Acronyms and abbreviations are formed by putting together the initial letters of some or all words in a phrase or title.()

判断题Sounds are said to be in contrastive distribution if they appear in the same environment.()

判断题Words and phrases like now, yesterday, next week, in three day, etc. are called discourse deixis.()

判断题Afunctional variety is a variety of a language spoken by people living in an are

判断题In telegraphic stage, children use single words to represent various meanings.()

判断题Taboo is an expression that substitutes one which may be seen as offensive or disturbing to the addressee.()