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

为了使学生能够又快又对地完成句型转换题，本人从网络上搜集了有关这一类题的解决办法，经过自己认真的分类和总结。现在把这类题的解决办法一文本的形式展示给大家：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或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、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、does或did 。

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 .

三、对句中的划线部分提问

对句中的划线部分提问是句型转换题的重要组成部分。该题型的主旨是确定划线部分在句子中是什么成分，用合适的疑问词放在句首代替该部分而构成特殊疑问句。解该题型可使用“三步提问法”。具体步骤如下：

1、先选择一个合适的疑问词。

英语中主要的疑问词有：what , who , when , whose , where , why , which , how , how old , how many , how much , how long , how often , how soon , how far , 等。疑问词的确定要根据句中的划线部分作什么成分。上述疑问词的用法主要为：

what :用来询问事物、人的姓名和职业。另外，和不同的词一起使用还可询问具体的方面，

如what time询问时间，what colour询问颜色等。

who :用来询问人，尤其指人与人之间的关系。

whose :用来询问归属，即和人之间的所有关系。

when :用来询问时间，一般指较大的时间范围。（小范围的时间可用what time）where :用来询问地点。

which :用来询问哪一个，主要针对名词的定语提问。

why :用来询问原因，标志是because .

how :用来询问方式、程度。

how old :用来询问年龄。