we call this "UPPERCASE" and "lowercase"

You can listen to me spelling my name here:-

Capitalisation

When writing and when spelling a word for someone it is sometimes necessary to let the person know when letters need to be written in CAPITALS and when they need to be written small.
"How do you spell UNESCO please?"	"Capital U-N-E-S-C-O."
"How do you spell T-Online please?"	"Capital T dash capital O small n-l-i-n-e."
"How do you spell 1&1 Profi please?"	"1 ampersand 1 capital P small r-o-f-i."

hoc ngoai ngu

giai tieng anh

gia su tieng anh

cách học tiếng anh giao tiếp

cách học tiếng anh

!Note - In computing we call this "UPPERCASE" and "lowercase".

When writing names use capital and small letters.

First Name/Christian Name Middle Name or (Middle Initial) Last Name/Surname Elizabeth Mary M Windsor John Wesley W Sinclair

Naturally speaking

When two letters appear next to each other we say "double __"

Follow the dialogue.

What's your full name, please?	My first name is Sonja and my last name Pascalli
Sorry , what was your last name again?	Pascalli.
I'm sorry I don't understand. Could you repeat that more slowly, please.	Pasc-all-i.
How do you write that? Could you spell it, please?	P-a-s-c-a-double l-i
And your first name please?	Sonja
Pardon?	Sonja - S-o-n-j-a.
And what is your telephone number, please?	2-3-8-7-1-8
Thank you.	You're welcome.