Unit 1 The Changing World.Topic 1 Our country has developed rapidly.时态复习课件42张PPT

课件42张PPT。Review Of Tenses时态的种类：初中常见的8种时态一般现在时　　一般过去时现在进行时　　过去进行时　　　　现在完成时　　一般将来时　　过去完成时　　现在完成进行时　Look!Lily Lucy What a fine day today! Look.... Grammar现在进行时: Present Progressive概念: 表示现在正在发生的动作
结构: be (is, am, are) + doing
标志语：at the moment,these days ,right now,Look! Listen! now动词-ing形式的构成：writing
takinggetting
running
swimmingaskingExerciseThe twins ___________(wash) the clothes now.
Look! He ________ (play) basketball over there.
Listen! ______ Sally _______(sing)?are washingis playingPair workHow often do you …?
(once a week, twice…, never)ReportI have a friend. His / Her name is….
He / She plays…. Grammar一般现在时: Present Simple
概念: 表示习惯、经常性的动作
结构: do、 does
标志语：usually、often、never、
sometimes、once a week、
twice a month、every year1、大多数动词在词尾加“S”在清辅音后发音为[s]，在浊辅音及元音后发音为 [z]。如： ①stop－stops [s] ; make－makes [s] ②read－reads [z] ; play－plays [z]
2、以辅音字母加“y”结尾的，要先将“y”变为“i”，然后在加“es”读[iz] 如： fly－flies [z]； carry－carries [z] study－studies [z]; worry－worries
3、以“s, x, ch, sh”结尾的，在词尾加“es”，发音为[iz] 如： teach－teaches [iz]; watch－watches [iz]
4、以“o”结尾的动词，加“es”，读[z] 如： go－goes [z] do－does [z]
第三人称单数变化规则ExerciseThe twins ___________(wash) the clothes every day.
Sometimes he ________ (play) basketball over there.
How often ____ Sally ______(sing)?washplays我一到达那儿，就会给你写信。
——————————————————————一般现在时的注意点:1 、表客观事实或普遍真理
The earth _____ (go) round the sun .2 、 在when ,as soon as, until, after, before等到引导的时间状语从句和if 引导的条件状语从句中, 用一般现在时表示将来. If it doesn’t rain tomorrow, we’ll go on a picnic .goes如果明天不下雨，我们将去野营。
———————————————————I’ll write to you as soon as I get there .
Survey-- What did you do last Sunday morning?
-- I went to….ReportLast Sunday morning, my friend….
In the afternoon, he/she….
And at night, he/she…Grammar一般过去时: Past Simple
概念: 表示过去发生的动作
结构: did
标志语：yesterday、... ago、just now , in the past , in 1992、 last week/month…动词-ed形式的构成：moved
diedcarried
criedstopped
plannedansweredgotdranktookwentswamatecutwerehaddidcamesaidsawput常见不规则过去式ExerciseThe twins ___________(wash) the clothes yesterday.
The day before yesterday he ________ (play) basketball over there.
_____ Sally ______(sing) two hours ago?washedplayed一般过去时的注意点:1、当没有明显的时间状语时,描述几个相继发生过的动作　I always got up too late , washed my face , had a quick breakfast and hurried to school .2、since从句中常用一般过去时You haven’t changed much since we last ______(meet) .metConversation-- Have you packed … yet?
-- Yes, I have packed ….
No, I haven’t …Grammar现在完成时: Present Perfect
概念: 表示已经发生的动作
结构: has / have + done
标志语：already、 yet、ever、before,
just, never、since…、for…、so far ,in the past/last five years, recently不规则过去分词got gottenwent goneate eatencut cutwere beendid donesaid said不规则过去分词took takenswam swumdrank drunkput puthad hadcame comesaw seenExerciseThe twins ___________(wash) the clothes for an hour.
He ________ (play) basketball since three years ago.
How long _____ Sally ______(sing) yet?have washedhas played现在完成时的注意点:1. have been to , have been in 和 have gone to 的区别 2. 短暂性动词和持续性动词 1).Tom ____never____ to America2).---- Is Tina at home? ---- Sorry, she ________ Shanxi, and she ________Shanxi for three days.短暂性动词指的是短时间内完成的动词，要转化为延续性动词可以首先找到与短暂性动词对应的可持续一段时间的动词，如：短暂性动词borrow（借）转化为keep（借/保留很长时间）；可以把短暂性的动词转化为be加介词或是形容词或是副词短语，转化为状态，表示对应的意思。如：短暂性动词join the army（参军）转化为be in the army（在军队里）。
　　　　die → be dead；leave→ be away(from) ；finish / end→ be over； begin / start → be on；open → be open ； close → be closed； come here → be here；come back→ be back；marry → be married；fall asleep / get to sleep → be asleep； return → be back ； get up→be up；put on →wear ；become →be；catch a cold → have a cold。译下列句子：３、这本书他买了一年了

4、 这本书他借了三天了。

5、我们离开广州六年了。
He has bought this book for a year .He has had this book for a year .He has borrowed the pen for three days .He has kept the book for 3 days .We have left Guangzhou for 6 years . We have been away from Guangzhou for 6 years .×××短暂性动词不能跟表示一段时间的状语连用, 必须转变成持续性动词Exercise had hadShe told me that she__________ (have)
this bike for three years.Grammar过去完成时: Past Perfect
概念: 表示过去的过去已经发生的动作
结构: had done
标志语：by the time, 或主句为
一般过去时的宾语从句中过去完成时的注意点:用于宾词从句中，当主句的谓语动词是一般过去时时,一定要注意宾语从句中的时态变化。He said that he _________the film many times.had seen
--- Why didn’t you come and open the door for me, dear?
--- Sorry, Jack. I ______ in the kitchen and didn’t hear you.
was cooking B. am cooking
C. wave cooked D. will cookExercise Grammar过去进行时: Past Progressive
概念: 表示过去正在发生的动作
结构: be (was，were) + doing
标志语：at 8:00 yesterday 、at that moment,then,at that time
when、 while、…过去进行时的注意点:在when , while引导的时间状语从句中, 表示主从句中两个动作同时发生时, 用过去进行时表示 .When my father got home, I _____ a letter to my friend. (2008宁波中考)
write B. am writing
C. wrote D. was writing较长的动作Exercise will beThe radio says that it __________(be)
sunny tomorrow.Grammar一般将来时: Future Simple
概念: 表示将要发生的动作
结构: will do、 shall do、
be (is、am、are) going to do
标志语：tomorrow、in..、next…, soon, later, Look at the dark clouds, it _________rain.
Tomorrow _______ be a sunny day.
一般将来时的注意点:willis going to Grammar过去将来时: Past Future Simple
概念: 表示过去将要发生的动作
结构: would do
be (was、were) going to do
标志语：常用于主句是一般过去
时的宾语从句中Exercise 1.The volleyball match will be put off if it .
A . will rain B. rains C .rained D. is raining 2.---Do you want to see the film “Harry Potter ”?
---The film “Harry Potter Ⅱ”? I _____ it . It’s
very wonderful. (2008黄岗中考)
A.see B.have seen C.was seeing D.has seen3.The boy ______________(not swim) in the river yet.hasn’t swum5.---Where is Liu Mei?
--- She___________(go) home.4.--- Where is your father?--- He ___________ (watch) TV in the room.7.He asked what time they___________(do)
at eight last night.were doing8.I know that he _________(join) the army in1985.joined6.We don’t know if it ___________(rain) tomorrow. If it ________ (rain) tomorrow, we’ll not go for a picnic.is watchingwill rainrainshas gone9 .He’s not hungry. He_____ just________ (have) lunch.
11.---______the Blacks __________(visit) the Great Wall before?
---Yes , they_________.
---When _______they _______(visit) it?
---Only a month ago.10. I’m sure he ____________(work) it out in one hour.has will workHave had visited havedid visit 12.He___________(look) out of the window when the match______(begin).
Was lookingbeganExerciseiscomesIs drawingmoved didn’t haveusedhasstudiesWill visitComposition: IWritehomework