一、so... that...句型中的so是副詞，常常用來修飾形容詞或副詞，意思是“如此……以致于……”，引導結果狀語從句，常用句型為：主語+謂語+so+adj/adv+that從句。例如：
1. he is so young that she can't look after herself.
2. The boy ran so fast that I couldn't catch him.
3. He was so angry that he couldn't say a word.
二、在“such... that...”句型中，such修飾名詞，意思也是“如此……以致于……”，引導結果狀語從句，其句型結構可分以下三種：
1. such＋a(an)＋adj.＋單數(shù)可數(shù)名詞＋that從句
He is such a clever boy that everybody likes him.
He was such an honest man that he was praised by the teacher.
2. such＋adj.＋復數(shù)可數(shù)名詞＋that從句
They are such interesting novels that I want to read them once again.
3. such＋adj.＋不可數(shù)名詞＋that從句
He has made such great progress that the teachers are pleased with him.
【注意】如果such后邊的名詞前由many、much、few、little等詞所修飾的話，則不用such而用so。例如：
He had so many falls that he was black and blue all over.
He had so little education that he was unfit for this job.
三、so that 意思是"以便/為了……"，引導目的狀語從句。例如：
1. I got up early so that I could catch the early bus.
2. Please open the window so that we can breathe fresh air.
3. You must go now so that you won't be late.
四、以“so...that”引導的結果狀語從句可以轉換成不定式的簡單句，即可轉換為“...enough to...”或“...too...to”句型，但這種轉換必須符合下列條件：
1. 當主句和從句的主語一致，且that從句是肯定句時，可用“enough to do sth.”來轉換。例如：
He was so clever that he can understand what I siad. →
He was clever enough to understand what I siad.
2. 當主句和從句的主語不一致，且that從句是肯定句時，可以用“enough for sb. to do sth.”來替換，但須注意不定式的賓語要省略。例如：
The question is so easy that I can work it out. →
The question is easy enough for me to work out.
3. 當主句和從句的主語一致，且that從句是否定句時，可以用“too...to”來替換。例如：
The girl is so young that she can't dress herself. →
The girl is too young to dress herself.
4. 當主句和從句的主語不一致，且that從句是否定時，如果要用“too...to...”替換“so...that...”，則用介詞for引出動詞不定式的邏輯主語，可以用“too...for sb. to do sth.”來替換，注意不定式的賓語要省略。
The bag is so heavy that she can't move it. →
The bag is too heavy for her to move.
1. he is so young that she can't look after herself.
2. The boy ran so fast that I couldn't catch him.
3. He was so angry that he couldn't say a word.
二、在“such... that...”句型中，such修飾名詞，意思也是“如此……以致于……”，引導結果狀語從句，其句型結構可分以下三種：
1. such＋a(an)＋adj.＋單數(shù)可數(shù)名詞＋that從句
He is such a clever boy that everybody likes him.
He was such an honest man that he was praised by the teacher.
2. such＋adj.＋復數(shù)可數(shù)名詞＋that從句
They are such interesting novels that I want to read them once again.
3. such＋adj.＋不可數(shù)名詞＋that從句
He has made such great progress that the teachers are pleased with him.
【注意】如果such后邊的名詞前由many、much、few、little等詞所修飾的話，則不用such而用so。例如：
He had so many falls that he was black and blue all over.
He had so little education that he was unfit for this job.
三、so that 意思是"以便/為了……"，引導目的狀語從句。例如：
1. I got up early so that I could catch the early bus.
2. Please open the window so that we can breathe fresh air.
3. You must go now so that you won't be late.
四、以“so...that”引導的結果狀語從句可以轉換成不定式的簡單句，即可轉換為“...enough to...”或“...too...to”句型，但這種轉換必須符合下列條件：
1. 當主句和從句的主語一致，且that從句是肯定句時，可用“enough to do sth.”來轉換。例如：
He was so clever that he can understand what I siad. →
He was clever enough to understand what I siad.
2. 當主句和從句的主語不一致，且that從句是肯定句時，可以用“enough for sb. to do sth.”來替換，但須注意不定式的賓語要省略。例如：
The question is so easy that I can work it out. →
The question is easy enough for me to work out.
3. 當主句和從句的主語一致，且that從句是否定句時，可以用“too...to”來替換。例如：
The girl is so young that she can't dress herself. →
The girl is too young to dress herself.
4. 當主句和從句的主語不一致，且that從句是否定時，如果要用“too...to...”替換“so...that...”，則用介詞for引出動詞不定式的邏輯主語，可以用“too...for sb. to do sth.”來替換，注意不定式的賓語要省略。
The bag is so heavy that she can't move it. →
The bag is too heavy for her to move.