1、一般现在时一般现在时经常性动作等。常与everyday,often,always,once a week,seldom,usually等连用。She is our teacher of English.真理和事实。Light travels faster than sound.代替一般将来时，在由when,if,before,as soon as,unless等引导的时间，条件状语从句中，用一般现在时代替一般将来时。When I grow up I shall be a soldier.动作正在发生，用在由here,there等开首的句子中，表示现在正在发生。There goes the be
2、ll.表示主语的习惯特征，性格，能力等。He studies very hard.一般的说明文字等。The book says that women can live longer than men.一般过去时一般过去时表示过去的某个时间发生的动作或存在的状态，常和明确的时间状语连用。She went out just now.I saw him yesterday.表示过去经常发生的动作。Last month she worked eleven hours every day.He used to get up early.一般将来时一般将来时 表示将来发生的动作或存在的状态。I shall
3、 not be free tonight.表示将来经常发生的动作。We will go for an outing every other week.表示将来动作的其他形式.be going to+动词原形be to+动词原形be about(around/sure/certain/due/bound)to+动词原形过去将来时过去将来时表示在过去将来的某一时间发生的动作或存在的状态。I didnt expect that so many people would offer their help.也可用was/were to+动词原形或was/were about to+动词原形或was/we
4、re going to+动词原形表示过去将来时。I was about to leave when the telephone rang.现在进行时现在进行时表示正在进行的动作。What are you doing now?表示即将发生的动作.She is leaving tomorrow.表示现阶段正在进行的动作.More and more people are giving up smoking.表示反复发生的或习惯性的动作,常表示不满,抱怨,赞赏等.She is always finding fault with others.过去进行时过去进行时 1.过去某一时刻在进行的动作经常需要表
5、示过去的时间状语 This time yesterday,they were having lunch.2.过去进行时常与一般现在时配合，互为时间背景 I was writing a letter when he came.The telephone rang while she was washing.3.过去反复的动作，常同always,frequently,continually等连用 They were frequently going there.将来进行时将来进行时 表示将来某一时刻正在进行的动作，常表示安排好的事 They will be discussing the probl
6、em this time next week.表示预料不久要发生或势必要发生的动作 The train will not be leaving until one oclock.现在完成时现在完成时 表示动作刚刚完成.I have finished that work.表示过去做的动作对现在仍有影响.Who has opened the door?表示过去某时开始的动作一直延续到现在并且可能会延续下去.He has worked in the company since he came to the city.过去完成时过去完成时 表示在过去某一时间或动作之前已经完成的动作 By the en
7、d of 2002,the factory had produces 200000cars.表示在过去某一时间开始一直延续到另一个过去的时间的动作 The old man had been ill for a long time before he died in 2002.当含有由当含有由before,after,as soon as等引导的复合等引导的复合句中，由于连词本身可以明确表示动作发生的顺句中，由于连词本身可以明确表示动作发生的顺序，故主句和从句一般都用一般过去时序，故主句和从句一般都用一般过去时 I went home after I finished my work.过去完成时
8、常用于过去完成时常用于no sooner than和和hardly,scarcelywhen等句型，从句用一般过去时等句型，从句用一般过去时 He had hardly got on the train when the train started out.将来完成时将来完成时 表示将来某一时刻或某一行为发生之前所表示将来某一时刻或某一行为发生之前所完成的动作或这一动作仍在持续常和完成的动作或这一动作仍在持续常和by或或by the time等连用等连用 By the end of this term,we shall have learned 18 lessons.现在完成进行时现在完成进行
9、时 表示从过去某时一直持续到现在的一个表示从过去某时一直持续到现在的一个动作动作 It has been snowing since last Sunday.重复的动作表示感情色彩重复的动作表示感情色彩 Shes been saying that twenty times.已结束的动作所产生的影响已结束的动作所产生的影响 You have been cleaning the classroom,I think.过去完成进行时过去完成进行时 表示过去某时以前一直进行的一个动作这表示过去某时以前一直进行的一个动作这一动作可能在这一时间前刚结束或仍在进一动作可能在这一时间前刚结束或仍在进行行.No one knew what this dad egg had been doing all this years.
