句型轉換這一題型是先給出一個句子，然後再給出一個包含幾個空白處的句子，要求根據括號內的具體要求在第二句的空白處填入適當的詞來完成。它有完全的句式轉換和句子中某一部分或幾部分的轉換。該題型主要考查同學們的語言基礎知識及句子結構的構成、變化、運用等。其特點是規律性強、靈活性小，旨在考查考生用不同的句型結構來表達相同、相近或相反的語意的能力，訓練靈活運用語言的技巧。
從題型上看，句型轉換可分為兩大類：
一是按要求改寫句子。即按照指定要求將原句改寫成其他形式的句子，如肯定句改為否定句，陳述句改為一般疑問句、特殊疑問句、反意疑問句、感嘆句，對劃線部分提問等。
另一類是同義句、近義句的轉換，即要求用不同的句型，不同的語言手段表達相同的思想。
按要求改寫句子
按要求改寫句子的具體分類如下：
一、肯定句改為否定句
1. 改變謂語結構
在系動詞be, become, feel, smell等，助動詞be, have, do 等以及情態動詞can, may, should等後加not。如果句子的謂語中不是以上這些詞，而是行為動詞，則相應地將動詞的原形，第三人稱單數或過去式變為否定形式。如：
He has seen the film before.
He hasnt seen the film before.
He will write the book in two months.
He wont write the book in two months.
He does his homework in the evening.
He doesnt do his homework in the evening.
2. 用含否定意義的詞（如never, nothing, nobody, none, neither, little, few等）。
（1）always/ever never, and or。如：
He was always late for school last term.
He was never late for school last term.
（2）toonoteither, alreadynotyet。如：
He goes to school by bike, too.
He doesnt go to school by bike, either.
（3）allnone, bothneither, bothand neithernor，此時，謂語動詞仍用肯定形式，但當neither作主語，謂語動詞用單數形式；neither nor連接兩個主語時，謂語動詞應和靠近它的主語保持一致。如：
He knows all of the workers here.
He knows none of the workers here.
Both of the twins are from England.
Neither of the twins is from England.
3. 當think, believe, suppose等動詞後面跟賓語從句時，通常用否定主句的謂語動詞來達到否定從句謂語動詞的目的。如：
I think they can come tonight.
I dont think they can come tonight.
二、陳述句改為疑問句
1. 一般疑問句。
Sam often does his homework in the evening.
Does Sam do his homework in the evening?
2. 特殊疑問句。
I got there the day before yesterday.
When did you get there?
3. 反意疑問句。
Mary doesnt work hard.
Mary doesnt work hard, does she?
注意：Lets和Let us祈使句的附加問句分別為shall we 和will you。如：
Lets go out for a walk, shall we?
三、陳述句改為感嘆句
The film is very interesting.
How interesting the film is!
Its a beautiful flower.
What a beautiful flower it is!
一般情況下，what引導的感嘆句和how引導的感嘆句可相互轉換。如：
How nice the watch is! What a nice watch it is!
四、對劃線部分提問
就劃線部分提問，是用一個合適的疑問詞去替代句中的某一成分，使之成為一個特殊問句。其方法主要是：先依據語意選擇相應的疑問詞和疑問句語序，句末改用問號。這時我們要注意以下幾點：
（1）選擇恰當的疑問詞。
（2）對主語或主語的定語提問時，用陳述句語序。對定語提問時，所修飾的名詞應放在疑問詞後。
（3）對其它成分提問，用疑問詞＋一般疑問句語序。如：
My grandpa has been in Shanxi for ten years.
Who has been in Shanxi for ten years?
Lilys dog has lost.
Whose dog has lost?
Emma bought one dictionary yesterday.
How many dictionaries did Emma buy yesterday?
句型轉換設題廣，部分試題難度較大，這就要求同學們有紮實的語言基本功和熟練的解題技巧。
對於按要求改寫句子的試題：首先應注意要求的內容；二是要注意選詞的準確；三是要注意各種句型的特殊點；四是要注意大小寫和拼寫的正確。如：
1. The maths problem is too difficult for him to work out. （改為復合句）
The maths problem is ______ difficult _____ he cant work it out.
2. The surfers both won first prize in the city surfing competition. （改為否定句）
_____ ______ the surfers won first prize in the city surfing competition.
3. I think the fastest way to travel is by plane. （改為特殊疑問句）
____ do you think the fastest way to travel ______?
4. Miss Li showed us a picture of the feathered dinosaur. （改為被動語態）
We _____ ______ a picture of the feathered dinosaur by Miss Li.
答案與簡析：
1. tooto（太而不能）＝so that not （如此以致不），所以，應該填so, that。
2. 從轉換後的句式中沒有明確的否定詞not可知不能用助動詞加not的形式來完成。再根據both的反義詞是neither，主語又是the surfers，因此應填Neither of。
3. 本題實際上是對by plane提問，改換後的句子只是缺少了is by plane，因此，該將by plane改為what，後一個空用is。
4. 由showed確定要用一般過去時的被動語態，故填were shown/showed。
從題型上看，句型轉換可分為兩大類：
一是按要求改寫句子。即按照指定要求將原句改寫成其他形式的句子，如肯定句改為否定句，陳述句改為一般疑問句、特殊疑問句、反意疑問句、感嘆句，對劃線部分提問等。
另一類是同義句、近義句的轉換，即要求用不同的句型，不同的語言手段表達相同的思想。
按要求改寫句子
按要求改寫句子的具體分類如下：
一、肯定句改為否定句
1. 改變謂語結構
在系動詞be, become, feel, smell等，助動詞be, have, do 等以及情態動詞can, may, should等後加not。如果句子的謂語中不是以上這些詞，而是行為動詞，則相應地將動詞的原形，第三人稱單數或過去式變為否定形式。如：
He has seen the film before.
He hasnt seen the film before.
He will write the book in two months.
He wont write the book in two months.
He does his homework in the evening.
He doesnt do his homework in the evening.
2. 用含否定意義的詞（如never, nothing, nobody, none, neither, little, few等）。
（1）always/ever never, and or。如：
He was always late for school last term.
He was never late for school last term.
（2）toonoteither, alreadynotyet。如：
He goes to school by bike, too.
He doesnt go to school by bike, either.
（3）allnone, bothneither, bothand neithernor，此時，謂語動詞仍用肯定形式，但當neither作主語，謂語動詞用單數形式；neither nor連接兩個主語時，謂語動詞應和靠近它的主語保持一致。如：
He knows all of the workers here.
He knows none of the workers here.
Both of the twins are from England.
Neither of the twins is from England.
3. 當think, believe, suppose等動詞後面跟賓語從句時，通常用否定主句的謂語動詞來達到否定從句謂語動詞的目的。如：
I think they can come tonight.
I dont think they can come tonight.
二、陳述句改為疑問句
1. 一般疑問句。
Sam often does his homework in the evening.
Does Sam do his homework in the evening?
2. 特殊疑問句。
I got there the day before yesterday.
When did you get there?
3. 反意疑問句。
Mary doesnt work hard.
Mary doesnt work hard, does she?
注意：Lets和Let us祈使句的附加問句分別為shall we 和will you。如：
Lets go out for a walk, shall we?
三、陳述句改為感嘆句
The film is very interesting.
How interesting the film is!
Its a beautiful flower.
What a beautiful flower it is!
一般情況下，what引導的感嘆句和how引導的感嘆句可相互轉換。如：
How nice the watch is! What a nice watch it is!
四、對劃線部分提問
就劃線部分提問，是用一個合適的疑問詞去替代句中的某一成分，使之成為一個特殊問句。其方法主要是：先依據語意選擇相應的疑問詞和疑問句語序，句末改用問號。這時我們要注意以下幾點：
（1）選擇恰當的疑問詞。
（2）對主語或主語的定語提問時，用陳述句語序。對定語提問時，所修飾的名詞應放在疑問詞後。
（3）對其它成分提問，用疑問詞＋一般疑問句語序。如：
My grandpa has been in Shanxi for ten years.
Who has been in Shanxi for ten years?
Lilys dog has lost.
Whose dog has lost?
Emma bought one dictionary yesterday.
How many dictionaries did Emma buy yesterday?
句型轉換設題廣，部分試題難度較大，這就要求同學們有紮實的語言基本功和熟練的解題技巧。
對於按要求改寫句子的試題：首先應注意要求的內容；二是要注意選詞的準確；三是要注意各種句型的特殊點；四是要注意大小寫和拼寫的正確。如：
1. The maths problem is too difficult for him to work out. （改為復合句）
The maths problem is ______ difficult _____ he cant work it out.
2. The surfers both won first prize in the city surfing competition. （改為否定句）
_____ ______ the surfers won first prize in the city surfing competition.
3. I think the fastest way to travel is by plane. （改為特殊疑問句）
____ do you think the fastest way to travel ______?
4. Miss Li showed us a picture of the feathered dinosaur. （改為被動語態）
We _____ ______ a picture of the feathered dinosaur by Miss Li.
答案與簡析：
1. tooto（太而不能）＝so that not （如此以致不），所以，應該填so, that。
2. 從轉換後的句式中沒有明確的否定詞not可知不能用助動詞加not的形式來完成。再根據both的反義詞是neither，主語又是the surfers，因此應填Neither of。
3. 本題實際上是對by plane提問，改換後的句子只是缺少了is by plane，因此，該將by plane改為what，後一個空用is。
4. 由showed確定要用一般過去時的被動語態，故填were shown/showed。
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