初中英语句型转换的解题方法

初中英语句型转换的解题方法

句型转换是中学英语基础训练的典型题型，也是中考必考的重点题型之一。在历年的中考中，句型转换题所占的分值一直挺大，而且有愈来愈高之势。这是因为这种题型可以有效地帮助学生理解并巩固所学的句型，掌握各种句型的内在含义，帮助学生掌握各种句型的句式结构和不同句式的变化技巧，理解并掌握句型与句型间的相互转换规律。只要学生掌握了句型转换的本质含义和解题技巧，不仅能熟练地运用各种句式和句型进行口头表达，还能够熟练地做句型转换题，把所学的句型和句式举一反三，灵活运用，这样就把口头运用转换成了笔头运用，从而培养了学生的综合语言运用能力。

一、由肯定句变为一般疑问句

由肯定句变为一般疑问句的规则是把助动词置于句子的主语之前而把句子变为疑问语序。解题时应把握以下几点：

1、句子的谓语动词如果是be动词，则把be动词直接提到主语之前。

（注：在肯定句和一般疑问句中主语的一、。二人称要互换）

eg. (1) We are in Class 1, Grade 7 .

→Are you in Class 1, Grade 7

(

(2) He's polite and helpful .

→Is he polite and helpful

(3) There are some birds in the big tall tree .

→Are there any birds in the big tall tree

(4) Some Americans are going to visit our school next week .

→Are some Americans going to visit your school next week

(5) A new modern bridge is being built over the Changjiang River .

→Is a new modern bridge being built over the Changjiang River

'

2、句子的谓语动词中如果有情态动词，则把情态动词直接提到主语之前。eg. (1) They can park their cars in front of the supermarket .

→Can they park their cars in front of the supermarket

(2) I'd like some more dumplings .

→Would you like some more dumplings

(3) Children must be kept away from fire .

→Must children be kept away from fire

3、句子的谓语动词如果是现在完成时或过去完成时，则把时态中的助动词have,has,had提到主语之前即可。

）

eg. (1) I have finished reading the interesting book .

→Have you finished reading the interesting book

(2) The old woman had been dead before her dauther arrived .

→Had the old woman been dead before her dauther arrived

4、当句子中没有be动词和情态动词等词时，句子的谓语动词如果是行为动词的一般现在时或一般过去时，在改为一般疑问句的时候，根据主语的人称和单、复数，需要添加助动词do（一般现在时）、does(一般现在时三单形式)或did （一般过去式）。

eg.(1) We enjoy the football matches very much .

→Do you enjoy the football matches very much

(2) Her mother does some cleaning every morning .

%

→Does her mother do some cleaning every morning

(3)She went to see her doctor yesterday .

→Did she go to see her doctor yesterday

（注：在添加了助动词的一般疑问句中，行为动词一律为动词原形。）

二、由肯定句变为否定句

由肯定句变为否定句的规则是在句中的助动词之后添加否定词not。如果句中的谓语动词的情况和上述1、2、3点相同，则直接在be动词、情态动词和have、has或had之后添加否定词not 。除了be动词的am词形外，否定词not可以和助动词缩写为“助动词+ n't”。而如果句中没有be动词和情态动词等词时，句中的谓语动词是行为动词的一般现在时或一般过去时，则要先添加助动词do、does或did，再在其后添加否定词not，分别可以缩写为don't、doesn't和didn't 。（注：在行为动词一般现在时和一般过去时的否定句中，行为动词也一律为动词原形。）

eg.(1) He is from England .

$

→He isn't from England .

(2) They can look for things on the Internet in Computer lessons .

→They can't look for things on the Internet in Computer lessons .

(3) I have seen the interesting film already .

→I haven't seen the interesting film yet .

(4) His brother often plays foogball after school .

→His brother doesn't often play football after school .

(5) My grandma came for dinner yesterday evening .

；

→My grandma didn't come for dinner yesterday evening .

下面几种句型在变为否定句时情况特殊一些，做题时须引起注意：

(1) I think + 宾语从句。

该句型在变为否定句时，否定词not应放在主句上，即为：I don't think + 宾语从句。

eg. I think it will rain tomorrow .

→I don't think it will rain tomorrow .

(2) 祈使句

祈使句的特征是没有主语，以动词原形开头。在变为否定句时，应在动词原形之前添加助动词don't .

;

eg. (1) Water the flowers .

→Don't water the flowers .

(2) Please clean the blackboard .

→Please don't clean the blackboard .

三、句子的单复数互换

句子的单复数转换的规则是：对应句中的名词、代词、动词等，能变则变，不能变的，要么保留，要么去掉。要做到熟练掌握并运用这一规则，必须掌握名词的单复数的变化规则，代词对应的人称和单复数，动词的第三人称单数的变化规则等。在解题过程中，还必须具体情况具体对待。