初中英语时态标志词一、 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don't, 如主语为第三人称单数，则用doesn't ，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 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didn't ，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 didn't 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...
