高中英语语法 条件状语从句

（14崇明一模 ）在上下班高峰时间，倘若你不想陷入交 通堵塞，何不尝试乘坐地铁？(try) If you don’t want to be caught in the traffic jam in rush hours, why don’t you try taking the subway?
（14徐汇一模）如果双方在这些事务上能达成共识，就有可能 在新的领域进一步合作。（If...） If both the parties can agree on these issues, they are likely to further cooperate （have further cooperation）in the new field.
句型转换： If you give me somewhere to stand, I will move the earth. Give me somewhere to stand, and I will move the earth. Give me somewhere to stand, or I won’t move the earth. Given somewhere to stand, I will move the earth.
1.If真实条件句 2.If非真实条件句 3.其他引导词
考点可结合题型： 语法填空题（1-3空） 翻译与写作 长难句分析
状语从句 14一模 14二模 15一模 15二模 总空格数
时间 6 10 3 5 24
让步 5 5 6 4 20
条件 4 5 6 4 19
原因 7 1 1 2 11
目的 2 1 0 2 5


If she’s travelling abroad on business, she always phones me every evening. Shall we go out if the weather’s good?
If

b. 句型


If you work harder, you will succeed.
If we take steps to deal with this problem, we can avoid a severe water shortage later on. Only放在句首，句子要用部分倒装。 Only if we take steps to deal with this problem can we avoid a severe water shortage later on.
条件状语从句，多置于句首，等于if it happens that。 In case I forget, please remind me of my promise. 如果我忘了，请提醒我所做的承诺。（只有我忘了的情 况下才提醒我。）
“万一，如果”
（14闸北二模）万一家具在大火中毁掉了，保险公 司是否会支付所有的损失？（in case） Will the insurance company pay for all the damages in case the furniture is destroyed in the fire？
Providing/provided (that), supposing/suppose (that), given (that)
wk.baidu.com

如果，只要，假如
Given that they are inexperienced, they've done a good job. 考虑到他们缺乏经验，他们的工作已做得很好了。 Provided/Providing (that) we invite him, he would surely come to dinner. 假如我们邀请他的话，他肯定会来吃饭的。
选择题：
Start out right away, _____you’ll C miss the first train. A.and B. but C. or D. while
B _____, and I’ll get the work finished.(06重庆) A. Have one more hour B. One more hour C. Given one more hour D. If I have one more hour
so/as long as , on condition that

表示只要，条件是…… As/So long as we don't lose heart, we'll find a way to overcome the difficulty.

You may use the room on condition that/ so long as you clean it afterwards.
条件状语从句
明桑桑
状 语 从 句

时间状语从句 地点状语从句 条件状语从句 目的状语从句 结果状语从句 原因状语从句 让步状语从句 方式状语从句 比较状语从句
1. 条件状语从句的 引导词 2. 条件状语从句的 时态问题 3. 条件状语从句的 省略问题（分词 做条件状语）
unless

unless=if … not… 如果不，除非 (14虹口二模)如果不能独立找出提高学习效率的方法，你就很难取 得令人满意的成绩。(unless) It is very difficult for you to gain satisfactory achievements unless you find out the method of improving the learning efficiency by yourself.


only if 只有 等于only on condition that，从句用陈述语气。 Only if you heat ice does it turn to water.
只有当你给冰加热，它才会变成水。
If only I knew! 要是我知道该多好。
选择题：
D _____we take steps to deal with this problem can we avoid a severe water shortage later on. A. If only B. As long as C. When only D. Only if
Have an aim in your life, or your energies will be wasted. If you have an aim in your life, your energies won’t be wasted. If you don’t have an aim in your life, your energies will be wasted.
翻译与写作：
如果……我将不胜感激。 I’d appreciate it if…… 翻译： 如果您能帮助我得到票的话，我会非常感激。 I’d appreciate it if you could help me get a ticket. If you could help me get a ticket, I'd appreciate it. 写作： 主题：给学校校报编辑、社区、某项活动提建议。结尾句可用。 如果你能考虑我的建议，我将不胜感激。 I would appreciate it if you could take my suggestions into consideration.



a. 时态 主句一般将来时，从句一般现在时(主将从现)
If the museum charges for entry, a lot of people won’t be able to visit it. If your dog is depressed, he probably ____ more exercises. A. will need B. needed C. need D. needs 主句用现在时：表示此事任何时候都是可能的,尤其是现在。 主句用将来时：表示此事将来的可能性。
THANKS
翻译与写作：
如果……该怎么办？ What if……
(15虹口二模)如果你忘记通知他面试时间了该怎么办？ What if you forget to inform him of the time for the interview?
If

d. if only vs. only if if only 但愿，要是……就好了 表示一个不可能实现愿望，要用虚拟语气。
Work harder, and you will succeed. Work harder, or you won’t succeed. Working harder, you will succeed. 可与if条件状语从句进行转换的句型：
1. 祈使句/名词短语，and/or+简单句 2. 分词，主句（分词做条件状语）


Suppose/Supposing we can't get enough food, what shall we do? 假设我们弄不到足够的食物，那我们怎幺办？（仅用于疑问句）


判断句子逻辑关系为条件
条件状语从句的引导词： 1空：if , unless 2空：in case, providing/provided (that), supposing/suppose (that), given (that) 3空：so long as, as long as, on condition that


unless能作为介词使用，相当于except。 Nothing will come out of it unless disaster. 这种事除了引起灾祸之外不会有什么结果。
in case


in case 目的状语从句，多置于句中，为将来的情况做必要的防备 I’ll bring an umbrella in case it rains. “以防” 我会带把雨伞去，（目的是）以防会下雨。


After only six months he was due for a raise if this assessment was satisfactory.(14黄浦一 ____ 模)

You can fit self care into your weekly routine ____ ____ ____ as/so long as you prioritize(优先考虑). (14杨浦 一模) He did so just to give her those extra few in case precious moments of life, ___ ___ I was careless enough to step on her.(14闵行二模)
方式 0 1 1 0 2
结果 1 0 0 0 1
比较 0 1 0 0 1
状语从句
时间 让步 条件 原因
语法题考频分析
If
If 真实条件句（陈述语气） If you read the book, you will be interested in it.

非真实条件句（虚拟语气） If I were you, I would take his advice.