【正文】 American English./ half ask [AmE]advance [Note: However, who, whose and whom are pronounced as /hu:/, /hu:z/ and /hu:m/ both in British and American English.]5) The letter a in consonant binations aft, ask, ass, ath, alf and ance is pronounced as / white why 3) Words in a stressed syllable spelled with a letter o followed by a single explosive consonant, such as dog, not, stop are pronounced by British speakers with a rounded and short vowel / /, whereas in America, people use \ \ with no rounding of lips.s pronounciation symbols) / star / car / / /. Differences in individual sounds1) Americans prefer to use flat \a\, similar to / /, in words path, grass, answer, etc. against the broad a currently used by Englishmen.2)Americans retain the \r\ at the end of the words car, etc. or before consonants as in hard, etc.。3. Differences between BrE amp。 s handle) and butte (an abrupt isolated hill with a flat top) denote features not found in Britain.. hickory (a type of tree of North America which provides hard wood and bears nut), moose (a type of large deer, with very large flat horns, that lives in the northern part of America), tomahawk (a light axe used by North American Indians in war and hunting), wigwam (a tent of the type used by North American Indians)The abovementioned words belong to American English and were borrowed from Amrican Indian languages. And America also borrowed words from the other varieties of languages, including: Spanish and African languages. Words used in one variety are often borrowed into the other. The reasons for the differencesWhy does British English differ from American English? The differences between the two varieties are due to two factors. a) one important reason is the change of BrE itself.As above, the English language, taken to America during the 17th century, was the language used in Britain at that time. Now AmE still preserved many old words, while these words have bae obsolete in BrE. All languages change as time passes, independent linguistic change within each variety may be the cause of some differences. One variety may preserve archaisms which the other has lost, or may introduce new meanings for old words which the other has not introduced. to kick the bucket。 )to bring to a close (to terminate)to e to blows (to begine to fight)to let George do it (to let someone else perform a task which one should do himself)to take one39。 its own features. The features of American EnglishConservation and innovation are two main features of American English. On the one hand, American English has preserved certain older features of the language which have disappeared from British English. A number of survivals of British English mentioned above represent conservation of the American vocabulary. On the other hand, American English is imbued with the frontier spirit, ingenuity, vividness and English invented large numbers of new words and gived new meaning to the old words to meet their various need. It has developed a character of its own, reflecting the life and the physical and social environment of the American people.When we talk about American English, it should be motioned here that American English abounds in idioms of its own.Why is English, especially American English, so heavily idiomatic? Adam Makkai wrote in A Dictionary of American Idioms: The most probable reason is that we develop new concepts, we need new experience for them, but instead of creating a brand new word, we use some already existant words and put them together in a new sense. A few examples mey be given as follows:That will do! (an expression of impatience meaning 39。 on the other hand, there is a difference between national varieties, just as there are subvarieties within them, but those differnces are insignificant in parision with the similarities. English is unmistakably one language, with two major national dialects:British and American. changes, the English Language has developed from a local language spoken by a small number of people in Germanic tribes to its present position as a very important language spoken by a large numbers of people all over the world. The wide spread of English can due to the development of the politics, economy and the society. Meanwhile, the unique character of the English Language is also very unnoticiable.On the one hand, it shares with West Germanic languages many mon words and similar grammatical structures. On the other hand, more than half of the English vocabulary is derived from Latin and French. Besides, English has accepted words from other languages of the world in the course of its historical development. The English Language is a international language. South African English, Canadian English, and so on. British English and American English are the two main varieties of them. As the NonNative English speakers, most of the English learn