句型6
　　as, though, although引导的让步状语从句。
　　[注意]although位于句首;though位于句首或句中;as位于句中=though。它的词序是把句中强调的形容词、副词、动词或名词放在连词前。[参考倒装结构] 请注意下列句式的变化：
　　[例句]
　　1. Although/Though I'm young, I already know what career I want to follow.
　　→Young as/though I am, I already know what career I want to follow.
　　我虽然年轻，但我已经明白我应该追随什么样的事业。
　　2. Although/Though I respect him very much, I cannot agree with his idea.
　　→Much as/though I respect him, I cannot agree with his idea. 虽然我很尊重他，但是我不同意他的观点。
　　3. Although/Though he is a child, he knows a lot of Chinese characters.
　　→Child(省略冠词)as/though he is, he knows a lot of Chinese characters. 他虽然还是个孩子，却认识了许多汉字。
　　4. Although he tried, he couldn't solve the problem.
　　→Try as he might, he couldn't solve the problem. 尽管他努力了，但是他没有解决问题。
　　5. Although it is raining, I'm going out for a walk.
　　→Raining as it is, I'm going out for a walk. 天虽然在下雨，我还是要出去散步。
　　6. Strange as it may seem, nobody was injured in the accident. 这次意外虽然显得不可思议，却没有人受伤。
　　7. Much as I would like to help, I have a lot to do. 虽然我很想帮助你，但是我有很多事要做。
　　8. Object as you may, I will go. 纵使你反对，我也要去。

　　句型7
　　…before…特殊用法(1)"没来得及……就……"
　　[例句]
　　The roof fell before he had time to dash into the room to save his baby.
　　他还没有来得及冲进房间救孩子，房顶就塌了。
　　He ran off before I could stop him. 我还没有来得及阻止，他已经跑了。
　　To my great disappointment, my favorite singer left the concert before I could have a word with her.
　　让我非常失望的是，我还没有来得及和我最喜欢的歌手打招呼，她就已经离开了。

　　句型8
　　…before…特殊用法(2)"过了多久才……"或"动作进行到什么程度才……"
　　[例句]
　　They walked about fifty miles to the west before they saw a village.
　　他们西行50英里才看到一个村庄。
　　The workers worked day and night about three days before everything returned to normal.
　　工人们连续工作3天才使一切恢复正常。
　　He almost knocked me down before he knew it.
　　他几乎撞到我了才意识到。
　　We had walked a long way before we found some water.
　　我们走了很长的路才找到一点水。
　　Five years went by before I knew it. 不知不觉，五年过去了。

　　句型9
　　It was + 时间段+before…."过了多久才(怎么样)……"
　　It was not long before…."不久，就……"
　　It will (not) be +时间段+before…."要过多久(不久)……才……"(before从句谓语动词要用一般时态)
　　[例句]
　　It was not long before he sensed the danger of the position.不久他就意识到他处境的危险。
　　It was five days before he came back. 五天后他才回来。
　　It will be half a year before you graduate from the school. 再过半年你才能毕业。
　　It will not be long before they understand each other. 他们大概不久就会互相了解。

　　句型10
　　in case of…(+n.) "以防;万一";
　　in case that…"以防，万一……"(谓语动词用一般现在时态或should+动词原形)
　　[例句]
　　In case of fire, what should we do?
　　Please remind me about it in case I forget/should forget. 万一我忘了，请提醒我。
　　In case (that) John comes/should come, please tell him to wait.
　　Please take your umbrella in case (that it rains/should rain).带上雨伞，以防下雨。