What developments occur in the three types of vocabulary knowledge (passive, controlled active and free active vocabulary knowledge) over one year of study?
经过一年的学习，三种词汇知识（主动词汇、半主动词汇和被动词汇）的增长态势如何；
Researches into vocabulary knowledge measurement develop along three main lines, i. e. the passive vocabulary size, the depth of vocabulary knowledge and free active vocabulary.
词汇知识测量的研究有三条主线，即消极词汇量，词汇知识深度和积极词汇知识。
The present study investigates relationships between three modalities of vocabulary knowledge (passive recognition, active recall and free active written) within two different learning contexts.
本研究探讨了三层面英语词汇量的关系：消极认知、积极回忆和写作词汇。
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