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:. It seldom snows here. He is always ready to help others. Action speaks louder than words. 基本形式(以do为例):
第三人称单数:does(主语为非第三人称单数);
肯定句:主语+动词原形+其他; He works for us.
否定句:主语+don?t/doesn't+动词原形+其他;
He doesn't work for us.
一般疑问句:Do/Does+主语+动词原形+其他。
肯定回答:Yes,(+ 主语+do/does). 否定回答:No,(+主语+don't/doesn't.) 特殊疑问句:疑问词+一般疑问句语 Does he work for us? Yes, he does. No, he doesn't
What does he do for us? He works for us.
1.表示现在习惯或经常反复发生的动作。常与always, usually, often, sometimes, every day (week, month)等连用。 He plays football twice a week.他每周踢两次足球。 I sometimes go to work on foot.我有时步行去上班。 2.表示现在的事实或状态。 It?s cold today.今天很冷。
You look tired now.你现在看起来很疲乏。
3.表示主语所具有的特征,性格和能力等。 She is a famous singer.她是个著名的歌唱家。 Tom likes swimming.汤姆喜欢游泳。 4.表示客观事实或普遍其理。
It?s far from the earth to the sun.地球与太阳间的距离很远。 Five and three makes eight.五加三得八。 5.表示已预先安排或计划好将来确定会发生的动作。
但主要用于go, come, leave, start, return, arrive等瞬间动词。 The train from London arrives at 7:00.从伦敦来的火车7:00到站。
He leaves on business the day after tomorrow.他后天出差。 6.在时间及条件状语从句中表示将来的动作。
I?ll call you as soon as I get there.我一到那里就打电话给你。
I?ll come if he invites me.他如果邀请我我就来。 7.在以here, there开头的句子里,表示正在发生的动作。 Her comes the bus!汽车来了! There goes the bell!铃响了!
当主语是代词时,代词必须放在动词之前。如: There he comes!他来了!
8.某些表示心理状态和感觉的动词,如feel, love, hope, want, understand等表示现在发生的具体行为。
I feel pain in my head.我头疼。
I don?t understand what you mean.我不理解你的意思。 此时只用一般现在时而不用现在进行时。
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;行为动词 的过去式
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. be动词+行为动词的过去式
否定句式:在行为动词前加didn?t,同时还原行为动词,或was/were+not;
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 例如: Did he work for us? He didn't work for us. He worked for us.
1.表示过去发生的动作或存在的状态,常与表示过去时间的副词如:yesterday, last week, two hours ago等连用。 My family moved here five years ago.我家五年前搬到了这里。
I was born in 1973.我生于1973年。
2.表示过去一段时间经常或反复发生的动作。这时可与频度副词如:often, usually, always等连用。
He always worked into night those days.那些日子他总是工作