八种时态 主动语态 被动语态
一般现在时 (经常,反复,爱好,特点,条件,真理) do; does am;is;are done
一般过去时 (过去发生的事,不强调现在的结果) did; -ed was;were done
一般将来时 (将要发生的事) will do will be done
现在进行时 (现在正在发生的事) am;is;are doing am;is;are being done
过去进行时 (当时正在发生的事) was;were doing was;were being done
现在完成时 (过去发生的事,强调现在的结果) have;has done have;has been done
过去完成时 (过去完成的事；过去以前发生的事) had done had been done
过去将来时 (过去将要发生的事) would do would be done
八种时态：
• He is always ready to help others. 一般现在时
• She often came to help us in those days.一般过去式
• He is doing his homework now. 现在进行时
• At that time she was doing her homework.过去进行时
• I've written an article.现在完成时
• By the end of last month. We had reviewed four books .过去完成时
• It is going to rain.一般将来时
• I asked who was going there. 过去将来时
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,动词上要改为第三人称单数形式）
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：.
I am a student.——I am not a student.——Is she a student?
He knows the answer of my question.
He doesn’t know the answer of my question.
Does he know the answer of my question?
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, last(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；I was a student last year.
行为动词 的过去式I finished my homework yesterday
4.否定形式：was/were+not; I was not a student last year.
在行为动词前加didn't,同时还原行为动词.I didn’t finish my homework yesterday
5.一般疑问句：was或were放于句首；Were you a student last year?
用助动词do的过去式did 提问,同时还原行为动词.Didn’t they finish my homework yesterday?
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, days, etc. look . listen
3.基本结构：be+doing He is doing his homework now.
4.否定形式：be+not+doing. He is not doing his homework now.
5.一般疑问句：把be动词放于句首.Is he doing his homework n
追问行为动词是什么
追答行为动词就是有动作的