英语中 can 和 can't 发音几乎差不多，如何在口语中区分开来？
英语中有很多连读。
一、连读
(1)“辅音+元音”型连读
在同一个意群里，如果相邻两词中的前一个词是以辅音结尾，后一个词是以元音开头，这就要将辅音与元音拼起来连读。
I’m~an~English boy.
It~is~an~old book.
Let me have~a look~at~it.
Ms Black worked in~an~office last~yesterday.
I called~you half~an~hour~ago.
Put~it~on, please.
Not~at~all.
Please pick~it~up.
(2)“r/re+元音”型连读
如果前一个词是以-r或者-re结尾，后一个词是以元音开头，这时的r或re不但要发/r/，而且还要与后面的元音拼起来连读。
They’re my father~and mother.
I looked for~it here~and there.
There~is a football under~it.
There~are some books on the desk.
Here~is a letter for you.
Here~are four~eggs.
But where~is my cup?
Where~are your brother~and sister?
但是，如果一个音节的前后都有字母r，即使后面的词以元音开头，也不能连读。
The black clouds are coming nearer and nearer.(nearer与and不可连读)
(3)“辅音+半元音”型连读
英语语音中的/j/和/w/是半元音，如果前一个词是以辅音结尾，后一个词是以半元音，特别是/j/开头，此时也要连读。
Thank~you.
Nice to meet~you.
Did~you get there late~again?
Would~you like~a cup~of tea?
Could~you help me, please?
“音的同化”
—常把/d/+/j/读成/dV/，did you听上成了/dIdVu/，would you成了/wudVu/，could you成了/kudVu/。
(4)“元音+元音”型连读如果前一个词以元音结尾，后一个词以元音开头，这两个音往往也要自然而不间断地连读到一起。
I~am Chinese.
He~is very friendly to me.
She wants to study~English.
How~and why did you come here?
She can’t carry~it.
It’ll take you three~hours to walk there.
The question is too~easy for him to answer.
(5)当短语或从句之间按意群进行停顿时，意群与意群之间即使有两个相邻的辅音与元音出现，也不可连读。
Is~it a~hat or a cat?(hat与or之间不可以连读)
There~is~a good book in my desk. (book与in之间不可以连读)
Can you speak~English or French? (English与or之间不可以连读)
Shall we meet at~eight or ten tomorrow morning? (meet与 at，eight与or之间不可以连读)
She opened the door and walked~in. (door与and之间不可以连读)
二、吞音
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【t、d、k、g、p、b】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。
The girl in the re(d) coat was on a bla(ck) bike jus(t) now.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+摩擦音”型如果前面是爆破音，其后紧跟着某些摩擦音（如/f/，/s/，/W/，/T/等），那么前面那个爆破音仅有十分轻微的爆破，而后面那个摩擦音则要完全爆破。
Goo(d) morning, Mr. Bell.
Goo(d) morning, dear.
Uncle Li’s fa(c)tory is qui(te) near to the cinema.
I wen(t) there alone a(t) nine las(t) night.
-Do you know his bi(ke) number? -Sorry, I don’(t) know.
The forty-firs(t) lesson is qui(te) difficult.
Goo(d) luck, Lin Tao.
（摘自百度，若涉及作者权利，请告知，立删）
