英语共有16种时态,分为一般现在时(do),一般过去时(did),一般将来时(will do),现在进行时(is/am/are doing),过去进行时(was/were doing),将来进行时(可与一般将来时换用,will be doing),现在完成时(have/has done)。
过去完成时(had done),发生在一般过去时的动作之前),将来完成时(will have done),现在完成进行时(have/has been doing),过去完成进行时(had been doing),将来完成进行时(will have been doing),过去将来时(would do),过去将来进行时(would be doing),过去将来完成时(would have done),过去将来完成进行时(would have been doing)等。
一、一般现在时:
概念:经常、反复发生的动作或行为及现在的某种状况.
时间状语: always, usually, often, sometimes, every week (day, year, month…), once a week, etc.
基本结构:①be动词;②行为动词
否定形式:①am/is/are+not;②此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词.
一般疑问句:①把be动词放于句首;②用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词.
二、一般过去时:
概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为.
时间状语:ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.
基本结构:①be动词;②行为动词
否定形式:①was/were+not;②在行为动词前加didn't,同时还原行为动词.
一般疑问句:①was或were放于句首;②用助动词do的过去式did 提问,同时还原行为动词.