Sure! Here’s a brief overview of some key English grammar rules:

1. Parts of speech: English words can be categorized into different parts of speech, including nouns, verbs, adjectives, adverbs, prepositions, pronouns, and conjunctions.

2. Subject-verb agreement: In a sentence, the subject and verb must agree in number. For example, if the subject is singular, the verb should be singular, and if the subject is plural, the verb should be plural.

3. Articles: English has two types of articles, “a/an” (indefinite articles) and “the” (definite article), which are used to indicate whether a noun is specific or general.

4. Tenses: English verbs have different tenses, including past, present, and future. Tenses are used to indicate when an action takes place.

5. Adjectives and adverbs: Adjectives modify nouns or pronouns, while adverbs modify verbs, adjectives, or other adverbs.

6. Prepositions: Prepositions are words that show the relationship between a noun or pronoun and other words in a sentence.

7. Pronouns: Pronouns are words that take the place of nouns in a sentence, such as “he,” “she,” “it,” “they,” etc.

8. Conjunctions: Conjunctions are words that join together clauses or phrases in a sentence.

These are just a few of the key grammar rules in English. There are many more rules and nuances to the language, so it’s important to study and practice regularly to improve your grammar skills.