介绍:
音变规则
升调，表示不确定，话没有说完，或者礼貌，经常用于以下几类句型中：
（1） 一般疑问句
Is he coming tonight?
Have you got the ticket?
(2) 反问句
You are definitely coming?
You like it?
(3) 表示安慰或者鼓励
Come with us.
(4) 重复
When did you come ?
用降调表示完结的情况
（1） 陈述句
You came on Tuesday.
I’d like some tea.
(2) 特殊疑问句
When did you come?
What’s the time ?
（3） 带命令口吻的祈使句
Put it over
Go and find it
(4) 感叹句
What an awful film that was！
如果要表示说话人改变主意，或者言外之意，就可以让降升调大显身手了：
（１）含有对比的陈述句
You can come on Tuesday but not Monday.
He doesnt want it but his brother may.
(2 ) 含有保留意见的陈述句
I know his face.
I like the colour of your dress.
(3) 否定或者矛盾
I cant do it .You can.
(4) 警告
Be careful.Don’t be late.
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