The most widely understood English dialect
Standard american english
There are several Englishes, and several of them are considered standard, or general. British English, of course, is one of them, but not the only one. American English is a standard English, and is spoken widely throughout the world. The English spoken in India is also standard, and there may be a few others.
Writing a school paper
talking to a school teacher:
The standard convention in American English is to use the period. However, in British English that is not the standard. So, you can do either one and be okay, but it would be best to use the convention that follows more what you write.
Standard american english
There are several Englishes, and several of them are considered standard, or general. British English, of course, is one of them, but not the only one. American English is a standard English, and is spoken widely throughout the world. The English spoken in India is also standard, and there may be a few others.
American Standard English is the literary dialect of the United States, spoken in the homes of educated people. Despite its many inventions and neologisms, American Standard English is somewhat old-fashioned in relation to the mother country's, as all transplanted linguistic communities are.
The dialect used in American academic writing is known as Standard American English. This form of English is characterized by grammatical rules, vocabulary choices, and writing style commonly accepted in academic and professional settings in the United States.
"There are" can be contracted to "There're", although this is not a standard American English term.
Standard American English has around 40 phonemes, including vowel and consonant sounds. This count can vary slightly depending on regional accents and dialects.
Writing a school paper
During a job interview
When talking with someone from your hometown
talking to a school teacher:
When talking with someone from your hometown
during a family dinner