1Diessel, Holger,Michael Tomasel o. A new look at the acquisi-tion of relative clauses[J].{H}LANGUAGE,2005,(81):882-906.
2Hamilton, Robert L. Is implicational generalization unidirectional and maximal? Evidence from relativation instruction in a sec-ond language[J].{H}LANGUAGE LEARNING,1994,(44):123-157.
3Keenan, E,B. Comrie. Noun phrase accessibility and universal grammar[J].Linguistic Inquiry,1977,(08):63-99.
4Kuno,S. The position of relative clauses and conjunctions[J].Lin-guistic Inquiry,1974,(05):117-136.
2Diessel, H. & M. Tomasello. 2000. The development of relative clauses in spontaneous child speech [J ]. Cognitive Linguistics Ⅱ: 131-151.
3Doughty, C. 1991. Second language instruction does make a difference [J]. Studies in Second Language Acquisition 13: 431-469.
4Eckman, F. , L. Bell, & D. Nelson. 1988. On the gemeralization of relative clause instruction in the acquisi tion of English as a second language [J ]. Applied Linguistics 9 : 1-20.
5Eisenberg, S. 2002. Interpretation of relative clauses by young children: another look [J ]. Journal of Child Language 29: 177-88.
6Gass, S. 1979. Language transfer and universal grammatical relations [J]. Language Learning 29/2: 323-344.
7Hamilton, R. 1994. Is implicational generalization unidirectional and maximal? Evidence from relativizationa second language [ J ]. Language Learning 44/1 : 123-157.
8Izumi, S. 2003. Processing difficulty in comprehension and production of relative clause by learners of English as a second language [ J ]. Language Learning 53/2: 285-323.
9Keenan, E. & B. Comrie. 1977. Noun phrase accessibility and universal grammar [J ]. Linguistic Inquiry 8: 63-99.
10Keenan, E. & B. Comrie. 1979. Noun phrase accessibility revisited [J]. Language 55/3: 649-664.