describes grammatical systems as closed, i.e. as having a finite set of options. By contrast, lexical sets are open systems, since new words come into a language all the time.
These grammatical systems play a role in the construal of meanings of different kinds. This is the basis of Halliday’s claim that language is met

مطلب مرتبط :   دانلود تحقیق با موضوع به‌کمک، بگذارند.، رفت.، مجذوب