本研究证实了句法知识，尤其是显性句法知识对母语者和第二语言学习者的影响。
The study in the thesis proves the influence exerted by syntactic knowledge, especially the explicit type, on native speakers and second language learners.
这说明受试具有英语定式句中题元动词不能显性提升而情态助动词必须显性提升的句法知识。
They also have the knowledge that English modal verbs should be placed on the left of the negator and at the beginning of the interrogatives.
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