You ever wonder why you often get rejection mails? These grammar errors may be killing you.

Most times, the thing we think we know are what we don’t even have any idea about. And it’s inevitable sometimes doing the right thing the wrong way. This is why most writers get rejection mails often from their favourite magazine. And also, this is the reason ACEworld has sourced for these 15 errors that might be unknown to you.
Here are 15 common grammar mistakes that can kill your credibility as a writer:
1. Subject-Verb Agreement Errors
The subject and verb of a sentence must agree with one another in number whether they are singular or plural. If the subject of the sentence is singular, its verb must also be singular; and if the subject is plural, the verb must also be plural.
2. Sentence Fragments
Sentence fragments are incomplete sentences that don’t have one independent clause. A fragment may lack a subject, a complete verb, or both. Sometimes fragments depend on the proceeding sentence to give it meaning.
3. Missing Comma After Introductory Element
A comma should be used after an introductory word, phrase, or clause. This gives the reader a slight pause after an introductory element and often can help avoid confusion.
4. Misusing The Apostrophe With “Its”
You use an apostrophe with it’s only when the word means it is or it has. Without the apostrophe, its means belonging to it.
5. No Comma In A Compound Sentence
A comma separates two or more independent clauses in a compound sentence separated by a conjunction. The comma goes after the first clause and before the coordinating conjunction that separates the clauses.
6. Misplaced Or Dangling Modifier
A misplaced modifier is a word, phrase, or clause that is improperly separated from the word it modifies or describes. Sentences with this error can sound awkward, ridiculous, or confusing. A dangling modifier is a word or phrase that modifies a word not clearly stated in the sentence.
7. Vague Pronoun Reference
A pronoun can replace a noun, and its antecedent should be the person, place, or thing to which the pronoun refers. A vague pronoun reference (including words such as it, that, this, and which) can leave the reader confused about what or to whom the pronoun refers.
8. Wrong Word Usage
There are a variety of words and phrases that are commonly confused and misused in sentences. Using them incorrectly can change the meaning of the sentence or simply reflect carelessness on the writer’s part. There are hundreds of these commonly confused words, so when in doubt, always check the definition and correct spelling of the word.
9. Run-On Sentence
A run-on sentence occurs when you connect two main clauses with no punctuation.
10. Superfluous Commas
It’s common writing mistake to throw commas around liberally when they aren’t necessary. There are dozens of examples of this error, but here are a few common mistakes.
11. Lack Of Parallel Structure
Faulty parallelism occurs when two or more parts of a sentence are similar in meaning but not parallel (or grammatically similar) in form. It often occurs with paired constructions and items in a series.
12. Sentence Sprawl
A sentence can become a burden to read when there are too many equally weighted phrases.
13. Comma Splice
A comma splice occurs when two separate sentences are joined with a comma rather than a period or semicolon. Writers often create comma splices when using transitional words, such as however, therefore, moreover, nevertheless, or furthermore.
14. Colon Mistakes
A colon is used after a complete sentence to introduce a word, phrase, clause, list, or quotation. The colon signals that what follows proves or explains the sentence preceding the colon.
Example 1:
Incorrect: People move to Florida for: the warmer weather, the beach, and the theme parks.
Correct: People move to Florida for three reasons: the warmer weather, the beach, and the theme parks.
15. Split Infinitives
An infinitive is the word “to” with a verb. A split infinitive separates the word “to” and the verb with another word (often an adverb). There are no grammar rules that prohibit split infinitives, but many experts disapprove of them. If the sentence sounds awkward by correcting the split, our rule of thumb is to go with what makes the most sense in the context of your writing and for the ease of reading. (For example, “To boldly go where no man has gone before” would sound awkward and less powerful as, “To go boldly where no man has gone before.”)
Example 1:
Incorrect: She tried to quickly finish the book before she had to leave.
Correct: She tried to finish the book quickly before she had to leave.
Example 2:
Incorrect: He wanted to gradually improve his strength by increasing the weight.
Correct: He wanted to improve his strength gradually by increasing the weight.
As a serious author, you want to put your best foot forward with your writing. There are times and reasons to break some of the rules of grammar, but it’s wiser to break them knowing what they are and why you should stray.
Whenever you’re in doubt about a rule, take a brief moment to look it up. You’ll save yourself some embarrassment, and you’ll show your readers that you respect language and revere the art of writing well.