1,一般现在时:指的是经常或者习惯性的动作和状态。
标志词:always ,every , sometimes ,often ,usually,I often play football .2,一般将来时:将要发生的动作和状态。标志词:next ,following …,tomorrow,结构;will/shall(第一人称)加动词原形He will play football tomorrow3,一般过去时:过去经常或者习惯的动作和状态。标志词:ago ,yesterday, last , just now ,before,I played football yesterday afternoon.4,现在进行时:此时此刻正在进行的动作和状态。标志词:now ,at the moment , right now ,at once结构:be + doing (动词的现在分词)5,现在完成时:过去发生的动作都现在造成的影响。标志词:since ,for ,ever ,never ,just ,already ,yet结构:have /has +动词过去分词I have played football for two years .