最最基础的高中入门级英语语法--状语从句
状语从句共分为九大类型，分别是：
⒈时间状语从句
⒉条件状语从句
⒊让步状语从句
⒋原因状语从句
⒌地点状语从句
⒍方式状语从句
⒎结果状语从句
⒏目的状语从句
⒐比较状语从句
其中前四种从句类型考到的频率相对更高，所以今天就只说前四种啦
一、时间状语从句
常考连词有：
⒈when当……
When I walkedonthe road，I saw a beggar begging by the roadside.
注意：when还有以下的其他用法，翻译成“突然……”
sb be doing sth when…正在做某事，突然…--The students were discussing the stars in the classroom when the teachercame in .
sb be to about do sth when…刚要做某事，突然…--The students were about discuss the stars in the classroom when the thecher came in.
⒉while在…期间
与when相比，一般从句谓语动词常用延续性动词，也就是表明一段时间内都在做的事
While we were talking, the phone rang.
While we were watching TV, it began to rain outside.
⒊since自从
两种主要用法：①现在完成时+since+一般过去时--I have been renting a house since I moved out of my house.
②现在完成时+since+现在完成时--He has never bothered me since I have started working in this company.
⒋as随着；一边…一边…
从句谓语动词用延续性动词
As I grow older, I can understand my parents more and more.
⒌until直到
⑴延续性动词+until+短暂动词或时间点
Stay at home until we come back.
⑵短暂性动词+until+短暂动词或时间点
You cant open the door until we get home.
-注意-
高考对not until四种句式的考查
⑴正常结构I didnt relax until I saw my home.
⑵强调结构It was not until I saw my home that I relaxed.
⑶倒装结构Not until I saw my home,did I relaxed.
⑷放在句首Until I saw my home,I didnt even relax.
⒍as soon as;immediately;the moment一…就…
要特别注意the moment和at the moment的区别，at the moment是此刻的意思
Youd better pack your things as soon as possible to catch the trian.
The lights went out immediately I entered the room.
Li Hua always left his friends the moment they got into trouble.
⒎by the time在…之前
强调一个动作在另一个动作发生之前
两种用法：
①主句用had done+by the time+从句用一般过去时--
Li Hua has reached the finish lineby the time Xiaomei just started running .
②主句用will have done+by the time+从句用一般现在时
We will have already reached our destination by the time they come.
二、条件状语从句
常考连词为：
⒈if如果
If winter comes, can spring be far behind?
⒉unless如果不；除非
祈使句+or/or else=until从句+主句
Give me my money back, or/or else Ill tell your parents.
Unless you give me my money back, Ill tell your parents.
⒊as/so long as只要
As/Solong as you work hard enough, luck will watch you.
⒋in case万一;在…情况下（未发生）
In case I dont get up, please be sure to wake me up.
⒌on condition that 只要；在…条件下
I can tell you the truth, on condition that you must keep it as a secret.
三、让步状语从句
⒈though;although虽然；尽管
Although that is difficult to achieve, I still want to give it a try.
⒉even if;even though即使
Even if youre right, you still cant hurt anyone.
though;although;even though;even if均不可以与but连用，但可以与still和yet连用
⒊in spite of;despite尽管；不顾
二者均加名词性结构，不加句子
Despite what she achieved in study,no one wanted to play with her.
To love you in spite of any consequences.
⒋no matter…;-ever无论…
No matter what happens, I will stay with you.
Whatever happens, I will stay with you.
no matter what/how/where…=whatever/however/wherever…
⒌as虽然，尽管
as引导让步状语从句时，必须使用倒装，将所强调的的名词、形容词、副词、分词等提前，加as，再加上剩余部分，当被强调部分为名词或者最高级时，冠词需要删掉
He is the youngest classmate in the class, but he studies hardest.
=Youngest as he is in the class,he studies hardest.
倒装：…as sb.+did/be动词/n./最高级+sth.…
比如最简单的倒装句：Here he comes./Here you are.
四、原因状语从句
常考连词为：
⒈because因为
只有because可以回答why的提问；只有because可以被only,just或perhaps等词修饰
It was only because Toms uncles family was coming to visit that Toms wife set up the stove to keep warm and took out the best tableware to entertain them.
⒉since/as因为
表示人熟知的事实，不需要过多解释或强调，可以翻译成“既然”
Since there is no rain this afternoon, why not climb the mountain?
As you have already got the admission letter from a famous university, you neednt be too nervous.
⒊for因为
for表示推断的理由，是对前面观点的解释说明
Tom must not have got up yet,for the light in his room is still off.
小小的福利：这个资料呢是我在各个公众号上搜集的，还有一部分是在淘宝上买的，如果需要可以评论，前提是先要关注（其实不关注也会给的啦，嘿嘿）
大家如果有什么不懂的知识点可以评论或私信，就当是帮我找找素材啦，有时候我真的不知道下一期该发什么
总之，高考加油！中考加油！
Where there is a will,there is a way.
这里歆屿，与你相遇很幸运
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