【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《英语各种时态的概念和句型结构》，欢迎阅读！
英语各种时态的概念和句型结构
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：含有Be动词主语+was/were+...... 不含有be动词：主语+动词过去式+......
4.否定句：带be:主语+was/were not+动词原形+...... 不带be：主语+didn't+动词原形+......
5.一般疑问句：含be动词was或were放于句首;
不含be动词用助动词do的过去式did 提问，同时还原行为动词原型。 6.例句：She often came to help us in those days. I didn't know you were so busy.
She sang a song of Lin Feng yesterday[1]. 一般现在时
1.概念：指经常、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.
7.特殊用法：一些动词可用一般现在时来表达现在进行时： verbs of the senses: hear,see,taste,smell
verbs of the thinking: believe,know,mean,realize,think,remember verbs of the linking: dislike,fear,hate,like,love,want
verbs of the possession: belong,have,own,possess 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：Be动词、am/is/are+doing 4.否定形式：Be动词、am/is/are+not+doing. 5.一般疑问句：把be动词放于疑问词的后面。 6.例句：How are you feeling today? He is doing well in his lessons.
7. 一般表示位移的词如leave fly arrive go come. 等用现在进行时表将来。 I am flying Beijing next week .表示我下周即将飞往北京。 He is leaving for Beijing tomorrow. 他明天即将去北京。 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 + done. 5.一般疑问句：have或has提前。 6.例句：I've written an article.
It has been raining these days. 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. 过去完成时
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2023-04-13
