标准美语发音的13个秘诀 CD 4 Track 34（在线收听）

Exercise 10-4: Voiced and Unvoiced Endings in the Past Tense CD 4 Track 34 

The following will explain the differences between four expressions that are similar in appearance but different in both meaning and pronunciation.

图片1

Used to, depending on its position in a sentence, will take either a tense [ū] or a schwa. At the end of a sentence, you need to say, ... more than I used tooo; in the middle of a sentence you can say, He usta live there.