Ngữ pháp tiếng Anh là gì?

What is English Grammar?Grammar is one of the several sciences of languages. Philology, the science of the history and creation of language, includes: phonetics, a science of articulate sounds;etymology, a science of word origins; and grammar, a science of how we use words. We can define grammar as a "science of language" that has specific parts—and laws on how we use these parts in a sentence.