精選：九年級英語語法狀語從句深度解析

19.4 目的狀語從句

表示目的狀語的從句可以由that, so that, in order that, lest, for fear that, in case等詞引導，例如：

You must speak louder so that /in order that you can be heard by all.

He wrote the name down for fear that(lest) he should forget it.

Better take more clothes in case the weather is cold.

19.5 結果狀語從句

　結果狀語從句常由so… that 或 such…that引導，掌握這兩個句型，首先要了解so 和 such與其後的詞的搭配規律。

比較：so和 such

　其規律由so與such的不同詞性決定。such 是形容詞，修飾名詞或名詞詞組，so 是副詞，只能修飾形容詞或副詞。 so 還可與表示數量的形容詞many, few, much, little連用，形成固定搭配。

　so foolish such a fool

　so nice a flower such a nice flower

　so many / few flowers such nice flowers

　so many people such a lot of people

（ so many 已成固定搭配，a lot of 雖相當於 many，但 a lot of 為名詞性的，只能用such搭配。）

so…that與such…that之間的轉換既為 so與such之間的轉換。

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

19.6 條件狀語從句

連接詞主要有 if, unless, as/so long as, on condition that 等。.

if 引導的條件句有真實條件句和非真實條件句兩種。非真實條件句已在虛擬語氣中闡述。

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.

典型例題

You will be late ___ you leave immediately.　

A. unless B. until C. if D. or

　答案A。 句意：除非你立即走，否則你就回遲到的。可轉化為 If you dong leave immediately, you will be late.　B、D句意不對，or錶轉折，句子如為 You leave immediately or you will be late.

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