 Hello, as you know, there are numerous problems involved in a generative grammar with a simple phrase structure component and a lexicon. This unit provides an overview of possible solutions including transformational as well as unification models. In the virtual session, we will first show the difficulties with simple phrase structure grammars. We will then identify what we call common ground that is underlying goals of grammatical theory and we'll discuss the theoretical alternatives to solve the problems in various ways. Use the question sheet and the hyperlinks in it to be guided through this relatively complex virtual session. The mastery worksheet is a dynamic multiple choice test where you have to identify deviations from well-formed syntactic rules. Quite challenging, but with your knowledge about X-bar syntax in mind, this shouldn't be problematic at all. Well, in the practical as usual in syntax, it uses sentences of all types to manifest the ideas underlying different models of generative grammar. Well, the whole unit is fairly complex, so please make use of all its options.