ep:he is ok.否定句:在谓语动词后加not。 he is not ok.一般疑问句:把谓语动词提前。 is he ok?有助动词:Did he finish his homework yesterday?(疑问句)No ,he did not finish it。(否定句)
否定句:助动词或动词后加not一般疑问句:把助动词或动词提前
否定句;主语+be动词+NOT+其它一般疑问句;be动词+主语+其它