This paper argues that, on one hand, there are compelling theoretical reasons to believe that interlanguage (IL) grammars are both systematically and randomly variable, and that the relationship between the two types of variation is a complex one. At any one stage of IL development, some structures may be systematically variable, but at the same…

Deviation for native-speaker norms in non-native varieties of English are often regarded as interlanguage features which must either be weeded out through teaching or which the learner will eventually abandon as his competency moves in the direction of the target language. It is argued in this paper that some deviations are motivated by style,…