发音示范：
待编辑……
20 个练嘴单词：
cat, back, black, fat, as, daddy, guarantee, habit, hijack, cash
lack, mass, match, nasty, pack, rat, sack, tackle, battle, fabric
10 个经典句子：
Don’t worry: we’ve still got masses [=lots] of time.
This color matches your skin tone.
He’s not so old as he claims to be.
The fabric was as soft as silk.
Come back as often as you like.
The software comes with a money-back guarantee. [=a promise that the money you spend on a product will be returned if the product is not good enough]
She has been suffering from a lack of sleep lately./Her problem is lack of sleep./The problem is a lack of money.
The medicine left a nasty taste in my mouth.
I tried to get him to change his mind, but it was a losing battle. [=he refused to change his mind]
Please move to the back of the elevator to make room for others.
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