... the negative sentences in English and Vietnamese, Word Grammar perspective 1.5 THE SIGNIFICANCE OF THE STUDY The study – An investigation into negative sentences in English and Vietnamese: A word ... the nature of negatives, and more importantly, to avoid mainly investigated by grammarians and linguists, such as Diệp misunderstandings when communicate with native speakers Quang Ban (2002) in ... OF POPULATION AND SAMPLE 3.6 DATA CLASSIFICATION AND ANALYSIS 3.7 RELIABILITY AND VALIDITY CHAPTER FINDINGS AND DISCUSSION positive sentences are distinguished by the semantic features and 4.1...