假设我们弄不到足够的食物，那我们怎么办？
结果状语从句。
由下列连词引导：that，so…that，so that(从句中不带情态动词)，such…that，with the result that等。
注意以下几种结构：
①so+adj/adv+that…
②such(a/an+adj)+n+that…
③so+adj+a/an+n+that=such a/an+adj+n+that…
④so many/much/few/little(少)+n+that…
注意以上结构与定语从句so/such…as的区别。
this is such an interesting/so interesting a film that/as everyone wants to see it/(it).
he didn't plan his time well so that/so he didn't finish the work in time.
他没把时间计划好，结果没按时完成这项工作。
we left in such a hurry that we forgot to lock the door.
我们走得匆忙，把门都忘了锁了。
the village is so small that it cannot be shown in the map.
这村子太小，所以这地图上没有。
jenny is such a clever girl that all the teachers like her very much
= jenny is so clever a girl that all the teachers like her very much
jenny是如此聪明的女孩，以至老师们都非常喜欢她。
i h**e had so many falls that i am black and blue all over.
我摔了许多跤，以至于浑身青一块紫一块。
he has so few friends that he often feels lonely.
他朋友很少，所以经常感到孤独。
i had so little money then that i couldn't afford a little present.
我当时囊中羞涩连一份小小礼物都买不起。
原因状语从句。
由下列连词引导：as(由于),because(因为), since(既然),now (that) (既然), considering that(顾及到), seeing that(由于)。
i do it because i like it.因为我喜欢我才干。(because不能与 so连用)
he couldn't h**e seen me, because i was not there.他不可能见过我，因为当时我不在那儿。
seeing (that) quite a few people were absent, we decided to put the meeting off.
由于好些人都没到会，我们决定延期开会。
now that/since you are all here, let's try and reach a decision.
既然大家都来了咱们就设法做一个决定吧。
as she was ill, she didn't come to the party.
由于病了，她没来参加晚会。
considering that they are just beginners, they are doing quite a good job.
考虑到他们才刚刚学做，他们干得算很不错的了。
重点内容如下：
①because语气最强，用于回答why的提问，可与强调词only,just 以及否定词not 连用。但不可以与so连用。如you shouldn't get angry just because some people speak ill of you.
另外注意与not连用时否定的转移。he didn't do such a thing because he was afraid of his wife.他并不是因为怕他的妻子才做这样的事。
cf:he didn't do such a thing,because he was afraid of his wife.因为怕妻子，他没有做这样的事。
because引导的从句可以被强调：
it was because she wanted to study abroad that she entered for toefl
②as语气较弱，since语气也较弱，但比as正式一些，所说明的原因比较明显或是已知的事实，多用于口语中，所以不应该强调。常置于句首。
as all the seats were full,he stood there.
since you are going,i'll go,too.
③for虽解释为"因为"但只是一个并列连词，它引导的是并列句，不是原因状语从句。
the day was short,for it was december.
2011高考英语语法复习时间状语从句。
由下列连词引导：when,while,as,before,after,once,till,until,since,as soon as,now that,hardly…when,scarcely…when,no sooner…than,有一些表示时间的副词(短语)或名词短语也可引导时间状语从句。如：
directly,instantly,immediately,by the time，the moment,the second,the minute,the instant,every time,each time,next time,the last time等。
重点内容如下：
①when,while,as引导的时间状语从句。
▲as表示"当……的时候"，往往和when/ while通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。
she came up as i was cooking.(同时)
the runners started as the gun went off.(几乎同时)
▲when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。
it was raining when we arrived.(指时间点)
when we were at school, we went to the library every day.(在一段时间内)
when we arrived there,the film had already begun.(先后发生)
▲while意思是"当……的时候"或"在某一段时间里"。主句中的动作或事情在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。在when表示a period of time时，两者可以互换。
please don't talk so loud while/when others are working.
he fell asleep while/when reading.
strike while the iron is hot.( 不可用as或when，这里的while意思是"趁……"
②before状语从句的重点句型。
▲……之后……才：it was a long time before i got to sleep .
▲不多久……就：it wasn't long before he told me about the affair.
▲不等……就：before i could get in a word, he had measured me.
▲刚……就：he hardly entered the room before he heard the telephone ring.
▲先……再：you can h**e a few days to think about it before you make your decision.
③since 引导的从句用延续性动词的过去式(包括过去完成时)，则从句的动作已经结束，从句意思是否定的。如果从句的动词是延续性的用完成时态，从句意思是肯定的。
▲he has never been to see me since i was ill.我病愈后，他一直未来看我。(不在生病了)
▲he has never been to see me since i h**e been ill.我病了，他一直未来看我。
▲i h**en't heard from him since he lived here.
自从他这里搬走，我就没有收到他的信。(不住在这儿了)
▲i know him very well since he has lived here near us.自他住在我们附近以来，我对他很了解。
▲it's three years since i was in the army.我退伍已三年了。(不在服役了)
▲it's three years since i h**e been in the army=it's three years since he joined the army.
我入伍已三年了。
④如果与till与until从句使用的主句是肯定的，则主句中谓语要用延续性动词如果与其使用的主句是否肯定的，则主句中谓语要用短暂性动词。另till从句不可以置于句首，只有until从句可以放在句首。not until 放在句首时主句要倒装。
2019轻松高考 英语语法 状语从句
状语从句 一 在复合句中修饰主句或主句中的某一成分的从句叫状语从句。状语从句通常由从属连词或起连词作用的词组引导，有时甚至不需要连词直接和主句连接起来。状语从句根据它表达的意思不同，可分为时间 地点 原因 目的 结果 条件 方式 比较 让步等九类。一 时间状语从句。时间状语从句是表示时间关系的从句。...
高考英语语法专题复习状语从句讲义
2012届高考英语语法专题复习状语从句讲义。学习目标 1.掌握由when,while,as,as soon as等引导的时间状语从句。2.掌握由if,unless等引导的条件状语从句。3.掌握由because,as,since,for等引导的原因状语从句。4.掌握由so that,so that,s...
高考英语语法专题复习状语从句讲义
2012届高考英语语法专题复习状语从句讲义。学习目标 1.掌握由when,while,as,as soon as等引导的时间状语从句。2.掌握由if,unless等引导的条件状语从句。3.掌握由because,as,since,for等引导的原因状语从句。4.掌握由so that,so that,s...