The coursebooks

翻译下列句子,谢绝机器翻译

he coursebooks
The six coursebooks that form the core of the course build on a theme-and task-based approach tot prepare students for the New Senior Secondary (NSS) curriculum. Each coursebook comprises four units followed by an assessment, an elective project and appendices.
Units

(t)he coursebooks
那些课本

The six coursebooks [that form the core of the course] build on a theme-and task-based approach [to(t) prepare students for the New Senior Secondary (NSS) curriculum.]

这六份课本构成本课程的核心内容。它们以主题-任务为本的方式，为学员们学习新的中高级课程做好了准备。

Each coursebook comprises four units followed by an assessment, an elective project and appendices.
每个课本都由四个单元构成，而每个单元都附有一个评价、一个可选方案和一些附录。

Units
单元

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昏倒！这个英文好象有一些单词打错了,就边猜边翻了！仅供参考。