“…This suggests that, even though SLI children have produced in greater proportion the propositions in/on/at and to, which seem to arise earlier in development for being cognitively simpler (Grela et al, 2004) and excessively used by adults (King and Normington, provides subsidies for a more detailed analysis. According to King and Normington (1999), some idiomatic expressions commonly used by adults contain the prepositions in/on/at and to, which, coincidentally, were the most used by SLI children. Thus, while they still seem to be ruled by the use of set phrases, even at 5 years old, typically developing children showed to elaborate phrases based on grammatical/syntactic processing.…”