句型轉(zhuǎn)換這一題型是先給出一個句子，然后再給出一個包含幾個空白處的句子，要求根據(jù)括號內(nèi)的具體要求在第二句的空白處填入適當(dāng)?shù)脑~來完成。它有完全的句式轉(zhuǎn)換和句子中某一部分或幾部分的轉(zhuǎn)換。該題型主要考查同學(xué)們的語言基礎(chǔ)知識及句子結(jié)構(gòu)的構(gòu)成、變化、運用等。其特點是規(guī)律性強、靈活性小，旨在考查考生用不同的句型結(jié)構(gòu)來表達相同、相近或相反的語意的能力，訓(xùn)練靈活運用語言的技巧。

　　從題型上看，句型轉(zhuǎn)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(zhuǎn)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(jié)構(gòu)
　　在系動詞be, become, feel, smell等，助動詞be, have, do 等以及情態(tài)動詞can, may, should等后加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(yīng)地將動詞的原形，第三人稱單數(shù)或過去式變?yōu)榉穸ㄐ问?。如?br>　　He has seen the film before.
　　→He hasn't seen the film before.
　　He will write the book in two months.
　　→He won't write the book in two months.
　　He does his homework in the evening.
　　→He doesn't do his homework in the evening.

　　2. 用含否定意義的詞（如never, nothing, nobody, none, neither, little, few等）。
　?。?）always/ever →never, and →or。如：
　　He was always late for school last term.
　　→He was never late for school last term.
　?。?）too→not…either, already→not…yet。如：
　　He goes to school by bike, too.
　　→He doesn't go to school by bike, either.
　?。?）all→none, both→neither, both…and →neither…nor，此時，謂語動詞仍用肯定形式，但當(dāng)neither作主語，謂語動詞用單數(shù)形式；"neither …nor…"連接兩個主語時，謂語動詞應(yīng)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(dāng)think, believe, suppose等動詞后面跟賓語從句時，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 don't 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 doesn't work hard.
　　→Mary doesn't work hard, does she?
　　注意：Let's和Let us祈使句的附加問句分別為shall we 和will you。如：
　　Let"s 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!
　　It"s a beautiful flower.
　　→What a beautiful flower it is!
　　一般情況下，what引導(dǎo)的感嘆句和how引導(dǎo)的感嘆句可相互轉(zhuǎn)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(jù)語意選擇相應(yīng)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(dāng)?shù)囊蓡栐~。
　?。?）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(yīng)放在疑問詞后。
　?。?）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?
　　Lily's dog has lost.
　　→Whose dog has lost?
　　Emma bought one dictionary yesterday.
　　→How many dictionaries did Emma buy yesterday?

　　句型轉(zhuǎn)換設(shè)題廣，部分試題難度較大，這就要求同學(xué)們有扎實的語言基本功和熟練的解題技巧。
　　對于按要求改寫句子的試題：首先應(yīng)注意"要求"的內(nèi)容；二是要注意選詞的準(zhǔn)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(fù)合句）
　　The maths problem is ______ difficult _____ he can't 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(tài)）
　　We _____ ______ a picture of the feathered dinosaur by Miss Li.
　　答案與簡析：
　　1. too…to…（太……而不能……）＝so …that …not （如此……以致……不……），所以，應(yīng)該填so, that。
　　2. 從轉(zhuǎn)換后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(jù)both的反義詞是neither，主語又是the surfers，因此應(yīng)填Neither of。
　　3. 本題實際上是對"by plane"提問，改換后的句子只是缺少了"is by plane"，因此，該將"by plane"改為"what"，后一個空用"is"。
　　4. 由showed確定要用一般過去時的被動語態(tài)，故填were shown/showed。