In the two articles, The fine structure of the left periphery and its locality and the left periphery of Rizzi, there seems to be no incompatibility but rather a constant focus on the fist elucidating the structure of the left and using the left to refine the principle of relativized minimality. The major problem is that the problems presented in the first are not necessarily addressed in the second, such as the details on the zero constant. The second article can be considered a supplementary article that builds, to some extent, on the information presented in the first, such as the overall structure and some of the adverbial analyses. To this extent it builds on 1997. One of the main aims of Rizzi 1997 is "to explore certain aspects of the fine structure of the left periphery" and to "postulate an articulated set of X-bar projections which will be supposed constitute the complementation system” (Rizzi 1997: 281). It also discusses some of the "contiguity and anti-contiguity effects involving C-system elements and different types of subject position fillings (overt DP, PRO, trace) that lend themselves to explanation in terms of putative structure ". of system C”. Rizzi (1997) depends on a few characteristics, whether 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 entering the required Spec-head configuration with the preposed phrase”. Criteria requirements, unlike feature checking, will not go away. Finally, Rizzi must also assume, within the theory of relativized minimality, the principle of the empty category (ECP) and the head movement constraint (HMC) and therefore the government of the leader. The rele...... middle of paper ......new structure for the left periphery which looks like this:Force Top* Int Top* Focus Mod* Top* End IPThis model allows you to 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-strings. Some belong only to modifiers, such as attentively, and therefore have no effect on quantificational chains (Rizzi 2004: 244). “A simple preposing adverb targets the Mod position”, but can also target “the ordinary Focus position” and “negation belongs to both the quantificational class and the modifying class” (Rizzi 2004: 244). This is one of the main differences between the first and second articles, the deeper analysis of the overall structure of the left periphery and how the adverbs help to clarify it and explain their placement..