...意义将任务分为三类:观点差任务（opinion-gap tasks）,推理差任务 (reasoning-gap tasks)，和信息差任务(Information-gap tasks)。任务类型不同引发的交际协商的量不同。
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information gap tasks 信息差任务 ; 信息差型任务
While partial recasts appeared explicit, full recasts were much less explicit in the story description tasks and became increasingly implicit in the information gap tasks.
部分重铸表现为显性，故事描述任务中的完整重铸显性大幅降低，而信息沟任务中的完整重铸则逐渐变为隐性。
The treatment groups differed as to (1) whether they received full recasts or partial recasts, and (2) whether they performed one-way story description tasks or two-way information gap tasks.
实验组互相区别在两个方面：（1）接受的是完整重铸还是部分重铸，（2）执行的是单向的故事描述任务还是双向的信息沟任务。
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