source: learnenglish.britishcouncil.org
British people and American people can always understand each other – but there are a few notable differences between British English and American English
Grammar
Americans use the present perfect tense less than speakers of British English and a British teacher might mark wrong some things that an American teacher would say are correct.
- US Did you do your homework yet?
- Brit. Have you done your homework yet?
- Brit. I’ve got two sisters.
- US I have two sisters.
- Brit. I’ve got to go now.
- US I have to go now.
Spelling
There are also a number of different spelling rules between British English and American English.
1 Some words that end in ‘-tre’ in British English end in ‘-ter’ in American English.
2 Some words that end in ‘-our’ in British English end in ‘-or’ in American English.
- US color, labor
- Brit. colour, labour
- US catalog, program
- Brit. catalogue, programme
Vocabulary
There are a lot of examples of different words being used in British and American English. Here are a few of the commonest.
- angry (Brit.) = mad (US)
- autumn = fall
- boot (of a car) = trunk
- chemist’s = drug store
- cupboard = closet
- flat = apartment
- lift = elevator
- nappy = diaper
- pavement = sidewalk
- petrol = gas/gasoline
- rubbish = trash
- tap = faucet
- trousers = pants
source: learnenglish.britishcouncil.org