English uses three types of generic NPs: bare plurals ("Lions are dangerous"), definite singulars ("The lion is dangerous"), and indefinite singulars ("A lion is dangerous"). These three NP types are not interchangeable: definite singulars and bare plurals can have generic reference at the NP-level, while indefinite singulars are compatible only with sentence-level genericity. This study investigates whether L1-Russian and L1-Korean L2-English learners, whose article-less L1s do not morphologically encode the distinction between the two types of genericity, can distinguish between the different types of English generics. The results of a written acceptability judgment task with intermediate/advanced L2-learners showed that the learners exhibited sensitivity to the two types of genericity. They were target-like on their interpretation of bare plural and indefinite singular generics, but had not acquired the interpretation of definite singular generics. Theoretical implications of these findings are discussed. (Contains 3 figures, 3 tables and 24 footnotes.)