根据题目要求完成下列任务，用中文作答。

 一位教师在课堂上，先直接讲解了定语从句的语法规则，然后呈现了几个例句：

    (1) The man who was sick  is now well.

    (2)This is the very book that I have been looking for.

    (3)1 lend you such books as will interest you.

    接着让学生进行各种替换练习进行语法训练。