In the world of business, first impressions matter. Whether you’re sending an email to a potential client, creating marketing materials, or publishing content on your website, the way you communicate can significantly impact how your business is perceived.
One common way businesses unwittingly damage their credibility is through grammar mistakes. Poor grammar can make your business look unprofessional and careless.
To help you avoid these pitfalls, we’ve compiled a list of 15 grammar mistakes that you should be aware of and avoid at all costs.
The infographic below from CopyBlogger gives you 15 of the most common grammar mistakes you are making that will reduce the effectiveness of your marketing messages.
1. Incorrect Apostrophe Usage
One of the most common and glaring grammar mistakes is the incorrect use of apostrophes. Misplacing an apostrophe can completely change the meaning of a sentence. The two main apostrophe errors to watch out for are:
- It’s vs. Its: “It’s” is a contraction of “it is” or “it has,” while “its” is a possessive pronoun. Incorrect usage: “The dog wagged it’s tail.” Correct usage: “The dog wagged its tail.”
- They’re vs. Their vs. There: “They’re” is a contraction of “they are,” “their” is a possessive pronoun, and “there” refers to a location. Incorrect usage: “Their going to the conference next week.” Correct usage: “They’re going to the conference next week.”
2. Misplaced Commas
Commas are powerful punctuation marks, but they must be used correctly. Misplacing a comma can change the meaning of a sentence. Two common comma errors to watch out for include:
- Comma Splice: This occurs when two independent clauses are joined by a comma without a coordinating conjunction. Incorrect usage: “She is busy, she can’t attend the meeting.” Correct usage: “She is busy, so she can’t attend the meeting.”
- Comma After Conjunctions: Do not use a comma after conjunctions like “and,” “but,” and “or” when they connect two independent clauses. Incorrect usage: “He wanted to go, but, she preferred to stay.” Correct usage: “He wanted to go, but she preferred to stay.”
3. Subject-Verb Agreement
Subject-verb agreement is crucial for maintaining sentence clarity. The subject and verb must agree in number (singular or plural). Mistakes in this area can make your writing confusing. Pay attention to these examples:
- Singular vs. Plural: Make sure that a singular subject matches with a singular verb, and a plural subject with a plural verb. Incorrect usage: “The team are working on the project.” Correct usage: “The team is working on the project.”
- Indefinite Pronouns: Be careful with indefinite pronouns like “everyone” and “nobody.” Incorrect usage: “Nobody want to attend the seminar.” Correct usage: “Nobody wants to attend the seminar.”
4. Dangling Modifiers
Dangling modifiers occur when the word a modifier is intended to describe is not present in the sentence. This can lead to confusing and awkward sentences. Here’s an example:
- Dangling Modifier: “Running late for the meeting, the report was left behind.” (Who was running late, the report?) Corrected: “Running late for the meeting, he left the report behind.”
5. Double Negatives
Using double negatives can confuse the meaning of a sentence. In English, two negatives cancel each other out, resulting in a positive meaning. Avoid sentences like:
- Double Negative: “I don’t want none of that.” (This implies you do want some of that.) Corrected: “I don’t want any of that.”
6. Confusing Homophones
Homophones are words that sound the same but have different meanings and spellings. Confusing these can lead to embarrassing mistakes. Here are some common homophones to watch out for:
- Your vs. You’re: “Your” is a possessive pronoun, while “you’re” is a contraction of “you are.” Incorrect usage: “Your going to love this product.” Correct usage: “You’re going to love this product.”
- To vs. Too vs. Two: “To” is a preposition, “too” means also or very, and “two” is the number. Incorrect usage: “I want two go too.” Correct usage: “I want to go too.”
7. Run-On Sentences
Run-on sentences occur when two or more independent clauses are joined without proper punctuation or conjunctions. These can be difficult to follow and should be avoided. Here’s an example:
- Run-On Sentence: “I have a meeting in the morning I need to prepare for it’s important.” Corrected: “I have a meeting in the morning. I need to prepare for it; it’s important.”
8. Inconsistent Verb Tense
Verb tense should remain consistent within a sentence or paragraph unless there is a clear reason to shift tenses. Inconsistent verb tense can confuse your readers. Here’s an example:
- Inconsistent Verb Tense: “She reads the book yesterday.” Corrected: “She read the book yesterday.”
9. Using Incorrect Words
Using the wrong word can completely change the meaning of a sentence. Common examples include:
- Effect vs. Affect: “Effect” is a noun, and “affect” is a verb. Incorrect usage: “The new policy will not effect our sales.” Correct usage: “The new policy will not affect our sales.”
- Accept vs. Except: “Accept” means to receive willingly, while “except” means excluding. Incorrect usage: “I will except your invitation.” Correct usage: “I will accept your invitation.”
10. Lack of Parallel Structure
Parallel structure involves using the same grammatical structure for similar elements within a sentence or paragraph. Inconsistent structure can make your writing awkward. Here’s an example:
- Lack of Parallel Structure: “She enjoys hiking, swimming, and to cycle.” Corrected: “She enjoys hiking, swimming, and cycling.”
11. Sentence Fragments
Sentence fragments are incomplete sentences that lack a subject, verb, or both. They can make your writing unclear and disjointed. Here’s an example:
- Sentence Fragment: “After the meeting. We went for lunch.” Corrected: “After the meeting, we went for lunch.”
12. Overusing Passive Voice
While passive voice has its place in writing, overusing it can make your writing less clear and engaging. Active voice is often more direct and easier to understand. Here’s a comparison:
- Passive Voice: “The report was read by the manager.” (The focus is on the report.)
- Active Voice: “The manager read the report.” (The focus is on the manager.)
13. Redundancy
Redundancy occurs when you use unnecessary words or phrases that repeat information. It can make your writing wordy and less impactful. Here’s an example:
- Redundant: “She personally met with the CEO herself.” Corrected: “She personally met with the CEO.”
14. Incorrect Capitalization
Capitalization rules are important for maintaining a professional appearance. Here are some common capitalization mistakes to avoid:
- Improper Nouns: Capitalize proper nouns like names, titles, and specific places. Incorrect usage: “The meeting with the president was rescheduled.” Correct usage: “The meeting with President Smith was rescheduled.”
- Titles: Capitalize the first word of titles and headings. Incorrect usage: “The Benefits of Our New Product.” Correct usage: “The Benefits of Our New Product.”
15. Missing or Misused Punctuation
Punctuation errors can significantly impact the clarity and flow of your writing. Here are some common punctuation mistakes:
- Missing Periods: Failing to use periods at the end of sentences can make your writing confusing. Incorrect usage: “I’ll be there in five minutes” Correct usage: “I’ll be there in five minutes.”
- Excessive Exclamation Marks: Using too many exclamation marks can make your writing appear unprofessional and overly enthusiastic. Incorrect usage: “Get our amazing product now!!!!” Correct usage: “Get our amazing product now!”
In conclusion, grammar mistakes can tarnish your business’s image and credibility. To avoid these common errors, consider proofreading your content carefully or using grammar-checking tools. Investing time in improving your writing skills can pay off in creating a more professional and trustworthy image for your business. Remember, clear and correct communication is key to success in the business world, so strive for excellence in your written communication.

Author:
Mark Ford
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