Three different but speaking on the grammar of forms, but all have a common semantic grammar, that is: the subject I can receive a prime activity of the person, this activity can take place in time: the present, past, future..., the operation should have an additional element that is appropriate widgets have written letters. The same language in grammar, semantics. Grammar concepts are also known as innovative concept category. The grammatical meaning is the meaning of categories have been generalized from the essential vocabulary meaning of lexical units. For example:
đang được dịch, vui lòng đợi..