Vowels: Diphthongs
Unit 7
Revision: English Pure Vowels
front
central
back
high
i:
ʊ
I
mid-high
u:
з:
e
ɔ:
ə
mid-low
ʌ
æ
ɑ:
low
Vowel Charts: English Pure Vowels
ɒ
Introduction
Diphthongs
/ei/
/ai/
/əu /
/au /
/iə/
/ɔi/
/ɛə/
/uə /
English Diphthongs
Centring diphthongs
Ending in ə
Iə
eə
ʊə
here hare tour
Closing diphthongs
Ending in I
ending in ʊ
eI
əʊ
aI
ɔI
they cry toy
aʊ
know now
English Diphthongs
Closing Diphthongs & Centring Diphthongs
ε
English closing diphthongs with sample words
paid, hide, toy, tow, how
I
ɒ
Centring Diphthongs
集中/中向双元音：
 / iə /
 / eə /
 / uə /
总特征：发音时从各自的起点朝着中元音
/ə/的方向移动，故称为集中双元音。
特别提示：发双元音的要点是要将两个元
音都发出来，发音过程中一定要有唇形的
变化，否则就会显得发音生涩、僵硬，听
起来像两个单元音。
/ Iə / 集中双元音
•发音过程中，双唇稍稍展开；
•牙床从全合到半开；
•发音前长后短，前重后轻；
•发音时声带振动。
/i ə/
/ iə /
ea
ear
ia
eer
ere
iou
idea real realize theatre
ear dear near clear
material industrial
beer cheer peer deer pioneer
here mere
various
Pair work
a queer idea
cheerful tears
from ear to ear
a real hero
fearful sneers
near the theatre
Sentences
We fear we can’t hear him clearly
as he has such a big beard.
He is serious and fierce, but
sincere.
My dear brother will come home
near the end of the year.
Dialogue
A: Where are you, my dear?
B: I’m here, dear.
A: Come near, dear. I can only hear
you, but I can’t see you.
B: Well, I’m here, sitting in a chair
drinking beer. It’s nice beer, dear. Why
don’t you come here and have a glass
of beer?
A: Oh, dear. Beer, beer, beer, I hate
beer.
/eə/
集中双元音
发音时舌端抵下齿，前舌略
略抬起，牙床从开三分之二
到半开；
发音前长后短，前重后轻；
发音时声带振动。
/eə/
/eə/
ear bear wear pear
air air hair chair fair repair
are dare spare share rare square
ere there where nowhere
a parent various area
eir their heir
ar scarce
Pair work
a scared hare
share the pear
a fair in the square
a careless mayor
repair the stairs
a bear on the chair
Sentences
He stared at the mayor who was
sitting on a mare.
There’s scarcely a chair there that
stands wear and tear.
He takes special care of his hair.
Dialogue
A: Let’s go there, Cary.
B: No, I don’t want to go there.
A: Why not, Cary?
B: I’m afraid of the bears on
the stairs.
A: They’re all plastic bears full
of air.
/ʊə/ 集中双元音
•发音时双唇从收圆到半开；
•发音前长后短，前重后轻；
•发音时声带振动。
/uə/
/ʊə/
oor poor poorly
ua
February
usual
ur during curious Europe fury
ure pure sure lure cure
Pair work
a poor doer
a pure jewel
the furious jury
fewer and fewer
poorer and poorer
the curious tourist
Sentences
The doctor from Europe said that
the patient would surely be cured.
There is a duel going on between
the furious jewelers.
I’m sure that’s pure gold.
Dialogue
A: Do you like my jewel?
B: Yes, it’s a nice jewel.
A: Come closer and take another look.
B: Oh my! What a beautiful jewel! Is it
another gift from John?
A: Yes. This is the fifth jewel he’s given
me.
B: Are you going to ask him for more?
A: Sure. I won’t marry him if he doesn’t
give me his biggest jewel.
Closing Diphthongs
合口双元音：
 / ei / / ai / / ɔi /
 / əu / / au /
总特征：发音过程中，口型从开到合，因
此被称作合口双元音。
特别提示：发音时一定要感受到变化的过
程，这是双元音发音的关键。
/eI/
合口双元音
先发 [ e ]音，然后滑向[I ] 音；
双唇稍平，口形从半开到合；
发音前长后短，前重后轻；
发音时声带振动。
/ei/
/eI/
a
ay
ai
ei
ea
ey
game cake labour lazy hatred
day way may
wait rain fail complain sail
neighbour eight weight
break great steak
they hey
Pair Work
May Day
Labor Day
No pains, no gains.
Great changes have taken
place in only one day.
Sentences
An ape hates grape cakes.
My dame has a lame tame crane.
The rain in Spain is mainly on
the plain.
Dialogue
A: Oh, may I stay, Mummy? Please say
I can stay all day.
B: Yes, if they say you may.
A: They’ve got lots of places to play,
and they’ve…
B: Wait, Jane!
A: I’ll take my painting book, and some
of my games.
B: Wait till they say you may.
Comparison
say
pain
main
said
pen
men
fail
grate
cape
feel
greet
keep
[aI ]
合口双元音
•发音前长后短，前重后轻；
•发音过程中，下颚迅速向上移
动，舌尖抵住下齿；
•发音时声带振动。
/ai/
/aI/
y
i
igh
ie
ei
uy
ye
eye
ai
fly by cry
rice time wide private find
night right fight high
lie tie die
either eider height
buy guy
dye
eyed
aisle
Pair Work
quite right
a nice knife
a kind writer
Time and tide wait for
no man.
Sentences
Great minds think alike.
Strike while the iron is hot.
A tidy tiger tied a tie tighter to
tidy her tiny tail.
My wife gave Mr. Snipe’s wife’s
knife a wipe.
Dialogue
A: Are you seeing Mike tonight?
B: Yes. He has a new motorcycle.
A: Did Mike let you ride it?
B: Yes. I tried it. And I like it.
A: Weren’t you frightened?
B: Sure. But I still like it.
Comparison
life
climb
pike
laugh
calm
park
bike
fight
mine
back
fat
man
/ ɔI / 合口双元音
•唇形由圆唇变为扁唇，口型从
开到合；
•发音前长后短，前重后轻；
•发音时声带振动。
/ɔi/
/ɔI/
oy joy soy enjoy coy oyster
employ deploy destroy loyal
oi oil
noise
boil
choice
coin soil join disappoint
Pair Work
toilet paper
joyful boys
make a choice
The boy was annoyed
because his toy was
destroyed.
Dialogue
A: What toy shall I buy for Roy this
time?
B: For Roy? You want to buy him
another toy?
A: Yes, of course. He enjoys playing
with toys.
B: He enjoys destroying toys.
A: My boy will cry if I don’t buy one.
B: Well, you can only spoil the boy.
Comparison
oil
toil
coin
joy
noise
all
tall
corn
jaws
gnows
/ əʊ / 合口双元音
•发音过程中，下颚稍抬高，双唇
由扁平收圆，口型从半开到合；
•发音前长后短，前重后轻；
•发音时声带振动。
/əʊ/
o
ow
oa
ou
oe
ew
so home those told poem note
throw tomorrow show bowl
load toast soap boat road
soul though shoulder
toe hoe
sew
Sentences
Roses have thorns.
As you sow, so shall you reap.
Little strokes fell great oaks.
He posed for a group of photos
with his old fellows.
Comparison
goat
note
own
row
woke
bowl
got
not
on
raw
walk
ball
coal
wrote
soap
cool
root
soup
/aʊ/ 合口双元音
•双唇逐渐收成圆形，并把舌后
部稍稍抬起；
•舌位由低到高，口型由大到小；
•发音前长后短，前重后轻；
•发音时声带振动。
/aʊ/
ow owl cow how now down
crowd allow town flower
power bower
ou mouth out house ground
around mouse loud sound
found our fountain counter
Sentences
Out of sight, out of mind.
Open your mouth and round
your lips.
Now teach me how to plough.
The loud and powerful sounds
from the mower made the
flowers bow down.
Comparison
loud
shout
howl
down
lord
short
hall
dawn