小学英语句型转换肯定句变否定句一、概念：什么是肯定句和否定句？肯定形式肯定句否定形式否定句陈述句陈述句：说明一件事情、一个想法，提出一个观点或表达自己心情的句子。特点是：句末都是句号，用降调读！肯定句变否定句的方法1.含“be动词和情态动词”型，直接在be动词或情态动词后加not,其它照抄不变。be动词包括：am,is,are,was,were.常见的情态动词有：can,could,would,will,may等等。例句：I am a student. I am not a student.He is a boy. He is not/isnt a boy.I can speak English.I can not/cant speak English.肯定句变否定句的方法注意缩写： is not = isnt, are not = arent , was not = wasnt, were not = werent, am not没有缩写， 但是I am = Im can not = cant, would not = wouldnt could not = couldnt, wil
