How do I choose between a, an, and the in English?

Use a or an for non-specific singular nouns, and the for a specific noun known to the speaker and listener.

What is the difference between -ed and -ing adjectives?

-Ed adjectives describe how someone feels, while -ing adjectives describe what causes the feeling, such as bored versus boring.

When can a sentence be changed into the passive voice?

A sentence can usually become passive when its verb has a direct object, such as “The team completed the project” becoming “The project was completed.”

Free online course English Grammar Rules

Duration of the online course: 5 hours and 41 minutes

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Master English grammar fast with a free online course—fix common mistakes, write clearly, and earn a certificate-ready skill for work and study.

In this free course, learn about

Core English grammar rules and how to apply them in sentences
Choosing correct articles (a, an, the, or no article) in context
Using time expressions for events near vs far in time
Correct usage of quantifiers: some, any, many (and related forms)
Proper adverb placement in clauses (frequency, manner, time, degree)
When to use -ed vs -ing adjectives based on feelings vs causes
Identifying when passive voice is possible/appropriate (passive eligibility)

About the free online course

Clear, confident English starts with grammar you can actually use. This free online course helps you move beyond memorized rules and into real-life accuracy, so your writing sounds natural and your speaking feels more assured. Whether you are preparing for exams, improving workplace communication, or simply aiming to express yourself with fewer errors, you will learn how to make the kinds of choices that native speakers make automatically.

Throughout the lessons, you will strengthen your command of the building blocks that shape meaning: choosing the right article, referring to time with precision, and selecting quantifiers that fit the situation. You will also train your ear for what sounds correct, learning how word order affects clarity and emphasis. With focused practice, you will spot typical mistakes before they happen and build a reliable habit of self-correction.

The course is designed to be practical and confidence-building. Instead of overwhelming you with theory, it uses short explanations and targeted exercises to help rules stick. You will learn to use -ed and -ing adjectives accurately to describe feelings and causes, place adverbs naturally, and recognize when passive forms make sense. By the end, you will have a stronger grammar foundation you can apply to emails, essays, presentations, interviews, and everyday conversations—plus the momentum to keep improving.

Course content

Video class: 500 English Grammar Rules Explained 5h41m
Exercise: Choose the correct article
Exercise: Near or far in time
Exercise: Some, any, or many
Exercise: Adverb placement
Exercise: Ed or ing adjective
Exercise: Passive eligibility

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Explore free online English grammar courses designed to improve your writing, speaking, punctuation, sentence structure, and everyday communication. Learn at your own pace with beginner to advanced lessons, practical exercises, and expert guidance. Enroll today, build stronger language skills, and earn a certificate upon completion.