sound changing and extra lettering

[Ivy_wang]

Hi everyone, I've got some questions here. If you can help me, I'll really appreciate it.

I'm confused with sound changing rule and extra lettering rule. I don't know when a sound chaning happens and why.It's the same with extra lettering.Could you give me some examples?

Thank you very much!

 

[RonBee]

Hi everyone, I've got some questions here. If you can help me, I'll really appreciate it.

I'm confused with sound changing rule and extra lettering rule. I don't know when a sound chaning happens and why.It's the same with extra lettering.Could you give me some examples?

Do you mean like:

bet, better
let, letter
set. setter
wet. wetter
:?:
​

(Say:

I'm confused about the sound changing rule and the extra lettering rule.)
​

 

[Erabikoosen]

I am currently studying enrolled for the TEFL course I need help on 'sound changing and extra lettering.