Stry of higher and secondary specialized education of the republic of uzbekistan state university of world languages

central vowels	back vowels
back-advanced vowel
English	[i: ,e , ǽ]	[i]	[Λ ә: ә]	[a: ,o ,o: ,u:]	[u]
Uzbek	[i]	[ e]	[ o' ]	[ a u o ]	-
Russian	[ы], [а]	-	[ ы], [а]	[у], [о]	-

Moving up and down in the mouth the tongue may be raised to different height towards the roof of the mouth.
1. When the front or the back of the tongue is raised high towards the palate the vowel is called close in English and Russian languages.
They are – [ i: I u u:].
2. When the front or the back of the tongue is as low as possible in the mouth open vowels are pronounced in English and Russian languages.
They are – [ǽ a: o o:].
3. When the highest part of the tongue occupies the position intermediate between the close and the open one mid vowels are pronounced only in English. They are – [e Λ ə: ə].
According to the vertical position of the tongue in Uzbek and Russian vowels are divided into narrow, mid and broad: