英语八大时态讲解及练习.doc

英语八大时态讲解及练习 一、??? 一般现在时： 1.概念：经常、反复发生的动作或行为及现在的某种状况。 2.时间状语： always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, 3.基本结构：动词 原形 （如主语为第三人称单数，动词上要加（e）S） 4.否定形式：am/is/are+not;此时态的谓语动词若为行为动词，则在其前加dont,如主语为第三人称单数，则用doesnt，同时还原行为动词。 5.一般疑问句：把be动词放于句首；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。 6.例句：. It seldom（很少） snows here. He is always ready to help others. Action speaks louder than words. ? 二、 一般过去时： 1.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。 2.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. 3.基本结构：be动词；行为动词 4.否定形式：was/were+not;在行为动词前加didnt，同时还原行为动词。 5.一般疑问句：was或were放于句首；用助动词do的过去式did 提问，同时还原行为动词。 6.例句：She often came to help us in those days. I didnt know you were so busy. 三、 现在进行时： 1.概念：表示现阶段或说话时正在进行的动作及行为。 2.时间状语：now, at this time, these days, etc. 3.基本结构：am/is/are+doing 4.否定形式：am/is/are+not+doing. 5.一般疑问句：把be动词放于句首。 6.例句： How are you feeling today? He is doing well in his lessons. ? 四、 过去进行时： 1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。 2.时间状语：at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。 3.基本结构：was/were+doing 4.否定形式：was/were + not + doing. 5.一般疑问句：把was或were放于句首。 6.例句：At that time she was working in a PLA unit. When he came in, I was reading a newspaper. ? 五、 现在完成时： 1.概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。 2.时间状语：recently, lately, since…for…,in the past few years, etc. 3.基本结构：have/has + done 4.否定形式：have/has + not +d one. 5.一般疑问句：have或has。 6.例句：Ive written an article. It has been raining these days. ? 六、 过去完成时： 1.概念：以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即“过去的过去”。 2.时间状语：before, by the end of last year(term, month…),etc. 3.基本结构：had + done. 4.否定形式：had + not + done. 5.一般疑问句：had放于句首。 6.例句：As soon as we got to the station, the train had left. By the end of last month. We had reviewed four books ? 七、 一般将来时： 1.概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。 2.时间状语：tomorrow, next day(week