1、口诀转换英语句型转换
句型转换是英语学习中一大难点，很多学生在做这类题时频频出错，下面是我们结合日常学习总结的转换口诀。
一、肯定句变否定句：分两种变化
1. 找插
找：如果句子中有系动词（is，am，are，was，were）、情态动词（can, may, must, could, might, shall , should, will, would,, need,）助动词（have，has）时，直接在后面插入not。
例：
My parents will have dinner at seven this evening.直接在will后插入not
My parent
2、s will not have dinner at seven this evening
2.如果句子中不存在以上词语，要遵循找判分插
找：找出句中的实意动词。
判：根据实意动词判断句子的时态。
分：将实意动词分成时态标志词和动词原形。
插：在助动词后插入not。
例一：She often watches TV on Sundays.
找到实意动词watches
判断时态：一般现在时
分成时态标志和动词原形does和watch
插入not：在两个词中间插入not，并注意细节变化。
She often watches TV on Sundays.
3、 does watch
not
She doesn’t often watch TV on Sundays.
（频率副词要用在实意动词前、助动词后）
例二：Our teacher told a story to us.
找到实意动词told
判断时态：一般过去时
分成时态标志和动词原形did和tell
插入not：在两个词中间插入not，并注意细节变化。
Our teacher told a story to us.
did tell
not
Our teacher didn’t tell a story to us
二、肯定句变一般疑问
4、句：分两种变化
1.找提
找：如果句子中有系动词（is，am，are，was，were）、情态动词（can, may, must, could, might, shall , should, will, would,, need,）助动词（have，has）时，直接将这些单词提到句首，句子后边问号，注意人称变化。
例：
My parents will have dinner at seven this evening.
直接将will提到句子前面，句后变问号，注意人称变化。
Will your parents have dinner at seven this evening
2
5、如果句子中不存在以上词语，要遵循找判分提
找：找出句中的实意动词。
判：根据实意动词判断句子的时态。
分：将实意动词分成时态标志词和动词原形。
提：在助动词提到句子前面，句后变问号。
例一：She often watches TV on Sundays.
找到实意动词watches
判断时态：一般现在时
分成时态标志和动词原形does和watch
提助动词提到句子前面，句后变问号，并注意人称变化。
She often watches TV on Sundays.
does watch
Does she often watch TV on Sundays.
例二：Our teacher told a story to us.
找到实意动词told
判断时态：一般过去时
分成时态标志和动词原形did和tell
提助动词提到句子前面，句后变问号，并注意人称变化。
Our teacher told a story to us.
did tell
Did your teacher tell a story to you？
三、特殊疑问句的变化：
每一个特殊疑问词都对应
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