In the two articles The fine structure of the left periphery and its location and Rizzi's left periphery there does not seem to be any incompatibility but rather a constant focus on the fist clarifying the structure of the left and using the left to perfect the principle of relativized minimality. The main problem is that the problems presented in the first are not necessarily addressed in the second, such as the details about the zero constant. The second article can be seen as an additional article that builds, to some extent, on the information presented in the first, such as the overall structure and some adverbial analyses. In this sense, it starts from 1997. One of the main objectives of Rizzi 1997 is "to explore some aspects of the fine structure of the left periphery" and "to postulate a complex series of projections of the :281). It also addresses some of the “adjacency and anti-adjacency effects involving elements of system C and different types of subject position fillers (overt DP, PRO, trace) that are susceptible to explanation in terms of the assumed structure of system C.” Rizzi (1997) depends on some characteristics, whether the syntactic movement is a “last resort” or whether it must be a necessary “quasi-morphological” requirement, and whether these requirements are Criteria requirements, “the presence of a head that enters the configuration Spec-head request with the prefixed phrase”. Policy requirements, unlike feature control, will not disappear. Finally, Rizzi must also assume, within the theory of relativized minimality, the Empty Category Principle (ECP), and the Head Movement Constraint (HMC) and therefore head government. The relay......middle of paper......new structure for the left periphery that looks like this:Force Top* Int Top* Focus Mod* Top* Fin IPThis model helps take into account all the different effects. We see them in examples (25), (26), (32-41) and (63). Adverbs are normally modifiers and quantifiers and trigger minimality effects in wh-chains. Some belong only to modifiers, such as attention, and therefore have no effect on quantificational chains (Rizzi 2004: 244). “The simple preposing adverb aims at the Mod position”, but it can also aim at the “ordinary Focus position” and “negation belongs to both the quantificational and the modifier classes” (Rizzi 2004:244). This is one of the main differences between the first and second article, the further analysis of the overall structure of the left periphery and how adverbs both help to make it clear and how it explains their position.