A syllable must contain a vowel or a vowel－like sound.（)

When a speech sound changes and becomes more like another sound that follows or precedes i

Which of the following is a front vowel？A．[i:]B．[u:]C．[a:]D．[u]

Which of the following is a back vowel？A．[i:]B．[i]C．[a]D．[u]

When a speech sound changes and becomes more like another sound which follows or proceeds

How do we judge whether a sound is a vowel or a consonant？A.Whether there is sound.B.Whe

An infant can recognize a lot of vowels by the ti