精通美語語音四:Track18

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    Exercise 8-4: bit or beat? Bid or bead?
    Read each column down. Next, contrast the single and double tense vowels with each other; and single and double lax vowels with each other. Finally read all four across.
    Tense Vowels Lax Vowels
    1.beat bead bit bid
    2.seat seed hit Hid
    3.heat He'd hit Hid
    4.Pete impede pit Rapid
    5.feet feed fit fin
    6.niece knees miss Ms.
    7.geese He's hiss his
    8.deep deed disk Did
    9.neat need knit Nid
    10.leaf leave lift live