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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,通常还原行为动词。 5.一般疑问句: be 动词放于句首; 把 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。





