中考英语动词时态专项讲解学案The time and tense axis past present future had done did do/does will/shall doing was/were doing am/is/are doing have/has done would/should do一般现在时1. 一般现在时的构成be动词的一般现在时:肯定句:主语+be(am/is/are)+.否定句:主语+be(am/is/are)+not +.is not = isnt are not = arent一般疑问句:Be(am/is/are)+主语