f mental tasks at the same time .РModels based on parallel distributed processing reject the whole notion of 'rule'. Instead, they see mental structure as consisting of elaborate sets of weighted connections between separate items. it constitutes an affront to one of the central precepts of linguistics, namely that language is rule一governed.РUnit7 Linguistic aspects of interlanguageР课后思考题:РChapter 1 Introduction: Describing and explaining L2 acquisitionРTwo cases studiesРI .A case study of an adult learnerРWhat did Schmidt want to know from the case study of the adult Learner ?РWhy did Schmidt focused on some grammatical features such as the use of be,・s, and regular past tense ?РBecause those grammatical features are very typical and easy to the learners at the beginning of their studies.