标准美语发音的13个秘诀 CD 1 Track 6（在线收听）

Staircase Intonation                                       CD 1 Track 6 

So what is intonation in American English? What do Am ericans do? We go up and down staircases. We start high and end low.

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Every time we want to stress a word  or an idea, we just start a ne w staircase. That  sounds simple enough, but when and where do you start a new staircase? 

Statement Intonation with Nouns 

Intonation or pitch change is primarily used to introduce new information. This means that when you are making a statement for the first time, you will stress the  nouns.

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