Both present simple and present continuous many ways to express presence in English grammar. Although some other languages also make a distinguish between simple and continuous forms, other languages may not. In the absence of any distinction, English learners may find the following explanation helpful to understand this important point of the tense system in English. Often cannot exchange one form with another without changing the meaning.
@tcv@
Chúc bn học tốt và cho mk ctlhn nha (>v<)!!!!!!!!!!!!!!!!!!!!
