A complete American English grammar course. Each lesson has a description, examples, and a scored quiz. Use the Previous / Next buttons to move through lessons.
Nouns
Nouns Common vs Proper Nouns Countable vs Uncountable Nouns Collective Nouns Abstract Nouns Plural Nouns (Regular & Irregular) Possessive Nouns Compound NounsPronouns
Pronouns Personal Pronouns Subject vs Object Pronouns Possessive Pronouns Reflexive Pronouns Demonstrative Pronouns Interrogative Pronouns Relative Pronouns Indefinite PronounsVerbs
Verbs Action vs Stative Verbs Main vs Auxiliary Verbs Modal Verbs Transitive vs Intransitive Verbs Linking Verbs Regular vs Irregular Verbs Phrasal Verbs Gerunds Infinitives ParticiplesAdjectives
Adjectives Comparative Adjectives Superlative Adjectives Order of AdjectivesAdverbs
Adverbs Adverbs of Frequency Adverbs of Manner Adverbs of Degree Adverbs of Time & PlacePrepositions
Prepositions Prepositions of Time Prepositions of Place Prepositions of MovementConjunctions
Conjunctions Coordinating Conjunctions Subordinating Conjunctions Correlative ConjunctionsParts of Speech
InterjectionsArticles
Articles: a and an The Definite Article (the) Zero ArticleTenses
Present Simple Present Continuous Present Perfect Present Perfect Continuous Past Simple Past Continuous Past Perfect Past Perfect Continuous Future with Will Future: Be Going To Future Continuous Future PerfectSentences
Sentence Types Simple Sentences Compound Sentences Complex Sentences Subjects & Predicates Subject-Verb Agreement Active Voice Passive Voice Direct vs Reported Speech Reported Questions Question Tags Negation Imperatives Exclamations There Is / There Are Basic Word Order Direct & Indirect Objects Linking Words & TransitionsConditionals
Zero Conditional First Conditional Second Conditional Third ConditionalClauses
Independent & Dependent Clauses Relative (Adjective) Clauses Noun ClausesModals
Can and Could May and Might Must and Have to Should and Ought toQuestions
Yes/No Questions Wh- QuestionsPunctuation
Capitalization Period & Question Mark The Comma Semicolons & Colons The Apostrophe Quotation Marks Contractions Hyphens & DashesDeterminers
Some, Any, and No Much, Many, and a Lot ofSpelling
Spelling: Adding -ing and -edLesson 47 of 103
1) Overview & Definition
The present perfect continuous emphasizes the duration of an action that began in the past and is still happening: has/have been + verb-ing.
4) Clear Examples
📝 Examples