Grammar tool

Top 50 common mistakes — fix list

Most candidates make the same errors. Fix these and your Grammar accuracy improves measurably — without learning new structures.

IELTSTOEFLGeneral

Interactive practice lab

Turn Top 50 common mistakes — fix list into active practice.

Short activities built directly from this grammar tool. Drag, decide, match, and recall until the language becomes usable.

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Quick decision

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Round 1/3

Which sentence is the stronger exam-ready version?

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Reference library

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Word choice

I have a 25 years old brother.

I have a 25-year-old brother.

I am agree with you.

I agree with you.

Each of the students have a book.

Each of the students has a book.

Most of people don't know this.

Most people don't know this.

He is a person who is friendly.

He is a friendly person.

More and more people becomes interested.

More and more people are becoming interested.

Nowadays people is too busy.

Nowadays, people are too busy.

Tense & form

I have seen him yesterday.

I saw him yesterday.

If I will study harder, I will pass.

If I study harder, I will pass.

I am living here since 2020.

I have been living here since 2020.

She suggested me to take TOEFL.

She suggested (that) I take TOEFL.

suggest is not followed by an infinitive.

Prepositions

I am good in English.

I am good at English.

She married with a doctor.

She married a doctor.

Discuss about this issue.

Discuss this issue.

I am listening music.

I am listening to music.

Articles

The life is hard.

Life is hard.

I went to home.

I went home.

I play the football.

I play football.

Spelling & confusables

their / there / they're

their = possession, there = location, they're = they are

affect / effect

affect = verb, effect = noun (most cases)

advise / advice

advise = verb, advice = uncountable noun

Editorial details and primary sources

By FluentMock Editorial Team · Published 2026-06-13 · Updated 2026-06-28 · Official sources checked

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