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Human Language Sentences – Basic Parse Trees, X-Bar Theory & Ambiguity — Linguistics 101



NativLang

A short introduction to modern grammars of natural language. Use the fundamentals of generative grammar to learn about syntax (the grammar & rules of sentences). Follow along as I work through the structure of a simple sentence, building a parse tree for that sentence with X-Bar Theory. Learn to walk through the tree, compare types of structures and identify ambiguities. Basic but helpful for nonspecialists interested in computational grammars, the syntax of native & foreign languages, and natural language processing.

Online text version of this lesson:
http://www.nativlang.com/linguistics/grammar-xbar-lessons.php

To learn more about word classes and word formation (nouns, verbs, morphemes, affixes), please visit:
http://www.nativlang.com/linguistics/grammar-morphology-lessons.php

If you’re rusty on the grammar of sentences (clauses, phrases, rules), please visit:
http://www.nativlang.com/linguistics/grammar-syntax-lessons.php

I mention two previous lessons during the video (“Introduction to the Grammar of Sentences” and “The Verb & Its Arguments”):
http://www.nativlang.com/linguistics/grammar-syntax-lessons.php
http://www.nativlang.com/linguistics/grammar-morphosyntax-lessons.php .

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32 thoughts on “Human Language Sentences – Basic Parse Trees, X-Bar Theory & Ambiguity — Linguistics 101
  1. "The boss ate at home soup" seems not to be a mangle of the grammar, at least when I hear it the sentance while sounding a bit odd, would not cause me to stop and think if I heard it in public surrounded with other sentences.

  2. The X-Bar Theory suggests that each part of speech has a binary relationship with the other when drawn as tree diagrams. However, in your "….ate soup" sentence, we could obviously see you have branched an NP using three branches!

    Waiting your reply. 🙂

  3. 1. Why did grammar evolve?
    God is a mechanism that automatically interlinks and solves all problems of life simultaneously.
    2. Grammar evolved to de-link activities from each other. This enables us to solve problems manually and one at a time.
    3. In scriptures individual sentences don't make complete sense as do modern sentences.
    4. Grammar makes us reasonable but illogical. Grammar and reasoning makes our life paradoxical. It gives us an illusion of control over everything. However, actually we are losing control over everything.
    5. A verse of a scripture is a means to understand god. It is not an end in itself. Verses of a scripture are like pieces of a jigsaw puzzle. If we solve this puzzle we will have god in a virtual form. Thus, no sentence will contain any part of god.
    6. It is for these reasons that Non believers easily prove that god doesn't exist and any one who wants to understand god must stop using languages and start feeling the meanings of verses of scriptures.

  4. "Nodes immediately dominated by a node C commands every node dominated by that immediate dominated node." What did I just hear??? Could someone please explain, I'm very confused on this matter… Is this a run on sentence or what's going on?

  5. I'm south korean student. i learning syntax in univ. it's so difficult to me. so finally i tried to search some useful video for syntax and found your video. thank you thank you so much😢 i understand it now^^ if i get a good grade after this semester, i will pray for your happiness😄

  6. You could have edited out the bloopers. As a non-native speaker,
    • having to parse a foreign language,
    • translate all these silly grammatical terms into descriptive identifiers,
    • read all the stuff appearing on the screen and going away while I have to listen (ergo not being able to read them unless I pause),
    • plus read the overlays (which are especially hard to read due to the semi-transparency, and are a feature that will be removed by Google soon anyway),
    and guess what you actually meant through the bloopers,
    simply is too much.
    The monotone voice doesn’t exactly improve on that either. (Seems like you are not passionate about it and rather tired. Why are you doing this then?)

    Too bad, since the content is very interesting to me. And I subscribed due to your award-deserving video on the history of language. So I know how well you can do. :/

  7. I am Arab and this is very well-known in Arabic from 7th century known as
    الاعراب ، النحو

  8. I am taking a Chinese course for back credit, I don’t understand anything he say. I am truly sorry what is x Bar theory, OT, or wtf is generative phonology. My instructor just does not care in class.

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