... based,100 phrase structure grammars and x-bar( 26) f1, f3, f 6 pred ‘love hsubj, obji’tense presentsubj f2, f4, f5def þnum sngpred ‘cat’obj f7, f8pred ‘tuna’2 6 6 6 6 6 6 6 4377777775Typically, ... LFGLexical-Functional Grammar uses a similar semantic extension to the constituent structure (or c -structure as it is called in LFG): the f -structure, which is similar to the feature structures ... phrase structure rule, just as it ispossible to write a crazy transformation that will radically change the104 phrase structure grammars and x-bar structure of a tree. Head-Driven Phrase Structure...