1、复习动词的时态()语法精讲(1)一般现在时：(be 动词表现为 am，is，are；实义动词表现为动词原形或第三人称单数形式)经常发生的动作或存在的状态常与 usually，always，every day/week.等时间状语连用。She always goes there with her parents.她总是和父母一起去那儿。表示主语的特征或状态。Tom is a student from America.汤姆是一个来自美国的学生。在由连词 if，unless，when，as soon as 等引导的状语从句中，当主句为一般将来时时，从句常用一般现在时表示将来时。即“主将从现”。The
2、y will carry out the plan if the weather is sunny.如果天气晴朗，他们将执行那项计划。时间时刻表或计划安排好的事。The train leaves at 300 pm.火车下午 3 点离开。The first class starts at 800 am.第一节课 8 点开始。表示客观真理。The sun rises in the east.太阳从东方升起。(2)现在进行时(am/is/aredoing)表示正在进行的动作。They are talking about the plan.他们正在讨论那个计划。表示渐变。常用于以下这些动词：turn
3、，get，grow，become 等。Its getting colder and colder.天气越来越冷了。与 always，constantly，forever 等词连用表示说话者的某种情绪。He is always telling lies.他总是说谎。表示一段时间内发生的动作，说话时不一定在进行。He is making a new model plane.他一直在做一个新的模型飞机。Im not a clerk in this company.Im just helping out.我不是这家公司的员工，我只是在帮忙。表示将来的动作，多指已计划、安排好的事，常以人为主语，句中有未
4、来的时间状语。They are leaving this afternoon.他们打算下午离开。(3)现在完成时(have/has动词的过去分词)表示动作发生在过去，强调对现在造成的影响。The room is very clean.房间很干净。Someone has cleaned it.有人打扫过它了。表示过去已经开始，持续到现在的动作或状态，常与相应的时间状语连用：for时间段，since时间点，时间段before，in the past/last few years，so far，up to now；此外常用的副词有 already，never，lately，recently。He h
5、asnt used the computer in the past three weeks.在过去三周他没使用那台电脑。“这是第几次”后的定语从句中常用完成时态。This is the third time I have read the book.这是我第三次读这本书。用在时间条件状语从句中，表示从句动作先于主句的动作完成。You can go after you have finished homework.你做完家庭作业后可以去。注意：last，in thelastpast 用于过去时态，而 in the last/past three years 用于完成时态。three years
6、 ago(三年前)用于过去时态，three years before 常用于完成时态。非延续性动词不可与 for，since 等延续性状语连用，否则必须把非延续性动词转化为其他的适当形式。如：borrowkeep，buyhave，diebe dead(4)一般将来时表现形式：will/shall动词原形，表将来、意愿或决心。She will make a new bag.她将做一个新包。be going to动词原形：计划做，(客观迹象)预示。Its going to rain.We can see black clouds.要下雨了。我们能看到乌云。be about to动词原形，常与 wh
7、en 连用，不与具体时间状语连用。be to动词原形，表计划、注定、必须。be doing 表按计划，安排即将发生的动作，常用于 go，come，fly，arrive 等词。祈使句and/or主语will.Work hard and you will succeed.努力你就会成功。新思维随堂自测.用适当的时态完成句子1冬天这个地方很少下雪。It seldom _ here in winter.2你最近在忙些什么？What _ you _ these days?3他们打算跟我们举行一场比赛。They _ a competition with us.4在过去的三年里我经历了很多事情。I _ a
8、lot in the past three years.5明年这个时候他就 20 岁了。He _ 20 years old this time next year.snowsaredoingare going to havehave experiencedwill be6她的父亲对北京很熟悉因为他已经去过多次了。Her father _ Beijing very well because he _ there many times.7我们都知道在过去的二十年里我们家乡已发生了巨大的变化。We all know that great changes _ in the last twenty ye
9、ars in our hometown.8每个星期天当我去看他的时候，林先生总是在工作。Mr.Lin _ when I go to see him on Sundays.9自从 2011 年以来，他习惯的农村生活已经发生了很大的变化。The country life that he was used to _ greatly since 2011.knowshas beenhave taken placeis always workinghas changed.用所给动词的适当形式填空1The ship _(leave)the port at 3 tomorrow morning.2He _(
10、study)very hard since he came to our school.3He _(have)a bike of his own next week.4If it _(rain)tomorrow，Ill stay at home without going out.5The patient is _(die)6He will ask her for the book now，for she _(have)plenty of time to read since he lent it to her.7The train _(start)at eight oclock.8Some animals _(die out)in the future.9Listen！The birds _(sing)in the trees.leaveshas studiedwill haverainsdyinghas hadstartswill die outare singing
