English Grammar Rules

reviewed byKateryna Protsenko / more about Editorial Process
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If you're someone who struggles with English grammar or wants to improve their writing skills, you're in the right place. In this reference, we'll cover everything from the basics to advanced grammar rules, common mistakes, and some fun facts about the rules of grammar.

We'll also provide you with tips for improving your grammar skills. Let's get started!

Why Grammar Rules Matter

Grammar rules are essential for effective communication. They help us to convey our ideas and thoughts clearly and accurately. Good grammar can make the difference between being understood or misunderstood, and it can also impact how professional we appear. With good grammar, we can create a positive impression on our audience, whether it be in our personal or professional lives.

Basic Grammar Rules Everyone Should Know

Before diving into more advanced grammar rules, it's essential to understand the basics. Here are some of the basic English grammar rules that everyone should know:

The Parts of Speech

Knowing the parts of speech is essential to understanding how sentences are constructed. The eight parts of speech are: nouns, adjectives, pronouns, verbs, adverbs, conjunctions, prepositions, and interjections.

Subject-Verb Agreement

Subject-verb agreement is when the subject and verb in a sentence must agree in number. For example, "She runs" is correct, while "She run" is incorrect.

Proper Punctuation

Punctuation is crucial to clear communication. Examples of proper punctuation include commas, periods, question marks, and exclamation points.


Capitalization is used to indicate the beginning of a sentence or proper nouns, such as names of people, places, or things.

Sentence Structure

Complete sentences include a subject, verb, and object. It must also convey a complete thought.

The Most Important Grammar Rules for Good English

Now that you know the basics, let's dive into some of the most important grammar rules for good English:

Use Active Voice

Active voice makes writing more direct and engaging. It also helps to avoid wordiness and confusion. For example, "The dog chased the cat" is active, while "The cat was chased by the dog" is passive.

Avoid Run-On Sentences

Run-on sentences occur when two or more clauses are joined without proper punctuation. They can make writing difficult to understand. For example, "I went to the store I bought some milk" is a run-on sentence. Instead, it should be written as "I went to the store, and I bought some milk."

Use Proper Pronouns

Using proper pronouns is essential for clear communication. For example, "He gave the book to her and me" is incorrect. It should be written as "He gave the book to her and me."

Use Parallel Structure

Parallel structure is when two or more phrases or clauses have the same grammatical structure. It makes writing more organized and easier to read. For example, "She likes to dance, sing, and play the piano" is parallel.

Avoid Double Negatives

Double negatives occur when two negative words are used in the same sentence. They can make sentences confusing and difficult to understand. For example, "I don't have no money" is incorrect. It should be written as "I don't have any money."

Common Grammar Mistakes to Avoid

Even the best writers make mistakes. Here are some common grammar mistakes to avoid:

Confusing Homophones

Homophones are words that may sound the same, but have different meanings. Examples include "there," "their," and "they're."

Incorrect Use of Apostrophes

Apostrophes help us indicate possession or to create contractions. For example, "John's car" indicates possession, while "it's" is a contraction of "it is."

Misusing Commas

Commas are help us separate items in a list or separate clauses in a sentence. Misusing commas can make writing difficult to understand.

Confusing Adjectives and Adverbs

Adjectives describe nouns, while adverbs describe verbs. Confusing the two can make writing confusing.

Using Incorrect Verb Tenses

Using the wrong verb tense can make writing confusing. For example, "I walked to the store yesterday" is in the past tense, while "I am walking to the store" is in the present tense.


Advanced Grammar Rules for More Polished Writing

If you want to take your writing to the next level, here are some advanced grammar rules to consider:

Using the Subjunctive Mood

The subjunctive mood helps us express hypothetical or unlikely situations. For example, you can use "If I were you, I would..." to say something in subjunctive mood.

Using Gerunds and Infinitives

Gerunds and infinitives are verb forms used as nouns. Using them correctly can add variety and depth to your writing.

Using Relative Clauses

Relative clauses are used to add information to a sentence. For example, "The book, which I read last week, was excellent."

Using Modal Verbs

Modal verbs are used to express ability, permission, or possibility. Examples include "can," "may," and "should."

Using the Passive Voice

The passive voice is used when the object of a sentence is more important than the subject. For example, "The cake was baked by John."

Tips for Improving Your Grammar Skills

Now that you're familiar with some grammar rules, here are some tips for improving your grammar skills:

Read More

Reading will quickly help improve your grammar skills. It exposes you to different writing styles and can help you identify common grammar mistakes.

Practice Writing

Practice writing regularly. Set aside some time every day to practice. The more you write, the better you'll become.

Get Feedback

Ask someone to review your writing and provide feedback. This can help you identify mistakes and areas for improvement.

Take a Course

Consider taking a grammar course to improve your skills. Many online courses are available on Promova for your learning success!

Fun Facts About Rules of Grammar

Here are some fun facts about the rules of grammar:

  • Longest word in English has 189,819 letters - it's the chemical name for the protein Titin.
  • The word "set" has the most definitions of any word in the English language.
  • The shortest complete sentence in English is "I am."
  • The word "oxymoron" is itself an oxymoron, as it combines two opposite words.

Basic Grammar Rules Everyone Should Know


English grammar rules are essential for effective communication. By understanding the basic and advanced grammar rules, you can improve your writing skills and avoid common mistakes. Remember to read more, practice writing, and use online resources to improve your grammar skills. With these tips, you'll be on your way to becoming a better writer in no time!

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200 Irregular Verbs ListEllipsisSentences in EnglishCompound-Complex SentencesSimple SentencesComplex SentencesCompound SentencesCommand Sentences in EnglishRun-on SentencesImperative Sentences in EnglishGrammatical Errors in EnglishConfusing words in EnglishSentence Fragment in EnglishComma SplicePlural of Crisis and Other Unusual WordsContractions in EnglishList of ContractionsEnglish SyntaxEnglish Question WordsQuestion tags in EnglishSubject-Verb Agreement in EnglishSubject-Auxiliary Inversion RuleSubjunctive in EnglishDangling ModifierDirect and Indirect ObjectsSimple Subject Compound SubjectDeclarative SentencesDependent ClauseRelative ClauseSubordinate ClauseActive vs Passive VoicePassive VoiceActive VoiceClefts in EnglishEnglish PunctuationParenthetical Expressions


PromovaNov 14th, 2023
Subject-verb agreement is crucial because it ensures that the verb in a sentence corresponds grammatically to the subject in terms of number (singular or plural). For instance, "He eats" (singular subject with singular verb) versus "They eat" (plural subject with plural verb).
Tara McfarlandNov 14th, 2023
Could you explain the significance of subject-verb agreement in english grammar?