Grammar is important because it helps us communicate clearly and effectively in writing and speaking. Grammar refers to the rules and structure that govern the way words are used in a language. When we follow the grammar rules, our sentences make sense, and our ideas become easier to understand.

Learning English grammar can be a bit challenging, but with practice and useful tips, it can become easier. 

Parts of speech
Parts of speech are different types of words that have specific roles in a sentence. There are eight parts of speech in English:
  1. Noun: a word for a person, place, thing, or idea. Examples: cat, school, happiness.
  2. Pronoun: a word used instead of a noun to avoid repeating it. Examples: he, she, they.
  3. Verb: a word for an action, event, or state of being. Examples: run, eat, is.
  4. Adjective: a word that describes or gives more information about a noun. Examples: big, happy, blue.
  5. Adverb: a word that describes or gives more information about a verb, adjective, or another adverb. Examples: quickly, very, often.
  6. Preposition: a word that shows relationships between other words in a sentence, usually indicating location, direction, or time. Examples: in, on, at.
  7. Conjunction: a word that connects words, phrases, or clauses, Examples: and, but, or.
  8. Interjection: a word or phrase that expresses emotions or surprises. Examples: wow, oh no, oops!
Tenses in English are used to show the time of the action or state expressed by the verb. Each tense has its own set of rules for forming verbs and expressing time.
In total, English has 12 basic tenses.
  1. Present Simple
  2. Present Continuous (Progressive)
  3. Present Perfect
  4. Present Perfect Continuous
  5. Past Simple
  6. Past Continous (Progressive)
  7. Past Perfect
  8. Past Perfect Continuous
  9. Future Simple
  10. Future Continuous (Progressive)
  11. Future Perfect
  12. Future Perfect Continuous