英语肯定句变否定句怎么变?陈述句变一般疑问句?,陈述句变特殊疑问句?

肯定变否定一般是在be动词后加not,如果没有be动词,就加助动词does +not,did not ,变为一般疑问句时候,一般把be动词提前。或者句首加助动词does /did,特殊疑问句就是特殊疑问词加一般疑问句。例如he is a boy 。-he is not a boy,he does/did homework-he does not do /did not do homework。he likes reading books。-what does he like