同学你好，该知识点来自沪江网校《西班牙语零起点至精通（0-C2）【双11专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好~

时间：I don't know when she will realize the problem.
地点：No one was told where the headmaster had put the key.
原因：I have no idea why he was so angry.
目的：Better takes more clothes in case the weather is cold.
结果：The boy is so young that he can't go to school.
条件：We will stop playing if it rains.
让步：I will remain firm though I must lower my physical sights.
比较：I have no more than two dollars left in my pocket.
方式：Just as we sweep our rooms, so we should sweep backward ideas from our minds.

希望帮到同学~