A New Structure for Three-phase to Single-phase Ac-Ac Matrix Converters
Phase structure
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Transcript of Phase structure
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Presented to:
Madam Amna Shahid
Presented by:
Ammara Ahsan
Ayesha Amjad
Najia Majid
Rashda Meraj
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byAmmara AhsanAyesha Amjad
Najia MajidRashda Meraj
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DEFINITIONA phrase is a group of words that doesnot have a subject or a verb.
For example:
Eating a peach
Under the teacher‟s desk
After seeing the Taj Mahal
To buy a new phone
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General ApproachUniversal Grammar (UG) / Language Instinct
DataNative speakers‟ intuitions (acceptability judgments)
Resulting Theory of GrammarWords, phrases, categories for words and phrases (e.g. nouns, verbs, noun phrases, verb phrases)
(basic concepts any theory of grammar must have in order to capture the data)
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1) Every word belongs to a lexical category
2) Lexical categories forms heads of phrases
3) How phrases are formed is governed by rules (= „phrase structure rules‟)
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Rules that determine…
what goes into a phrase („constituents‟)
how the constituents are orderedConstituent: a word or group of words that
function as a unit and can make up largergrammatical units
The component that determines the propertiesof the constituent is the head, and theconstituent can be referred to as a phrase: e.g.noun phrase“noun phrases have a Det and a N”NP Det N
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1. S NP VP
2. NP {Det N, Pro, PN}
3. VP V (NP) (PP) (Adv)
4. PP P NP
5. AP A (PP)
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• NP (Det) N
• PP P NP
The boy (NP)
The
NDet
boy
the boy in the yard
NP
The
NDet
boy
PP
in
NPP
the
Det N
yard
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In P
from a boy in a bubble P NP
Phrase structure rule for PPs:
PP P (NP)
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PP PP
P P NP
in from Det N PP
a boy P NP
in Det N
a bubble
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“Verb phrases have a V, (sometimes) an NP, and (sometimes) a PP”
VP -> V (NP) (PP)
sang
ate the cake
ate the cake hungrily
sang a song in the shower
fell into the pond slowly
Phrase structure rule for VPs:
VP V (NP) (PP) (Adv)
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VP VP VP
V V NP V NP PP Adv
sang ate Det N sang Det N P NP badly
the cake a song in Det N
the shower
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Thank You