生成语法认为，英语长距离疑问句的生成要依赖疑问词的连续循环移位，而构式语法则认为，信息地位兼容的构式相互组合就生成长距离疑问句。现有二语研究文献表明，疑问词所在的句法位置(句式变体)和从句的信息地位，都可能影响英语长距离疑问句的二语习得状况。基于生成二语观和构式二语观，本研究首先对长距离疑问句的六种变体句的二语习得状况作出预测，然后以规范的实证调查方式加以验证。本研究发现，在中介语终端状态中，句式变体和信息地位之间的交互作用是影响长距离疑问句是否合法的主要因素，而现有研究大多只关注其中的一个因素，因此得出的结论都过于片面。

In Generative Grammar, English Long-distance questions (LDQs) are derived by way of moving wh-phrases successively, whereas in Construction Grammar, they are combinations of different constructions with compatible informational status. In the current L2 literature, both the location of wh-phrases (syntactic variants) and the information status of the embedded clauses are the possible factors that affect L2 acquisition of English long-distance questions. This study, on the basis of Generative L2 views and Construction L2 views, formulates predictions concerning L2 acquisition of 6 variants of English LDQs and verifies them by way of a standard empirical study. It is found in this study that the current L2 research is confined either to syntatic variant or to informational status (thereby leading to one-sidedness in their conclusions), whereas the major factor that affects the grammaticality of LDQs in the end-state interlanguage grammar is the two-way interaction between syntactic variant and informational status.