英语句式分析：肯定句转换程否定句方法

　　1.

　　There is some milk in the bottle.

　　There ______ milk in the bottle.

　　2. They have already been to America.

　　They have ________ been to America ________ .

　　3. Both of the twins are studying in No. 1 Middle School.

　　______ of the twins _______ studying in No. 1 Middle School .

　　4. All of the students are in the classroom.

　　______ off the students _______ in the classroom .

　　5. They have sorts after school.

　　They _____ ______ sports after school.

　　1. isn’t any 肯定句转换为否定句或一般疑问句时some要改为any。

　　2. not…yet 肯定句转换为否定句或一般疑问句时already要改为yet。

　　3. Neither…is 肯定句转换为否定句时both要改为neither，且作主语时，谓语动词由复数形式改变为单数形式。

　　4. none…is/ are 肯定句换为否定句时，all要改为none，且作主语时，谓语动词既可用单数形式也可用复数形式。

　　5. don’t have… 肯定句转换为否定句或疑问句时，谓语动词have作行为动词时，一定要用助动词do。如：We had a good time .转换为一般疑问句是Did you have a good time ?再如：The boy has breakfast at 6:30转换为反意问句是The boy has breakfast at 6:30 , doesn’t he ?