This paper focuses on the verbal scaffolding offered by adults to six-years old children with and without developmental language disorders. Each adult-child dyad interacts in a situation where the child has to give information to the adult, so that the latter can be able to do a construction. The repetitions and the reformulations of children's language by the adults are analysed as well as children's reactions to these adults' verbalizations. Different categories are distinguished. The results show differencies between the two groups of children. Whith the normal children the adults use above all lexical reformulations and partial repetitions; with the language-impaired children the syntactic reformulations and total repetitions appear more frequently. The normal children react more frequently than the language-impaired children. The influence of the situation and of the language disorders is discussed.