人教新目标 (Go for it) 版八年级下册Unit 7 What’s the highest mountain in the world?Section A教学ppt课件

这是一份人教新目标 (Go for it) 版八年级下册Unit 7 What’s the highest mountain in the world?Section A教学ppt课件，共38页。PPT课件主要包含了英语时态，已学习过的时态，see，leave，bring，buy，take，find，make，have等内容，欢迎下载使用。

现在完成时The Present Perfect Tense
复习现在完成时的构成和两种基本用法；
1.现在完成时与一般过去时的区别；2.现在完成时中动词延续性的用法。
培养学生的竟争意识和团队精神。
Learning aims
不同时间发生的动作，动词要用不同形式。
1.v原形 2. v三单
am/is/are+v-ing
1.will+v原形2.am/is/are ging t +v原形
1.v-ed（规则动词）2.不规则动词
was/were+v-ing
①过去发生的动作对现在造成的影响或结果。“过去对现在”（瞬间动词）
had breakfast
I’m nt hungry nw
I have just had my breakfast.
②过去已经开始，持续到现在的动作或状态。“过去到现在”（延续性动词）
I have lived here fr three years.
I have lived here since 2014/three years ag.
mved herein 2014
I still live here
1.动作已经发生。2.没有具体的时间状语。3.强调结果。
现在完成时的谓语构成:
haven’thasn’t
Have yu……?Has he……?
have / has +v过去分词
三、现在完成时的句型结构：
主语+助动词have (has)＋过去分词” +其它
主语+haven’t（hasn’t）＋过去分词+其它。
Have /Has+主语+过去分词+其它？
肯定回答：Yes, sb.+have (has). 否定回答：N, sb.+haven’t (hasn’t).
I, finish,hmewrk
I haven’t finished my hmewrk.
Have yu finished yur hmewrk?
I have finished my hmewrk.
Yes, I have. / N, I haven’t.
动词的过去分词的构成:
1. 规则动词的过去分词和过去式一致；2. 不规则动词的变化形式没有规律，需要记忆。（详见教材最后一页)常用的有：
finish--live--carry--stp—
finished--finished
lived--lived
carried--carried
stpped--stpped
be-was, were-been see-saw-seenleave-letf-left bring-brught-brughtbuy-bught-bught take-tk-takenfind-fund-fund make-made-made have-had-had win-wn-wn g-went-gne give-gave-givenkeep-kept-kept begin—began--begund/des-did-dne read—read--read
Wh can say the past tense and pastparticiple quickly?
Write the frms f the past tense and past participle:buy _______ ______ carry ___________ ____________ see______ ______ decide ___________ ____________ find ______ ______ leave ______ ______ tell ______ _____ g______ ______ take______ ______ wrk _____ ______ ____________ start ___________ ____________ stp ___________ ____________
bught bught
saw seen
fund fund
left left
tld tld
went gne
tk taken
carried carried
decided decided
wrked wrked
started started
stpped stpped
现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作，强调的是现在的情况，不能和表示过去的时间状语连用（如yesterday， last Sunday 等）。
一般过去时只表示过去的动作或状态，和现在不发生关系（即动作或状态在现在已经结束），它可以和表示过去的时间状语连用。
现在完成时与一般过去时的区别：
have / has + V过去分词
—______ yu ___ yur hmewrk yet ? —Yes . I _____ it an hur ag . Ａ. Did ; d ; finished Ｂ. Have ; dne ; finished Ｃ. Have ; dne ; have finished Ｄ. will ; d ; finish
 —Tm, ______ yu ever ______ that new film? —Yes. I ______ it a week ag. A. have; seen; saw               B. have; seen; see C. d; see; see                    D. had; seen; saw (四川广安)
四、现在完成时的提示词:
以前(befre) 从来不(never) 出现，最近(recently) 曾经(ever)一(nce) 两遍(twice),自从(since) 长达(fr一段)， (already)已经(yet)很明显。
注：1.already常用于肯定句中，放在have/has后或句末。yet常用于疑问句或否定句中，可置于句首或句末。
注：2. since +（1）(过去的)月份/年份，例如：since 1998. since +（2） 一段时间+ag, 例如：since three years ag. since +（3）一般过去时从句 ,例如： since he came here.
1. I have lived here fr 9 years.2. Have yu ever seen Mr. Green’s wife?3. We have never been there befre.4. Has Tm had his lunch yet?5. Mary has read the bk twice.6. He has already finished his hmewrk .7.I have had this bike since three years ag. 8.She has wned the ty bear since she was a baby.
1. — China develps s fast. — That’s true. It _____ a lt already. (安徽芜湖) A. changesB. changedC. will change D. has changed 2、Zha Lan ______already ______in this schl fr tw years . Ａ. was ; studying Ｂ. will ; study Ｃ. has ; studied Ｄ. are ; studying
3、We ______ Xia Li since she was a little girl . 　Ａ. knw Ｂ. had knwn Ｃ. have knwn Ｄ. knew 4、Harry Ptter is a very nice film . I_______ it twice . Ａ. will see Ｂ. have seen Ｃ. saw Ｄ.see
5. —Is Richard still living here? —N, he ______ t Paris already. A. had mved          B. mved  C. will mve            D. has mved (四川绵阳)
6. —The Amazing Spider Man 2 is n these days. It’s fantastic.  —Really? But I ______ it yet. A. didn’t see            B. wn’t see C. haven’t seen       D. am nt seeing ( 浙江湖州)
7. —What are yu ging t d this Sunday? — I _____ yet. (绍兴市) A. wn’t decide B. didn’t decide C. haven’t decided D. dn’t decide
 五、 关于瞬间动词的记忆
（1） 来(cme)、去(g)、到达(get t/reach/ arrive at/in)、离开(leave) 、与 死亡（die) （2） 买(buy)、卖(sell)、开(pen)、关(clse)、（3）开始(begin/start)、参加(jin)、变成(becme) 与 完成(finish)
1.瞬间动词又叫非延续性动词。初中阶段 常见的瞬间动词有：
2. 瞬间动词可以用于现在完成时态中，但不可以接一段时间（否定句可以）。 
The dg has died .
The dg has died fr tw weeks.
The dg has been dead fr tw weeks .
若要接一段时间，则须改为延续性动词或表示状态的词 
die----be dead
buy-----have/keep
leave----be away
brrw----have/keep
begin/start-----be n
cme back----be back
jin----be a member f
pen----be pen
1.His uncle_____fr mre than 9 years. A. has cme here B. has started t wrk C. has lived there D. has left the university
2、The ld man_______ last year. He ______________fr a year. (die) （用所给动词的适当形式填空）
has been dead
3、Miss Ga left an hur ag. (同义句转换) Miss Ga ____ ______ _______ fr an hur .
has been away
1.—Hw lng have yu buy yur bike？ —Fr mre than 9 has left her hmetwn since she was a baby.
have been t与have gne t 的区别
1. have (has) been t意为“曾经去过某地”，表示现在已经不在那里了。如：
I’ve just been t the pst ffice. 我刚才去邮局了。Have yu ever been t Kunming? 你曾经去过昆明吗？I’ve been t Beijing three times. 我去过北京三次。
2. have (has) gne t 意为“到某地去了”，表示到了某地或正在去某地的途中。总之说话时该人不在现场，一般不用第一、第二人称代词作句子的主语。如： —Where is Tm? 汤姆在哪里？ — He has gne t the bkshp. 他到书店去了。
( )【 湖北黄冈】 —Where is Tm? We can’t find him anywhere. — Perhaps he _____ hme. A. has gne B. is ging C. went D. was ging
Miss Green isn't in the ffice.she_____ t the library . Ａ. has gne Ｂ. went Ｃ.will g Ｄ. has been
The Present perfect tense
Practice makes perfect.
Yu must: Finish the paper test.