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2024届高考英语二轮复习：状语从句课件-(共19张PPT)(共19张PPT)状语从句状语是句子中的一个重要附属成分，从情况、时间、处所、方式、条件、对象、肯定、否定、范围和程度等方面对谓语中心词进行修饰、限制。
状语从句（副词性从句）是在句子中做状语的，起副词作用的从句。
状语从句可以修饰谓语、非谓语动词、定语、状语或整个句子。
概念分类状语从句时间状语从句条件状语从句让步状语从句结果状语从句原因状语从句地点状语从句目的状语从句方式状语从句比较状语从句时间状语从句1. when, while, as引导的时间状语从句when引导的从句动作与主句动作可以同时发生也可以先后发生，动词可用延续性也可用非延续性I was reading a book when he entered the room.I knocked a boy when he passed by.He always bothers me when I am working.时间状语从句while引导的从句动作与主句动作同时发生，动词用延续性I was reading a book while he was doing his homework.as强调主从句动作相伴发生，“一边...一边...; 随着...”As time goes on, he will understand.We watch TV as we eat.2. before, since引导的时间状语从句before：在...之前，才，不久常考句型：a. It will (not) be + 时间段+ before... “要过多久...才/过不了多久...就”It will be a long time before the professor finishes his dictionary.It won’t be a long time before he comes back.时间状语从句b. It was not long before... “不久就...”It was not long before he told me the truth.c. It was + 时间段+ before... “过了...才...”It was two years before we met again.时间状语从句时间状语从句since：自从..., ...以来It is / has + 一段时间+ since...（一般过去时）“自从...已经过了...”It has been five years since I came to the town.It is a month since I began to study German.3. 表示“一...就...”的单词短语引导的时间状语从句a. as soon as: 主将从现/ 主从都用一般过去时As soon as he comes, we will set out for Shanghai.b. the moment, the minute, the instantI wanted to call at him the minute/second/instant he arrived.c. immediately, directlyWe'll come directly we have finished the work.d. hardly/scarely ... when..., no sooner ... than...（主句过完，从句一过）She had hardly had time to sit when the phone rang again.时间状语从句时间状语从句4.until / till引导的时间状语从句a. until / till用于肯定句时，主句谓语动词用延续性I will wait for you until / till you come to see me.b. until / till用于否定句时，主句谓语动词可用延续性或非延续性I didn’t go to bed unit I finished my homework.c. not unit 位于句首，主句部分倒装Not until Tom came in did we stop talking.条件状语从句常考引导词:if, unless, so long as, in case, only if, on condition that... Suppose he can't come, who will do the workThe meeting would be put off in case it should rain.时态：主将从现I will go to hospital if I am free tomorrow.She was allowed to go back on condition that she would sleep.让步状语从句常考引导词although, though: 尽管，可与yet, still, nevertheless连用，不能和but 连用Though he seems happy, yet he is worried.He says he'll pay, though I don't think he will.as：从句倒装Successful as he is, he is not proud.while：尽管While he is ugly，he is smart.让步状语从句常考引导词even if/ thoughEven if I am young, I can manage it.no matter +疑问词/ 疑问词+everNo matter what / Whatever he faces, he will never give up. whether... or notWhether you believe it or not，it's true.结果状语从句a. so + 形容词/副词+ that ...He runs so fast that I can’t catch up with.It is so interesting a movie that I can’t wait to watch.b. such + 名词+ that ...It is such an interesting movie that I can’t wait to watch. They are such good students that the teachers all like them.原因状语从句because：回答why的问题，语气最强He can’t come because he is ill.since/now that：既成事实的原因Since (now that) you're here, you can help me.as：双方都知道的原因，主句说明结果As it was raining, the match was cancelled.地点状语从句常用where / wherever引导，位于主句前，中或后Stay where you are and don’t move.Where there is a will，there is a way.Wherever there is smoke，there is fire.目的状语从句so that，in order that “为了，以便”（从句用情态动词）He runs fast so that he can get on the first bus.In order that he can finish the work, he didn’t sleep for a whole night.for fear that, in case, “以防”(从句中的谓语动词用should / might / could+动词原形)I will not make a noise for fear that I should disturb you.He takes a torch in case it gets dark before he returns．方式状语从句as “按照”You should wait in line as others do.He did as I had asked.as if / as though （从句可以虚拟）The boy talks as if he were an old man.She paused as if she was waiting for him to speak.比较状语从句than “比...”，用形容词或副词的比较级You look much better than you did weeks ago.There is no prettier girl than Helen is.as...as, not as/so...as ，相同程度的比较，用形容词或副词的原级He knows as much as I do.She doesn't work so hard as you do.。
