知识库
先学知识点，再做题检验。当前：状语从句
01. 名词 (8个)
02. 冠词 (5个)
03. 代词 (4个)
04. 形容词与副词 (6个)
05. 介词 (6个)
06. 连词 (4个)
07. 动词时态 (19个)
08. 被动语态 (7个)
09. 情态动词 (4个)
10. 非谓语动词 (8个)
11. 定语从句 (7个)
12. 名词性从句 (8个)
13. 状语从句 (7个)
14. 虚拟语气 (5个)
15. 特殊句式 (8个)
16. 数词 (6个)
17. 直接引语与间接引语 (4个)
18. 句子成分与结构 (7个)
19. 构词法 (4个)
98. 张俊杰英语全语法体系（综合参考） (31个)
99. 英语全语法之简单原则 (12个)
时间与条件状语从句
时间与条件状语从句
重点 难度 2/3
时间连词
when（当...时）, while（在...期间/然而）
before, after, until（直到...）
as soon as（一...就...）
条件连词
if（如果）, unless（除非=if not）
as long as（只要）
provided that（假如）
主将从现（常考）
从句用一般现在时表将来：
If it rains tomorrow, we will stay.
时间状语从句的特殊连词
难度 2/3
before 的特殊翻译
* 还没来得及...就：
He left before I could say goodbye.
* 过了...才：
It was a long time before I fell asleep.
* 在...之前（就）：
I had waited for two hours before he came.
since 从句的用法
* since + 过去时/现在完成时：
It is three years since I last saw you.
It has been three years since I last saw you.
when 的三种用法
1.当...时：When I was young, I lived in Beijing.
2.= while 对比：Why are you here when you should be at work?
3.= 这时/突然（常与过去进行时连用）：
I was about to leave when the phone rang.
I had hardly finished when he came in.
the moment / the minute / the instant / immediately = as soon as
* The moment I saw her, I knew she was the one.
* I'll call you immediately I arrive.
* The instant he heard the news, he burst into tears.
every time / each time / next time 引导时间状语从句
* Every time I see him, he looks busy.
* Next time you come, bring your sister.
when/while/as 的详细对比
难度 2/3
when / while / as 的用法对比（常考）
when（最通用）
1.时间点或时间段均可：
When I arrived, she was sleeping.（时间点）
When I was young, I lived in Beijing.（时间段）
2.表示"这时（突然）"——常考句型
I was about to leave when the phone rang.
We were having dinner when the lights went out.
He had hardly finished when someone interrupted.
3.对比 = while/whereas：
How can he succeed when he won't even try?
while（时间段/对比）
1.期间（后接进行时或状态动词）：
While I was reading, he was watching TV.
While there is life, there is hope.
2.对比/转折（常考）：
He likes coffee, while I prefer tea.
3.表示"虽然"（放句首）：
While I respect him, I don't agree with him.
as（同时/原因）
1.两个动作同时发生：
As she sang, tears ran down her cheeks.
He smiled as he passed the exam.
2.随着/渐变：
As time goes by, I miss you more.
As you get older, you become wiser.
3.因为（原因）：
As it's raining, let's stay home.
简便记忆
* when：点或段 + 打断
* while：段 + 对比
* as：同时 + 渐变
原因目的与让步状语从句
as 引导的倒装让步与状语从句对比
难度 2/3
as / though 引导的倒装让步从句（重要）
* 形容词提前：Tired as he was, he kept working.
(= Although he was tired...)
* 名词提前（无冠词）：Child as he is, he knows a lot.
(= Although he is a child...)
* 副词提前：Hard as he tried, he couldn't open the door.
* 动词原形提前：Try as he might, he couldn't do it.
in case / for fear that / lest
* in case（以防/万一）：
Take an umbrella in case it rains.
* for fear that（唯恐...）：
He whispered for fear that he might be heard.
* lest（免得，正式）：
He ran away lest he should be caught.
so that / in order that 目的状语从句
* so that（以便，为了）：
I got up early so that I could catch the train.
* in order that（为了，更正式）：
He left early in order that he might arrive on time.
* 目的状语从句常用can/could/may/might
whereas / while 对比状语从句
* He likes coffee, whereas/while I prefer tea.
* Some people waste food while others go hungry.
so...that / such...that 详尽对比
难度 2/3
so...that vs such...that 结构对比
so + 形容词/副词 + that
* so + adj：He is so tired that he fell asleep.
* so + adv：He ran so fast that no one could catch him.
* so + many/few + 复数名词 + that：
There were so many people that I couldn't move.
* so + much/little + 不可数名词 + that：
He had so much work to do that he stayed up.
* so + adj + a/an + 单数名词 + that：
He is so kind a man that everyone likes him.
such + 名词 + that
* such + a/an + adj + 单数名词 + that：
He is such a kind man that everyone likes him.
(= He is so kind a man that...)
* such + adj + 复数名词 + that：
They are such good students that the teacher likes them all.
* such + adj + 不可数名词 + that：
It was such beautiful weather that we went to the beach.
* such + 名词 + that（无形容词）：
He is such a fool that no one trusts him.
so that 目的/结果
* so that = in order that：以便
I got up early so that I could catch the train.
* so + that（so放句首表强调）：
So loudly did he speak that everyone could hear.
so表示"这样/如此"
* I think so.
* If so, please let me know.
* He is a teacher, and so is his wife.
because / since / as / for 对比
难度 2/3
because / since / as / for 的区别（常考）
because —— 语气最强，表直接原因
* 回答why提问：—Why are you late? —Because I missed the bus.
* 可放在句首或句中，可被just修饰：
I went home just because I was tired.
* because 不能与 so 同时用：
✗ Because I was tired, so I went home.
since —— 既然（已知理由）
* 听话人已知的理由/原因，语气较弱：
Since you're here, let's get started.
Since everyone is ready, we can leave now.
* 通常放在句首
as —— 因为（语气最弱）
* 双方都知的原因，常放在句首：
As it's rainy, we'd better stay home.
As she was busy, I didn't disturb her.
for —— 并列连词（补充说明/推测）
* for 不表示直接因果，而是补充说明或根据现有信息做推断：
He must be tired, for he went to bed early.（推测原因）
The ground is wet, for it rained last night.（补充事实）
* for 不能放在句首，用逗号隔开：
✗ For it rained, the ground is wet.
because of + 名词/代词（介词短语）
* The game was canceled because of the rain.
* He succeeded because of his hard work.
原因/目的/结果/让步
重点 难度 2/3
原因
because（最强）, since（既然）, as（因为）
目的
so that（以便）, in order that（为了）
结果
so+形/副+that：so tired that...
such+名+that：such a kind man that...
让步
although/though（虽然）, even if（即使）
whatever/no matter what（无论）
注意
* because 和 so 不能同时用
* although 和 but 不能同时用