And for the Subjacency Principle,the author looks at subjects\' accuracy in rejecting sentences violating Subjacency and its comparison with that of native speakers and focus on whether the subjects show different sensitivity of different language proficiency,which can also be the evidence of the operation of Subjacency Principle and the influence of L1 and L2 input on the process.

On the memory tactics of the second language learning;

Individual learner differences in the second language learning processes: categories and connotations;

What is the role of the universal grammar in the second language acquisition Are the first language acquisition and the second language acquisition identical with respect to the operation of the universal grammar These questions are the chief concerns in this paper.

Multiple factors study on the efficiency of second language acquirement (foreign language) in younger children.;

Review on Testing Second Language Speaking;

The influences of the mother tongues on second language learning;

Decisive Factors in Second Language Acquisition;

Learning motive plays a unique role in second language acquisition of learners and it is a decisive factor to predict the success of second language learning.

The debate over the role of memorized chunks of sentences called prefabricated language (PL) in teenagers second language acquisition (SLA) has a long history.

The Research Trends of L2 Composition-Teaching Theories;

Krashen\'s Acquisition-Learning Hypothesis not only brought about a brand new interpretation of L2 learning,but also a lot of disputes in the field of SLA.

A Tentative Analysis on Input in Foreign Language Teaching;

Both input and output assume an important role in the second language acquisition(SLA) and researches on the two elements constitute an indispensable part of the study of SLA.

As we all know, “input” plays a crucial important role in language learning.