As a student, writing is an essential skill that you will use throughout your academic career. However, many students struggle with writing, and common mistakes can hinder your success.

In this article, we will explore some of the most common writing mistakes that students make and provide tips on how you can avoid them.

Composition: Organizing thoughts

One of the most common mistakes that students make in their writing is failing to stay on topic. When writing, it’s easy to get sidetracked especially if you are not familiar with the subject matter. However, to appear knowledgeable in the topic you’re writing about, avoid going off on tangents. This will help ensure that your writing is clear and concise and that you are effectively communicating your ideas.

Another common mistake that students make is failing to proofread their work. Before submitting your work, carefully review it. (After all, even the best writers make mistakes.) Proofreading includes checking for spelling and grammar errors, as well as ensuring that your writing is well-organized and flows smoothly.

By taking the time to proofread your work, you can catch errors that may have otherwise gone unnoticed and improve the overall quality of your writing.


Punctuation plays an important role in clarifying and enhancing the meaning of text. Let’s explore how to use it effectively.


Commas are used to separate items in a list, to separate clauses in a sentence, and to set off introductory words and phrases. One common mistake students make is using too many commas or not using them at all.

For example, “I went to the store, and bought some apples, and oranges, and bananas.” This sentence has too many commas. It should be rewritten as “I went to the store and bought some apples, oranges, and bananas.”

On the other hand, students often forget to use commas to separate clauses. For example, “I went to the store and bought some apples oranges and bananas.” This sentence needs a comma after “apples” to separate the two clauses.


Apostrophes are used to show possession and to indicate contractions. One common mistake students make is using apostrophes for plural nouns. For example, “I have two apple’s.” This sentence should be rewritten as “I have two apples.”

Another mistake is forgetting to use an apostrophe in contractions. For example, “It’s a beautiful day.” This sentence should be rewritten as “It is a beautiful day.”

Quotation Marks

Quotation marks are used to indicate direct speech and to show titles of short works. One common mistake students make is using double quotation marks for emphasis. For example, “The ‘best’ pizza in town.” This sentence should be rewritten as “The best pizza in town.”

Another mistake is forgetting to use quotation marks for direct speech. For example, “She said she was hungry.” This sentence should be rewritten as “She said, ‘I am hungry.'”

In conclusion, punctuation is an important aspect of writing that can greatly affect the clarity and meaning of a sentence. By avoiding common mistakes such as using too many commas, using apostrophes incorrectly, and misusing quotation marks, students can improve their writing skills and effectively communicate their ideas.


When it comes to writing, grammar is one of the most important things to get right. Here are some common grammar mistakes that students should avoid:

Subject-verb agreement

One of the most common grammar mistakes is subject-verb agreement. This means that the subject and verb in a sentence should agree in number. For example, if the subject is singular, the verb should be singular as well. If the subject is plural, the verb should be plural. Here are some examples:

  • Incorrect: The cats plays in the garden.
    Correct: The cats play in the garden.
  • Incorrect: The books on the table is my favorite.
    Correct: The books on the table are my favorite.


Another common grammar mistake is tense. Tense refers to the time frame in which a sentence is written. It is important to maintain consistency in tense throughout a piece of writing. Here are some examples:

  • Incorrect: Yesterday, I eat pizza for lunch.
    Correct: Yesterday, I ate pizza for lunch.
  • Incorrect: I’m going to the store and I buy some milk.
    Correct: I’m going to the store, and I’m going to buy some milk.
    Better: I’m going to the store to buy some milk.

Run-on sentences

A run-on sentence is a sentence that is too long and includes too many ideas. It can be confusing for the reader and make the writing difficult to follow. Here are some examples:

  • Incorrect: I woke up early this morning, I went for a run, I had breakfast, I took a shower, and I got dressed for work.
    Correct: I woke up early this morning. I went for a run, had breakfast, took a shower, and got dressed for work.
  • Incorrect: She loves to read books she also enjoys watching movies.
    Correct: She loves to read books, but she also enjoys watching movies.
  • Incorrect: She studied for hours, she felt unprepared for the exam.
    Correct: She studied for hours, yet she felt unprepared for the exam.

By avoiding these common grammar mistakes, students can improve the clarity and effectiveness of their writing.



One of the most common spelling mistakes students make is confusing words that sound alike but have different meanings. These words are called homophones. Here are some examples:

TheirBelonging to them
ThereIn that place
They’reThey are
ToExpressing direction or motion
TooAlso or excessively
TwoThe number 2

To avoid making these mistakes, we have to pay close attention to the context in which the word is being used.

Confusing Words

Another common spelling mistake is confusing words that have similar spellings but different meanings. Here are some examples:

Confusing WordMeaning
AffectTo influence
EffectA result
ThanUsed for comparison
ThenRefers to a specific time
YourBelonging to you
You’reYou are
Principle (fundamental truth)Principal (head of a school)
Stationary (not moving)Stationery (writing materials)

To avoid making these mistakes, it’s important to carefully proofread your work and use a dictionary to check the correct spelling and meaning of the word.


Passive Voice

One of the most common writing mistakes is the use of passive voice.

Passive voice can obscure the subject performing the action, leading to less engaging writing. For instance, ‘The project was completed by the team’ (passive) becomes more direct and engaging as ‘The team completed the project’ (active).”

Repetitive Words and Phrases

Another common writing mistake is the overuse of repetitive words and phrases. This can make your writing sound monotonous and boring. To avoid this, try to vary your vocabulary and sentence structure. Use synonyms and different sentence patterns to keep your writing fresh and interesting.

  • Repetitive: The book was really interesting. I found it really interesting.
    Varied: The book was fascinating. I was captivated by it.
  • Repetitive: He was very tired. In fact, he was so tired that he could barely stand.
    Varied: Exhausted to the core, he could barely muster the strength to stand.

Be mindful as well of using filler words and phrases such as “in order to” or “due to the fact that.” These can make your writing wordy and less concise.

Other Common Mistakes

Misplaced modifiers and complex sentence structures are two areas where even seasoned writers sometimes stumble.

Misplaced modifiers

  • Incorrect: Excited about the concert, the tickets were quickly bought by Jenna.
    Correct: Excited about the concert, Jenna quickly bought the tickets.
  • Incorrect: Hungry, the leftovers in the fridge were devoured by Kevin.
    Corrected: Hungry, Kevin devoured the leftovers in the fridge.
  • Incorrect: Walking through the park, the birds chirped loudly in Sarah’s ears.
    Correct: As Sarah walked through the park, the birds chirped loudly in her ears.

Complex sentence structures

  • Incorrect: The weather was bad. The team decided to play the match.
    Correct: Despite the bad weather, the team decided to play the match.
  • Incorrect: Maria loves to read. She does not like loud environments.
    Correct: Although Maria loves to read, she cannot concentrate in loud environments.
  • Incorrect: He finished his homework. He then watched a movie. He was feeling tired.
    Correct: After finishing his homework, he watched a movie, even though he was feeling tired.

By understanding and applying these key aspects of writing – punctuation, grammar, spelling, and style – you can significantly enhance the clarity and impact of your academic work.

Remember, writing is a skill honed over time with practice and attention to detail. Apply these tips in your next writing assignment and continue exploring resources for ongoing improvement.

Keep writing, keep learning!