other languages: information, advice, furniture, news, equipment. They take no a/an and no plural, and use much not many.
Incorrect: She gave me an advice. Correct: She gave me some advice.
Incorrect: We bought new furnitures. Correct: We bought new furniture.
False friends
False friends are words that look similar across languages but mean different things. English actually means ‘in fact’, not ‘currently’ (that is currently or at the moment). English sensible means ‘practical’, not ‘sensitive’. Always check a word’s English meaning in the Cambridge Dictionary rather than trusting the resemblance.
Double negatives
Standard English uses one negative, not two. I don’t know nothing is non-standard; the standard form is I don’t know anything or I know nothing. In formal and exam writing, avoid double negatives entirely.
How to catch your own errors before they stick
The most effective learners do not wait for a teacher to flag every mistake — they build habits of self-correction. One practical method is the “read aloud” check: speaking your sentence out loud forces you to process it at a slower pace, and many errors become obvious when you hear them. Awkward phrasing, missing articles, and tense shifts that slip past the eye often jump out to the ear.
Another technique is to keep a personal error log. Each time someone corrects you or you notice a recurring mistake, write it down with the correct version. Review the log weekly. Patterns emerge quickly: if you keep mixing up since and for, or forgetting the third-person -s, a single targeted drill can fix the habit far faster than passive reading ever will.
When errors actually help: the fluency-accuracy trade-off
Beginners often freeze mid-sentence, terrified of producing an imperfect utterance. This fear is itself a barrier to progress. Research in second-language acquisition shows that learners who are willing to communicate despite making errors develop fluency faster than those who obsess over correctness at every turn. The reason is simple: practice volume drives improvement, and perfectionism slashes that volume.
The smart approach is to distinguish between errors that impede understanding and those that do not. If you say “I go to office yesterday”, the meaning is clear even though the tense and article are wrong — keep talking and fix the pattern later. If you say something so garbled that your listener looks confused, pause and rephrase. Accuracy matters most in writing and formal contexts; fluency matters most in spontaneous conversation. Know which mode you are in.
Key takeaways
- Most common English errors fall into a small number of predictable categories that can be drilled.
- Self-correction habits — reading aloud and keeping an error log — accelerate improvement.
- Fluency and accuracy trade off; be willing to communicate imperfectly in conversation to build speed.
- Focus on fixing one or two recurring error types at a time rather than everything at once.
- False friends and preposition patterns deserve special attention because they resist intuition.
Frequently asked questions
What is the fastest way to stop making common mistakes?
Are all ‘mistakes’ actually wrong?
Is it bad to think in my native language before speaking English?
How many mistakes should I try to fix at once?
Sources & further reading
Guidance is drawn from the authoritative ELT sources above. Examples and explanations are provided for educational purposes; always check current exam specifications on the official test websites.