Formal languages

Conjunctive grammar

Conjunctive grammars are a class of formal grammarsstudied in formal language theory.They extend the basic type of grammars,the context-free grammars,with a conjunction operation.Besides explicit conjunction,conjunctive grammars allow implicit disjunctionrepresented by multiple rules for a single nonterminal symbol,which is the only logical connective expressible in context-free grammars.Conjunction can be used, in particular,to specify intersection of languages.A further extension of conjunctive grammarsknown as Boolean grammarsadditionally allows explicit negation. The rules of a conjunctive grammar are of the form where is a nonterminal and, ..., are strings formed of symbols in and (finite sets of terminal and nonterminal symbols respectively).Informally, such a rule asserts that every string over that satisfies each of the syntactical conditions representedby , ..., therefore satisfies the condition defined by . (Wikipedia).

Video thumbnail

ATTRIBUTIVE and PREDICATE ADJECTIVES - ENGLISH GRAMMAR

We talk about adjectives: attributive and predicative. Attributive adjectives appear before the nouns they modify. Predicative adjectives appear after a BE or LINKING verb. If you want to support the channel, hit the "JOIN" button above and pick a channel subscription that suits your need

From playlist English Grammar

Video thumbnail

Subjunctive With Indefinites in Italian: Congiuntivo con Gli Indefiniti

Indefinites include certain pronouns, adjectives, adverbs, and expressions, and the certainty implied by these words will often require the use of the subjunctive tense. Let's go over all of these definites and practice using the subjunctive with them now! Script by Patrizia Farina, Profe

From playlist Italian

Video thumbnail

Grammar: Who's or Whose?

In this video, you’ll learn more about when to use "whose" and "who's" correctly in American English. Visit https://www.gcflearnfree.org/grammar/whos-or-whose/1/ for our text-based lesson. We hope you enjoy!

From playlist Grammar

Video thumbnail

NOUN PHRASES - ENGLISH GRAMMAR

We discuss noun phrases. Noun phrases consist of a head noun, proper name, or pronoun. Noun phrases can be modified by adjective phrases or other noun phrases. Noun phrases take determiners as specifiers. We also draw trees for noun phrase. you want to support the channel, hit the "JOIN"

From playlist English Grammar

Video thumbnail

THE BASICS of VERBS - ENGLISH GRAMMAR

Verbs are actions, states, or sensations. There are intransitive verbs, transitive verbs, and ditransitive verbs which we will discuss in future videos. If you want to support the channel, hit the "JOIN" button above and pick a channel subscription that suits your needs. Every cent is app

From playlist English Grammar

Video thumbnail

What's the difference between "I used to" "I am used to" & "i get used to"?

In this English grammar video you'll learn the difference between "to be used to" something, "to get used to" something and "used to" + infinitive. There is a lot of confusion about this grammar from all levels of speakers but it's not really so complicated and within 3 minutes you'll un

From playlist English grammar tenses (with subtitles)

Video thumbnail

Coordinating conjunctions | The parts of speech | Grammar | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-preposition-and-the-conjunction/introduction-to-conjunctions/v/coordinating-conjunctions-final Coordinating conjunctions connect

From playlist The parts of speech | Grammar | Khan Academy

Video thumbnail

Subordinating conjunctions | The parts of speech | Grammar | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-preposition-and-the-conjunction/introduction-to-conjunctions/v/subordinating-conjunctions Subordinating conjunctions join two pa

From playlist The parts of speech | Grammar | Khan Academy

Video thumbnail

Correlative conjunctions | The parts of speech | Grammar | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-preposition-and-the-conjunction/correlative-conjunctions-and-starting-sentences/v/correlative-conjunctions Correlative conjuncti

From playlist The parts of speech | Grammar | Khan Academy

Video thumbnail

Conjugation and Usage of the Verb: Avere (To Have)

Conjugating verbs can be difficult for English-speakers because English doesn't really do it. But in most other languages, this is part of the grammatical structure, so we have to learn! Let's start with an irregular one, "avere". It means "to have", which is a very common thing that one w

From playlist Italian

Video thumbnail

[Syntax] Verbs and Their Grammatical Properties

We introduce verbs as well as some of their syntactic properties, such as aspect, mood, tense, agreement, and subclasses, such as intransitive verbs, transitive verbs, and ditransitive verbs. LIKE AND SHARE THE VIDEO IF IT HELPED! Visit our website: http://bit.ly/1zBPlvm Subscribe on You

From playlist Syntax

Video thumbnail

Beginning sentences with conjunctions | The parts of speech | Grammar | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-preposition-and-the-conjunction/correlative-conjunctions-and-starting-sentences/v/beginning-sentences-with-conjunctions-the-conju

From playlist The parts of speech | Grammar | Khan Academy

Video thumbnail

Subjunctive With Conjunctions in Italian: Congiuntivo con Congiunzioni

Alright, we've got two subjunctive tenses down, those being the present and past subjunctive. Before we learn the other two, let's take a look at how the subjunctive will work with conjunctions. Script by Patrizia Farina, Professor of Italian at Western Connecticut State University and Pu

From playlist Italian

Video thumbnail

What is a Conjunction? | Basic English Grammar Rules | ESL | SAT | TOEFL

What is a conjunction? Conjunctions are like the glue in your sentences, holding words and phrases together. We discuss the 3 types of Conjunctions: Coordinating (for, and, nor, but, or, yet, so) Subordinating (because, before, after, although, since, unless, until…) Correlative (either/o

From playlist It Starts With Literacy

Video thumbnail

23C3: A Natural Language Database Interface using Fuzzy Semantics

Speaker: Richard Bergmair We give a thorough exposition of our natural language database interface that produces result sets ranked according to the degree to which database records fulfill our intuitions about vague expressions in natural language such as `a small rainy city near San Fr

From playlist 23C3: Who can you trust

Video thumbnail

Grammar Tuesday: Simple & Compound Sentences

Buy my revision guides in paperback on Amazon*: Mr Bruff’s Guide to GCSE English Language https://amzn.to/2GvPrTV Mr Bruff’s Guide to GCSE English Literature https://amzn.to/2POt3V7 AQA English Language Paper 1 Practice Papers https://amzn.to/2XJR4lD Mr Bruff’s Guide to ‘Macbeth’ htt

From playlist Grammar

Video thumbnail

Dependent and independent clauses | Syntax | Khan Academy

Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/humanities/grammar/syntax-sentences-and-clauses/phrases-and-clauses/e/dependent-and-independent-clauses Independent clauses can stand on their own as sentences, but dependent clauses can’t

From playlist Grammar

Video thumbnail

ADVERBS of TIME, FREQUENCY, LOCATION, and MANNER - ENGLISH GRAMMAR

We talk about adverbs of location, adverbs of time, adverbs of manner, and adverbs of frequency. Adverbs modify verbs or add background information for an entire sentence. #EnglishGrammar #Grammar #English If you want to support the channel, hit the "JOIN" button above and pick a channel

From playlist English Grammar

Video thumbnail

Complex Sentences with Subordinating Conjunctions

From the author of 'Mr Bruff's Guide to Grammar': https://www.amazon.co.uk/Bruffs-Guide-Grammar-Kerry-Lewis/dp/1520926693/ref=sr_1_1?dchild=1&keywords=mr+bruff+grammar&qid=1601225092&sr=8-1 or https://mrbruff.com/

From playlist Sentences

Related pages

International Conference on Developments in Language Theory | Pushdown automaton | Kleene star | Recursive descent parser | Regular language | Tuple | Boolean grammar | Negation | Pumping lemma for context-free languages | Terminal and nonterminal symbols | Context-free language | Logical conjunction | GLR parser | Formal language | Concatenation | Language equation | Logical disjunction | CYK algorithm