英语语法分析

Performance was modelled for scenarios with pretest probabilities of 5% and 50%.

针对预测试概率为5%和50%的不同情况进行了性能建模。

The experiment is composed of two pieces of writing for pretest and four passages writing.

实验由两部分组成：两篇英文写作前测和四篇写作。

Each group was given three tests - a pretest, a posttest, and a test a week after the first two tests.

每个组进行三项测试——前测、后测以及两项测试后紧接一周的测试。