标准美语发音的13个秘诀 CD 3 Track 23（在线收听）

Exercise 4-11 : Voiced and Unvoiced Sounds with T 

This exercise is for the practice ofthe difference between words that end in either a vowel or a voiced consonant, which means thatthe vowel is lengthened or doubled. Therefore, these words are on a much larger, longer stairstep. Words thatend in an unvoiced consonant are on a smaller, shorter stairstep. This occurs whether the vowel in question is tense or lax.

图片1