Let's explore what verbs are, and what they do! David, KA's Grammar Fellow, explains.

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Grammar on Khan Academy: Grammar is the collection of rules and conventions that make languages go. This section is about Standard American English, but there's something here for everyone.

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1. Introduction to Grammar
2. Introduction to nouns | The parts of speech
3. Introduction to singular and plural nouns
4. Irregular plural nouns |– -f to -ves | The parts of speech
5. Irregular plural nouns |– words that end in -en
6. Irregular plural nouns |– base plurals | The parts of speech
7. Common and proper nouns | The parts of speech
8. Concrete and abstract nouns | The parts of speech
9. Irregular plural nouns | the MUTANT PLURALS
10. Irregular plural nouns |– foreign plurals | The parts of speech
11. BONUS VIDEO |– Origin of the Mutant Plural
12. Introduction to verbs | The parts of speech
13. Introduction to agreement | The parts of speech
14. Introduction to verb tense | The parts of speech
15. The present tense | The parts of speech
16. The past tense | The parts of speech
17. The future tense | The parts of speech
18. Helping verbs | The parts of speech
19. Linking verbs | The parts of speech
20. Introduction to irregular verbs | The parts of speech
21. The funky -ed irregular verb | The parts of speech
22. The vowel-shift irregular verb | The parts of speech
23. The irregular verb gets taken for a ride
24. The truly irregular verbs | The parts of speech
25. Introduction to verb aspect | The parts of speech
26. Simple Aspect | The parts of speech
27. Progressive Aspect | The parts of speech
28. Perfect Aspect | The parts of speech
29. Perfect progressive aspect | The parts of speech
30. Modal verbs | The parts of speech
31. What is a pronoun? | The parts of speech
32. Personal pronouns | The parts of speech
33. Possessive pronouns | The parts of speech
34. Reflexive pronouns | The parts of speech
35. Relative pronouns | The parts of speech
36. That versus which | The parts of speech
37. Who versus whom | The parts of speech
38. Subject and object pronouns | The parts of speech
39. Grammatical person and pronouns | The parts of speech
40. Pronoun number | The parts of speech
41. Indefinite Pronouns | The parts of speech
42. Emphatic pronouns | The parts of speech
43. BONUS VIDEO | Singular They | The parts of speech
44. Intro to adjectives | The parts of speech
45. Intro to articles | The parts of speech
46. Definite and indefinite articles | The parts of speech
47. Intro to adverbs | The parts of speech
48. Adjective order | The parts of speech
49. Adjectives and commas | Adjectives
50. Intro to the comparative and the superlative | The parts of speech
51. Forming comparative and superlative modifiers | The parts of speech
52. Relative adverbs | The parts of speech
53. Intensifiers and adverbs of degree | The parts of speech
54. Meet the preposition | The parts of speech
55. Prepositions of space | The parts of speech
56. Prepositions of time | The parts of speech
57. Prepositions of neither space nor time | The parts of speech
58. Compound prepositions | The parts of speech
59. Prepositional phrases | The parts of speech
60. Terminal prepositions | The parts of speech
61. Coordinating conjunctions | The parts of speech
62. Subordinating conjunctions | The parts of speech
63. Correlative conjunctions | The parts of speech
64. Beginning sentences with conjunctions | The parts of speech
65. Three ways to end a sentence | Punctuation
66. Meet the Comma | Punctuation
67. Salutations and valedictions | Punctuation
68. Commas in space and time | The Comma | Punctuation
69. Commas and introductory elements | Punctuation
70. Punctuating a list | Punctuation
71. More uses for commas | Punctuation
72. Commas in dialogue | Punctuation
73. Appositives | Punctuation
74. BONUS: The Oxford comma | Punctuation
75. Introduction to the apostrophe | The Apostrophe | Punctuation
76. Introduction to contractions | The Apostrophe | Punctuation
77. Introduction to the possessive | The Apostrophe | Punctuation
78. Possession for words ending in “s” | The Apostrophe | Punctuation
79. Advanced (plural) possession | The Apostrophe | Punctuation
80. Apostrophes and plurals | The Apostrophe | Punctuation
81. Choosing between its and it’s | The Apostrophe | Punctuation
82. BONUS: History of the apostrophe | The Apostrophe | Punctuation
83. BONUS: History of the possessive apostrophe | The Apostrophe | Punctuation
84. How to use italics and underlines | Punctuation
85. Using quotation marks in titles | Punctuation
86. Dashes | Punctuation
87. Hyphens vs. dashes | Punctuation
88. Parentheses | Punctuation
89. Ellipses | Punctuation
90. BONUS: "FANBOYS," a mnemonic song | Conjunctions | Parts of speech

Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language, its rules, and its conventions. By understanding English – by speaking it, by writing it, by reading this very sentence – you are a grammarian yourself!