This document provides an overview of syntax and syntactic analysis. It defines syntax as the study of rules governing how words are combined to form sentences. Phrase structure rules determine the structure of phrases like noun phrases and verb phrases. Generative grammar uses a small set of phrase structure and transformational rules to generate an infinite number of grammatical sentences. Trees are used to represent syntactic structure. The document discusses properties of syntactic knowledge like recursion and ambiguity. It contrasts deep structure and surface structure.
Tree diagrams
- Wh question
I. DEFINITION OF WH-QUESTION
Wh question is a question asks for information by using the question word such as
what, who, where, why, when, whom, whose, which , and how
Structure:
Q + aux + subject/object/complement?
Ex:
What do you do ?
Who did you meet last night?
II.TREE DIAGRAM
1) Simple tenses
Why are you (t) working hard these days?
Why was it (t) snowing in the summer?
3. Perfect tenses
Exercise
Analyzing the following sentences by using tree diagram.
1) How long have you learned English ?
2) Why will students be absent tomorrow?
THANKs FOR your ATTENTION
Tree diagrams
- Wh question
I. DEFINITION OF WH-QUESTION
Wh question is a question asks for information by using the question word such as
what, who, where, why, when, whom, whose, which , and how
Structure:
Q + aux + subject/object/complement?
Ex:
What do you do ?
Who did you meet last night?
II.TREE DIAGRAM
1) Simple tenses
Why are you (t) working hard these days?
Why was it (t) snowing in the summer?
3. Perfect tenses
Exercise
Analyzing the following sentences by using tree diagram.
1) How long have you learned English ?
2) Why will students be absent tomorrow?
THANKs FOR your ATTENTION
References
Webb, S. (2007). Learning word pairs and glossed sentences: The effects of a single context on vocabulary knowledge. Language Teaching Research, 11, 63-81.
http://leoxicon.blogspot.com/2013/05/context-or-co-text.html
References
Webb, S. (2007). Learning word pairs and glossed sentences: The effects of a single context on vocabulary knowledge. Language Teaching Research, 11, 63-81.
http://leoxicon.blogspot.com/2013/05/context-or-co-text.html
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2. 2
Definition of Syntax
Syntax is the study of the rules governing the way
words are combined to form sentences in a
language.
*garden the
*Children are
*Work in
This class: what syntactic structure is and what
the rules that determine syntactic structure are
like.
3. 3
Syntax
Properties of syntactic knowledge:
Humans can understand & produce an infinite number of
sentences they never heard before
“Some purple gnats are starting to tango on microwave”
Our grammar can understand and produce long
sentences
“Bill said that he thought that the esteemed leader of the house
had it in mind to tell the unfortunate vice president that the calls
that he made from the office in the White House that he thought
was private…..”
Determine the grammatical relations in a sentence
Mary hired Bill. Vs. Bill hired Mary
4. 4
Syntax & meaning
Non-sense sentences with clear syntax
Colorless green ideas sleep furiously.
A verb crumpled the milk.
I gave the question a scuba-diving egg.
*Furiously sleep ideas green colorless.
*Milk the crumpled
*the question I an egg scuba-diving gave.
Sentences are composed of discrete units that are
combined by rules. These rules explain how speakers
can store infinite knowledge in a finite space- brain.
5. 5
Generative Grammar
Noam Chomsky 1950s
Generative = a very explicit system of
rules specifying what combinations of
basic elements result in well-formed
sentences.
Defines the syntactic structure of a
language.
6. 6
Generative Grammar
“all and only”= all grammatical sentences
and only grammatical sentences
Finite rules infinite number of well-
formed sentences
Productivity of language
Phrase structure rules
Transformational rules
7. 7
Phrase structure rules
Some words seem to belong together:
{The crazy man} {is jumping off the bridge}
Groups of words that belong together are called
constituents
The component that determines the properties of
the constituent is the head, and the constituent
can be referred to as a phrase: e.g. noun
phrase
8. 8
Phrase Structure Rules
If we look at phrases, some patterns emerge:
Det N
the instructor = NP
Det N
a friend = NP
Det N
some homework = NP
Det N
two classes = NP
9. 9
Phrase Structure Rules
some more patterns:
V Det N
call the instructor= VP
V Det N
meet a friend = VP
V Det N
do some homework = VP
V Det N
skip two classes = VP
10. 10
PSR
and yet more patterns:
Prep Det N
with the instructor= PP
Prep Det N
from a friend = PP
Prep Det N
with some homework = PP
Prep Det N
after two classes = PP
11. 11
PSR
Rules for determining the structure of phrases
Generate a lot of sentences from a small
number of rules.
The structure of a phrase will consist of one
or more constituents in a certain order.
What does a NP consist of?
“noun phrases have a Det and a N”
NP Det N
12. 12
Lexical Rules
We need lexical rules to specify which
words can be used when we rewrite
constituents such as N.
PN {Mary, George}
N {girl, boy, dog}
Art
Pro
13. 13
PSR
V Det N V Det N V Det N
run a marathon eat the food read the book
V Prep Det N V Prep Det N
go to the store talk with a teacher
V Det N Prep Det N
take your sister to the library
“Verb phrases have a V, (sometimes) an NP,
and (sometimes) a PP”
VP -> V (NP) (PP)
14. 14
The main phrase structure rules
1. S → NP VP
2. NP → {Det N, Pro, PN}
3. VP → V (NP) (PP) (Adv)
4. PP → P NP
5. AP → A (PP)
15. 15
Phrase Structure Rules & tree
diagrams
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
16. 16
Phrase Structure Rules
VP → V (NP) (PP)
S → NP VP
took the money (VP)
took
NPV
took the money from the bank
VP
took
NPV PP
from
NPP
the
Det N
bank
the
Det N
money
the
Det N
money
17. 17
Example (1)
The old tree swayed in the wind
old
V PP
in
NPP
the
Det N
windThe
N
swayed
S
NP VP
Det Adj
tree
18. 18
Example (2)
The children put the toy in the box
V PP
in
NPP
the
Det N
boxThe
N
put
S
NP VP
Det
children
NP
the
Det N
toy
20. 20
Back to Generative Grammar
How superficially different sentences
are closely related?
How superficially similar sentences
are different?
21. 21
Deep and surface structure
The deep structure is an abstract level of
structural organization in which all the
elements determining structural interpretation
are represented.
Sentences that have alternative interpretations
Sentences that have different surface forms but
have the same underlying meaning.
Surface structure= how the sentence is
actually represented
22. 22
Deep and surface structure
How superficially different sentences are closely
related?
Charlie broke the window.
The window was broken by Charlie
Charlie who broke the window.
Was the window broken by Charlie?
Difference in their surface structure =
difference in syntactic forms
BUT they have the same ‘deep’ or underlying
structure
23. 23
Structural ambiguity
How superficially similar sentences are different?
(multiple meanings)
E.g. Annie whacked the man with an umbrella
Same surface structure but different deep
structure
The boy saw the man with a telescope
The question is: What is the scope of "with the
telescope"? Does it modify only "the man" or does
it modify "saw the man"?
24. 24
Structural Ambiguity (1)
The boy saw the man with the telescope
V PP
with
NPP
the
Det N
telescopeThe
N
saw
S
NP VP
Det
boy
NP
the
Det N
man
Meaning: Using the telescope, the boy saw the man
25. 25
Structural Ambiguity (2)
The boy saw the man with the telescope
V
PP
with
NPP
the
Det N
telescopeThe
N
saw
S
NP VP
Det
boy
NP
the
Det N
man
Meaning: The boy saw the man. The man had a telescope.
26. 26
Recursion
Rules can be applied more than once in
generating sentences
E.g. repeat prepositional phrase more than once
The gun was on the table near the window in the
bedroom in the pink house
Put sentences inside sentences
This is the cat that ate the rat that ate the cheese that
was sold by the man that lived in the city that was on
the river…
No end to recursion- produce longer complex
sentences
27. 27
Back to recursion
[Mary helped George]. (A sentence)
[Cathy knew] that [Mary helped
George].
(a sentence within a sentence)
[John believed] that [Cathy knew] that
[Mary helped George].
The word that introduces the
complement phrase
28. 28
Complement Phrases
Cathy knew that Mary helped George
That = complementizer (C) introducing
complement phrase (CP)
The CP comes after the VP
S NP VP
VP V CP
CP C S
30. 30
Transformational Rules
Phrase structure rules represent ‘deep’
structure- always generate structures with
fixed word order.
Mary saw George recently
Recently Mary saw George
Transformational rules= take a specific part
and attach it in another place
You will help Cathy
Will you help Cathy?
32. 32
Exercises
Rewrite the following sentences with Phrase
Structure Rules. Hint: Locate your principal NP and
VP before beginning.
a) Miriam swims.
b) The dog is barking.
c) Peter told the truth.
d) The wicked witch spilled the potion.
e) The runner with the best time won the prize.
33. 33
Exercises
Draw a labeled tree diagram for the
following English phrases. (Hint: what
part of speech is the leader for the
phrase?)
a. ancient pyramids
b. in the early evening
c. Drove a car
34. 34
Exercises
Draw phrase structure trees for the
following sentences:
The puppy found the child
The ice melted
The hot sun melted the ice.
The house on the hill collapsed in the wind.
The boat sailed up the river.
A girl laughed at the monkey.
35. 35
Draw two phrase structure trees
representing the two meanings of the
sentence:
The magician touched the child with the
wand.
Exercises
36. 36
Exercises
In what way these sentences are
ambiguous?
We met an English history teacher
Flying planes can be dangerous
The parents of the bride and groom were
waiting outside
The students complained to everyone that
they couldn’t understand.