目的状语从句结果状语从句条件状语从句引导词
目的状语从句
表示目的状语的从句可以由that, so that, in order that, lest, for fear that, in case等词引导，例如：
You must speak louder so that /in order that you can be heard by all.
你必须大声说话以便能被大家听到。

结果状语从句
结果状语从句常由so… that 或 such…that引导，掌握这两个句型，首先要了解so和such与其后的词的搭配规律。such 是形容词，修饰名词或名词词组，so 是副词，只能修饰形容词或副词。 so 还可与表示数量的形容词many, few, much, little连用，形成固定搭配。例如：
so foolish  such a fool    so many people  such a lot of people   
注意：
① so many 已成固定搭配，a lot of 虽相当于 many，但 a lot of 为名词性的，只能用such搭配。
② so…that与 such…that之间的转换既为 so与such之间的转换。
The boy is so young that he can't go to school.\ He is such a young boy that he can't go to school.     这个男孩太小了，不能去上学。
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条件状语从句
连接词主要有 if, unless, as/so long as, on condition that 等。if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。
注意：unless = if not. 
Let's go out for a walk unless you are too tired. \ If you are not too tied, let's go out for a walk.        如果你不太就累了，我们出去散步吧。  

“The Book That Can't Wait” is a great new idea that seeks to strengthen bonds between first time writers and their readers by getting their books read quickly.
Argentinean independent publishers Eterna Cadencia are publishing a collection of short stories by new South American authors using special ink that slowly disappears once it come s  in contact with sun and air，completely vanishing within 2 months after the book has been opened.This makes for an interesting approach to motivating book buyers to read books more quickly，giving first­time authors the attention they need to survive.
“The Book That Can't Wait” tackles an important problem for new authors: How to get readers.The creative independent publishers teamed up with DRAFTFCB in the city of Buenos Aires to develop this project.
“Books are very patient objects. We buy them，and then they wait for us to read them.Days，months，even years.That's OK for books，but not for new authors.If people don't read their first book，they'll never make it to a second，” says the project coordinator Tito SantanA．
That's why Etema Cadencia，which also runs its  own bookstore，has decided to create something different to launch its new authors into the market.It presented its first “The Book That Can't Wait” for t he critics and the press last mo nth.The invention is a success.Hundreds of people came to the bookstore to pick up a copy.To help spread the word，they gave away the first edition to customers for free.The very same day it was released，the publishing house claimed that it received thousands of requests for more copies of the book.So it will print a new edition later this month to satisfy the demand.And the best result? This time they have the guarantee that their new authors will b e read.The company plans to use the book as a platform for other titles，because they believe there is a lot of literature out there that doesn't deserve to wait on the shelf.And these books won't wait at all.
1．The main purpose of publishing “The Book That Can't Wait” is to________.
A．sell more books B．make it fun to read
C．invent a new kind of book D．get new authors' book s read quickly
2．The DRAFTFCB mentioned in paragraph 3 is most probably________.
A．an organization involved in the project B．a new South American author
C．an independent bookstore D．an area of Buenos Aires
3．What can we learn from the passage?
A．Light and air can make the books disappear within two months.
B．The approach has only been applied to works of some new authors.
C．Books printed using the new technology have been best­sellers.
D．The company will publish all its books in the future using the new ink.

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