主题：【原创】科研仪器英语口语每日一练（发音技巧第三课） 2017/6/6

今天接着6月5日的失去爆破发音技巧，另外大家一定要跟着录音练习，音频我放在附件中。音频请勿商业用途，否则本人追求原创版权责任。

科研仪器英语口语每日一练（发音技巧第三课）
This is Daily English Learning of Analytical Instrument. Today we will talk about pronunciation skills.

我们来学习第三个发音技巧，请您记住，发音技巧的使用程度代表着您的口语流利程度,请大家仔细跟读录音：

第三大技巧：异音

什么叫异音，就是在英语发音中，由于某些情况下为了省力流畅，原本的音节发生变化，异化成另一种发音。异音包括三种类型：浊化，同化，异化

浊化的3大规律：
第一大规律：元音 + 清辅音 + 元音
City      letter      water      pretty      citizen
The sooner, the better.
I think you`d better see a doctor.
You story just doesn`t hold water.
What`s the matter with you.
Stay out of this matter.
第二大规律：元音 + t + l
I have little problem.
第三大规律：连读后要浊化
I`ll think about it.
Can I have a look at it.
Not at all.
Say it again.

同化的三大规律：
第一大规律：相互同化
（1）t + j → t∫
Nice to meet you
I know a lot about you.
I know that you can good English.
Take care that you don`t spoil your new clothes.
How about you.
(2) d + j → dʒ
Could you tell me where the bus stop is?
Did you finish your homework yesterday?
Would you show me the bathroom?
(3) s + j → ∫
God bless you.
Baby, I miss you every day.
Now look what a mess you have done.
(4) z + j → ʒ
How is your boyfriend?
How is your family?

第二大规律： 顺向同化
（1）名词变复数：
I want to buy a lot of English books.
(2) 动词变第三人称单数：
She works in Zaidong Education.
(3) 动词变过去式或过去分词：
She looked very blue yesterday.
(4) t + s : All of the students stop reading.
          It`s raining cats and dogs.
(5) d + s : My friends in America send me a message that the economic forecast is pleasant there.
第三大规律： 顺向同化
（1）Before I eat dinner, I read the newspaper for a while.
（2）He is not the man he used to be.
（3）Don`t worry, you get used to it in no time.
（4）You have to get off here.
（5）That is all he has to do.
（6）I had to go and talk with Jim.
异化的四大规律：
（1）sp + 元音：How do you spend your leisure?
                Actions speak louder than words.
(2) sk + 元音：I`m so scared.
              If I were a millionaire, I would start a school
(3) st + 元音：If you are ready, you may start your work.
              Would you like some steak?
(4) str + 元音： The work is still strange to him.
                He struck me with a stick.
这一板块的内容稍微有点多，您在练习的同时切勿独自一人练习，最好是能与自己的partner一起练习或者在线上多语音交流，这样学习效果会好很多。

如果要练习口语，也可以加我微信jcvstop，我给这个版块建立一个口语爱好者群。口语还是需要平时多找人说。
另外，要强调的一点是，这些都是基础发音技巧，一定要把这些基础打牢，这样我们的专业名词发音时才会流畅。