Some abbreviations are only written forms; they are always pronounced as the full word.
Mr (Mister) Dr (Doctor) St (Saint or Street) Rd (Road)
Within a written text some abbreviations are used as notes to organise the language and give extra information to the reader.
etc./et'setra/ and so on [Latin et cetera]
i.e. (1-Å): that is to say [Latin id est]
e.g. (E-G) for example [Latin: exempli gratia]
PTO(P-T-O) please turn over
NB(N-B) please note [Latin: nota bene]
Clippings: Some words are normally used in an abbreviated form in informal situations.
ad/advert(advertisement) bike(bicycle)
phone(telephone) case(suitcase)
exam (examination) board(blackboard)
fridge(refrigerator)lab(laboratory)
plane(aeroplane) rep (business representative)
TVor telly(television)
Some abbreviations you might see on a letter/fax/envelope.
c/ocare of [e.g. T. Smith, c/o J. Brown; the letter goes to J. Brown's address]
enc.enclosed [documents enclosed with a letter, e.g. enc. application form]
PSpostscript [extra message after the letter has been ended]
asapas soon as possible [e.g. ring me asap]
RSVP(R-S-V-P) please reply [French; repondez s'il vous plait]