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be I am +n./adj./介词短语 动 He/She/It is +n./adj./介词短语 词 You/We/You/They are +n./adj./介词短语 实 I/You/We/You/They +动词原形+意 动 He/She/It +动词三单形式+词 经常性或习惯性的动作或状态。always,often,usually,seldom,every day,sometimes be I /He/She/It was +n./adj./介词短语 动 词 You/We/You/They were +n./adj./介词短语 实意动词 各人称单/复数 +动词过去式 +She was in the USA some years ago.You were the best student in our class last term.He had a new car.We visited our uncle last week.过去发生的动作或者是一种状态,与现状事实相反。yesterday,last week,an hour ago,a moment ago I/We +shall +动词原形 +各人称单/复数 +will +动词原形+be going to +动词原形 +Shall I/We+动词原形+（征求某人意见时）例句：Shall I open the window?将要发生的动作或事先计划好将要发生的动作。next week,tonight,in five minutes I am +现在分词+He/She/It is +现在分词+You/We/You/They+are +现在分词+Mom is sleeping at the moment.The scientist is doing an experiment this week.Jack is coming soon.(按计划将要发生的动作)It is getting dark.(表示事物发生变化的过程)此时此刻正在进行或发生的动作；当前一段时间内持续进行的动作。now,at present ,this week,these days I /He/She/It was +现在分词+You/We/You/They were +现在分词+Dad was washing the car at six oclock yesterday morning.We were doing our homework at 8:00 last night.I was staying in HK last year.They were building a bridge last year.What were you doing at nine last night?过去某时刻或某一时间段内一直持续的动作。at six o clock ,at that time,last week I/You/We/You/They +have +过去分词 +He/She/It +has +过去分词 +I have already had lunch.They have not rrived yet.He has locked the door.She has been an artist for 3 years.They have been to America.（have been to 去过某地，已经回来）他们去过美国。They have gone to America.（have gone to 去了某地，还未归来）他们去了美国。过去完成的动作(对现在有影响)；从过去一直延续到说话时的动作或状态。already/just/yet/ever/never /since/for 肯 1.主语+连系动词+表语 定 陈 2.主语+谓语（vi）述 句 3.主语+谓语（vt）+宾语 注：不管句子怎么变化，动词（或助动词）总是位于第二位。表达一种事情或是看法。末尾用句号，朗读用降调。1.谓语为be动词时：be+not+2.谓语为实意动词（前面没有be动词及情态动词）时：现在时现在时过去式过去式am not am notwas notwasntis notisntwere not werentare notarent第一人称及其他第一人称及其他三单三单过去时过去时 do not+动词原形I dont like.You dont like.We dont like.You dont like.They dont like.does not+动词原形 He doesnt like.She doesnt like.It doesnt like.did not+动词原形 3.谓语为“助动词+实意动词”时：助动词+not+实意动词（同肯定句时态一致）例句：I am not going to play games.I have not finished my homework.4.谓语为“情态动词+实意动词”时：情态动词+not+动词原形 例句：We can not go swimming this weekend.She will not be at the patry tonight.Children should not play on the road.常用助动词：常用助动词：be,do,have,shall(should),will(would)常用情态动词：常用情态动词：shall,should,will,would,can,could,may,might,must,dare,need,ought to
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