英语发音失去爆破的规则
失去爆破的6个爆破音有3对/p/, /b/, /t/, /d/, /k/, /g/
失去爆破，又叫不完全爆破，就是在某些情况下，只须做出发音的准备,但并不发音,稍稍停顿后就发后面的音。

(1)“爆破音+爆破音”型, 6 个爆破音中的任意2 个相临时,前一个爆破音会失去爆破, 即由相关的发音器官做好这个发音的姿势,稍做停顿后即发后面的爆破音。

例：
The girl in the re(d) coat was on a bla(ck) bike.
The bi(g) bus from the fa(c) tory is full of people.
Wha(t) time does he get up every morning?
This is an ol(d) pi(c)ture of a bi(g) car.
The ol(d) do(c)tor has a ca(t), too.
We' re going to work on a farm nex(t) Tuesday.
What would you like, ho(t) tea or bla(ck) coffee?
It 's a very col(d) day, but it' s a goo(d) day.
You can put i(t) down in the bi(g) garden.
I bought a chea(p) book, but it' s a goo(d) book.
(2) 爆破音+ [ t? ] [d?] --爆破音不完全爆破，即形成阻碍，稍作停顿，不送气: great changes / good jobs / that child / grandchild (3) [t] [d] +舌边音[I]在词中或短语中则形成不完全爆破：at last / good luck / straight line / I'd like to. / a bit louder / friendly / mostIy
(4) [t] [d] + 鼻音[m] [n] ，在词中或短语中则形成阻碍，不完全爆破: Good morning./ good news // start now/ I don' t know / midnight / jus(t) now
( 5)动词否定式的缩写形式，结尾的t 不发音。

He mustn't do it. / You needn't pay for it. / I wouIdn 't Iet him go. / You don't know him. / Mary shouIdn 't caII him at work.。