Grammar structures and concepts related to verbs in English

1. Verb Tenses:
   • Present Simple
   • Present Continuous
   • Present Perfect
   • Present Perfect Continuous
   • Past Simple
   • Past Continuous
   • Past Perfect
   • Past Perfect Continuous
   • Future Simple (will)
   • Future Continuous
   • Future Perfect
   • Future Perfect Continuous
2. Subject-Verb Agreement:
   • Verbs must agree with their subjects in number and person (e.g., “He works” vs. “They work”).
3. Regular vs. Irregular Verbs:
   • Regular verbs follow a pattern when forming their past tense (e.g., “walked”), while irregular verbs do not (e.g., “went”).
4. Modal Verbs:
   • Modal verbs (can, could, may, might, must, shall, should, will, would) are used to express possibility, necessity, permission, or ability.
5. Passive Voice:
   • The passive voice is used to change the focus of a sentence from the doer of the action to the receiver (e.g., “The book was written by the author”).
6. Participles:
   • Verbs used as adjectives (e.g., “the broken window”).
7. Conditional Sentences:
   • Expressing conditions and hypothetical situations using if-clauses (e.g., “If it rains, we will stay home”).
8. Phrasal Verbs:
   • Verbs combined with particles (prepositions or adverbs) that change the verb’s meaning (e.g., “give up,” “turn on”).
9. Gerund vs. Infinitive Usage:
   • Some verbs can be followed by either a gerund or an infinitive with a change in meaning (e.g., “I like swimming” vs. “I like to swim”).
10. Causative Verbs:
    • Verbs that indicate someone or something is causing an action to happen (e.g., “She had her car repaired”).
11. Sequence of Tenses:
    • Rules for maintaining consistency in verb tenses within a sentence or paragraph.
12. Reporting Verbs:
    • Verbs used to report speech or thoughts (e.g., “She said,” “He thought”).
13. Verb Agreement with Collective Nouns:
    • Understanding whether to use a singular or plural verb with collective nouns (e.g., “The team is” vs. “The team are”).

These are key grammar structures and concepts related to verbs in English. Understanding these will help you use verbs correctly in a variety of sentences and contexts.