C2 Grammar Diagnostic

The Academic Editor — Identify and correct errors in formal academic writing

How This Works

You are the editor of an academic journal. Your job is to identify and correct grammatical errors in submitted manuscripts.

For each sentence, you will:

  1. Read the sentence carefully
  2. Choose what you think needs editing (or select "No edit needed")
  3. Receive instant feedback showing whether you were correct
  4. See the full explanation of the rule

There are no tricks. Your job is to recognise the error and understand why it matters in formal academic English.

Practice 1: Get the idea

"The data suggests that there is a strong correlation between the two variables."
What needs editing?

Practice 2: Another example

"One cannot help but wonder whether the entire premise is flawed."
What needs editing?

Ready? Move to "The Editor's Desk" to diagnose your academic grammar.

The Editor's Desk

You have 10 manuscript sentences to review. For each one, choose what needs editing, then check your answer.

Style Guide: Rules & Corrections

Below are all 10 sentences with their corrections and the rules explained.

Your Results

Complete the diagnostic to see your results by grammar category.