初中英语八大动词时态讲解动词的时态一共有16种，以ask为例，将其各种时态的构成形式列表如下：现在时过去时将来时过去将来时一般ask / asksaskedshall/will askshould/would ask进行am/is/are askingwas/were askingshall/will be askingshould/would be asking完成have/has askedhad askedshall/will have askedshould/would have asked完成进行have/has been askinghad been askingshall/will have been askingshould/would have been asking一、 一般现在时1、结构肯定式:主语+ am /is/are +其他 否定式:主语+ am/is/are +not + 其他 一般疑问句式:Am /Is /Are +
