英语状语从句精讲

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2 ． 由 on condition(that) ； provided(that) ； providing (that)(假若；倘使)；supposing(that)等引导的条件状语从句。
You can go swimming on condition that you don’t go too far from the river bank.只有不离河岸太远你才能下去游泳。
尽管警察认为他是最有可能的一个，由于没有确凿的证 据，他们就不能拘留他。
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注意： as 引导的让步状语从句多用于书面语，语序要 倒装。
Difficult as the task was，they managed to finish it in time. 虽然这项任务很难，他们还是设法及时完成了。 Much as I like it，I won’t buy the expensive car. 尽管我很喜欢这辆车，但我不会买这么贵的车。
英语状语从句精讲
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1．It is＋...since……自从…… (四川卷)As it reported，it is 100 years since Qinghua University was founded. 据报道，自清华大学建立以来有100多年了。
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3．引导时间状语从句的连词有when，whenever，while， as，each time，as soon as，no sooner...than，hardly...when，the second，immediately等。
Just use this room for the time being，and we’ll offer you a larger one as soon as it becomes available.
2．before (1) 若表 示 “ 还 未 …… 就 …… ； 不 到 …… 就 …… ； …… 才 …… ； 趁 …… ；还 没 来 得及 …… 就 ……” 时 ， 需 用 连 词 before。 He rushed out of the room before I told him the news. 我还没来得及告诉他消息，他就冲出了房间。 Please write it down before you forget it. 趁你现在没忘把它记下来。
Jerry一听到消息就跑回家，结果却发现自己的房子被烧 毁了，所有的家具都已化成灰烬。
No sooner had we arrived at the station than the train left. 我们刚到车站，火车就离站了。
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while表示“虽然，尽管”之意。 While travel can broaden your mind，I don’t think it’s a good idea to spend too much time and money on it. 尽管旅游能够增长见识，但是我认为你不应该在这方面 花费太多的时间和金钱。
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We were about to set off when it suddenly began to rain. 我们刚要出发，突然下起雨来。 We were having a meeting when someone broke in. 我们正开着会突然有人闯入。 He had just fallen asleep when the phone rang. 他刚刚睡着电话就响了。
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1．通常由if，unless如果不，除非，as (so) long as只要， in case(that)“结果，万一”等连词引导。
In case anything important happens，please call me up. 万一发生了什么重要事情，请打电话给我。 My parents don’t mind what job I do as long as I am happy. 我父母不在乎我从事什么样的工作，只要我高兴就好。 The medicine works more effectively if you drink some hot water after taking it. 这种药如果你热水送服，会更加有效。
Supposing it rains tomorrow，what shall we do? 假设明天下雨我们做什么？
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1．通常由连词where和wherever 引导，从句可位于主句之 前，也可位于主句之后。
(山东卷)The little girl who got lost decided to remain where she was and wait for her mother.
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(2)It will be＋一段时间＋before...多久之后才…… The UN officials say it could be many weeks and even months before a deal is reached. 在协议达成之前还需要许多星期甚至几个月。
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4．When 引导时间状语从句，意为“正在这时”，常用
于以下句式：
be about to do...when... be doing...when... be on the point of doing...when... had just done...when...
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(你)暂时先用这个房间吧。一有更大的房间的话，我们就 会为你安排的。
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Jerry rushed home immediately he heard the news，only to find that his house had been burnt down and all the furniture burnt out.
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2．even if，even though表示“即使，纵然”，有退一步 设想的意味，多用于书面语中。
Tim is in good shape physically even though he doesn’t get
much exercise. 尽管Tim进行的锻炼不多，但他的体型很好。 3．whether(...or)引导让步状语从句，提供两个或两个以
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1．由although，though，as 引导的状语从句although 和 though 同义，用法基本相同。前者较正式，多置于句首；后 者较通俗、口语化。
Although the police thought he was the most likely one， since they had no exact proof about it，they would not arrest him.
那个迷路的小女孩决定待在原地等她母亲。 Keep in touch with your family members wherever you are in the world.不管你在世界上的什么地方，都要跟家人保持联 系。
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2．地点状语从句在句首时常兼有抽象条件意味。 Where there’s a will，there’s a way. 有志者事竟成。 Where(ver) there’s plenty of sun and rain，the fields are green. 哪里阳光雨水充足，哪里的田野就绿油油。
上假设。 Whether I go alone or he goes with me，the result will be the
same. 我自己走还是他跟我一起走结果都是相同的。
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4．由wh词＋ever引导让步状语从句。 Whatever happens (may happen)，don’t be surprised. ＝ No matter what happens (may happen) ， don’t be surprised. 不管发生什么都别吃惊。