引导目的状语从句的连词

　　主要的有 in order that, so that, in case, for fear等：

　　We used the computer in order that we might save time. 我们使用计算机是为了节约时间。

　　Speak clearly so that they may understand you. 说清楚，以便让他们能明白你的意思。

　　Be quiet in case you should wake the baby. 安静些，免得把婴儿吵醒。

　　He is working hard for fear he should fail. 他努力工作以免会失败。