Grammar mistakes that lower IELTS scores
Most students do not lose grammar marks because of rare advanced structures. They lose marks because a few common mistakes keep repeating. If you fix those patterns, your writing and speaking start to feel much more controlled.
The fastest improvement usually comes from noticing what you do again and again.
Three mistakes that appear again and again
Subject-verb agreement with long subjects
Students follow the nearest noun instead of the real subject.
Double subjects
The noun is repeated with a pronoun, which makes the sentence ungrammatical.
Risky word order
Writers try to sound formal, but the sentence order becomes unnatural.
Examples of safer corrections
| Weak sentence | Better sentence |
|---|---|
| The number of students who study abroad are increasing. | The number of students who study abroad is increasing. |
| My sister, she lives in Calgary. | My sister lives in Calgary. |
| Under no circumstances I will accept this. | I will not accept this under any circumstances. |
Why these mistakes happen
Some errors come from translation. The sentence pattern feels normal in another language, so it slips into English.
Other errors happen because students try to sound more advanced before the basic sentence is stable.
A better checking habit
- Find the real subject before you check the verb.
- Make sure one clause has one clear subject.
- Keep word order simple unless you are fully sure the advanced pattern is correct.
- Check your last three sentences before you submit, not only the first paragraph.
Next step
FAQ
What grammar mistakes lower IELTS writing scores most often?
Common score-lowering mistakes include subject-verb agreement problems, double subjects, and unnatural word order in sentences that try to sound too formal.
Can a few grammar mistakes really affect my score?
Yes. A few repeated grammar mistakes can make the whole response feel less controlled, especially when the same error appears again and again.
How can I reduce grammar mistakes faster?
Focus on a few repeated error patterns, write slowly enough to stay in control, and check the same problem areas every time you review your work.