In this paper, a tentative approach is made to combine several traditional IL paradigms into Levelt`s Speech Production Model to have an eclectic frame which is believed to be more efficient in explaining the idiosyncratic phenomena of the language learner`s language. The speech production strata proposed by Levelt are searched by stages in view of IL controls and linguistic materials. The traditional classification of knowledge `that` and knowledge `how` of IL is discussed in detail and reassigned to the production stages of conceptualizer, formulator and articulator, with emphasis on the formation of prevebal message and internal speech in IL.