外研版 (2019)选择性必修 第一册Unit 6 Nurturing nature试讲课备课ppt课件

这是一份外研版 (2019)选择性必修 第一册Unit 6 Nurturing nature试讲课备课ppt课件，共22页。PPT课件主要包含了原文再现，高考链接等内容，欢迎下载使用。

Uning language
Step 1. When t use Present perfect cntinus
Step 2. The difference between present perfect & present perfect cntinuus
Step 3. Cmprehensive Exercises
Starting ut
A. Wild animals such as these Tibetan antelpe have nw been using these passages fr years.
Which f these statements are true abut the sentence?A. Wild animal started using these passages in the past.B. Wild animals used these passags nly nce.C. Wild animals still use these passages nw.D. Wild animals prbably cntinue t use thses passages in the future.
Using language
B. I knw it, we have reached Tanggula Statin.
Which f these statements are true abut the sentence?A. reached the statin befre the mment f speaking.B. the fllwing jurney we will reach ther statins.C. the fllwing jurney we will reach the statin repeatedly.
What's the difference between the expressins in the tw sentences?
Sentence A is in present perfect cntinus, which shws that smething ①started in the past, ②has cntinued up until nw and ③will cntinue in the future.
Sentence B is in present perfect, which shws that smething ①started in the past and cntinues in the present r ②smething that happened in the past but is imprtant in the present
现在完成进行时更注重动作的持续性，而现在完成时更注重动作产生的影响和目前的状态
Lk at the charts and make sentences using the present perfect cntinuus tense.
Wded areas have been increasing since 20 years ag.
10 years ag
Desert areas
Desert areas have been decreasing since 20 years ag.
Butterfly ppulatin
Butterfly ppulatin has been grwing since 20 years ag.
Undesrtanding ideas
Change each sentence int a PRESENT PERFECT CONTINOUS sentence: Example: I started playing basketball tw years ag.
1. Jim started playing ftball three years ag. Jim _______________ ftball fr three years. 2. My brther started running tw years ag. My brther _______________fr tw years. 3. We started learning English three years ag. We _______________ English fr three years.
I have been playing basketball fr tw years.
has been playing
has been running
have been learning
4. My neighbr started living here ne year ag. My neighbr _________________here fr ne year. 5. I started watching this mvie ne hur ag. I _________________this mvie fr ne hur. 6. They started wrking fur hurs ag. They _________________fr fur hurs. 7. My sister started sleeping ne hur ag. My sister _________________fr ne hur.
has been living
have been watching
have been wrking
has been sleeping
8. The teacher started talking 30 minutes ag. The teacher _________________ fr 30 minutes. 9. My sister and her friend started listening t music 20 minutes ag. My sister and her friend __________________ t music fr 20 minutes. 10. The children started playing tw hurs ag. The children _________________ fr tw hurs.
has been talking
have been listening
have been playping
Talk abut hw the envirnment has changed. Use the present perfect cntinus tense where apprpriate.
Ecturism is a type f turism that cnserves the envirnment. It encurages peple t be respnsible travellers and invlves educating them abut the natural wrld. Fr cuntries such as Csta Rica, Keya and Nepal, ecturism is an imprtant part f the cuntry. Sme ecturism hlidays invlve vluntary wrk, such as planting trees r cunting endangered animals.
It has been encuraging peple t be respnsible travellers and educating them abut the natural wrld.
have been invlving
1. 这些年来,他们一直为我们杂志写稿。2. 从下午四点钟到现在,她一直在写信。3. 我们一直在这所学校学习了三年。4. 你看了多久电视了?
翻译练习：使用现在完成进行时
Hw lng have yu been watching TV?
We have been studying in this schl fr three years.
She has been writing the letter since fur ”clck in the afternn.
All these years they have been cntributing articles t ur magazine.
1. n.经济2. n.（热带）丛林3. v.干扰，扰乱4. n.散发物，排放物5. n.经营者6. n. （动植物或古旧建筑物的）保护工作者；环境保护主义者
______________________________________________________________________________
cnservatinist
1. 生态友好型2. 为新产业创造机会3. 打扰野生动植物4. 帮助当地经济5. 碳排放6. 耗尽自然资源
ec-friendly
create pprtunities fr new businesses
disturb the wildlife
help the lcal ecnmy
carbn emissin
use up natural resurces
Cmplete the passage with the expressins in the bs.
nt ec-friendly create pprtunities fr new businessesdisturb the wildifehelp the lcal ecnmyhigher carbn emissinprvide mre jbsuse up natural resurces
As turism develps, peple are becming increasingly cncerned abut the envirnment. Here in ur city, there is a heated discussin abut whether a htel shuld be built at White Beach. The wner f the cmpany thinks the htel wuld attract mre turists, which will_____________________ and ________________. Hwever, the lcal peple wrry that building the htel is ________________ and will__________________, in partlar the turtles which lay their eggs n White Beach. But they als admit that building the htel will__________________________________ fr peple living in the area. Even thugh the wner f the cmpany guarantees that the design will be in hmny with its beautiful surrundings, the lcal peple are still cncerned that the htel may ______________________. Increase turist numbers will als mean mre cars and aerplanes, which in turn means_____________________.
help the lcal ecnmy
prvide mre jbs
nt ec-friendly
disturb the wildlife
use up natural resurces
higher carbn emissin
1.(2020·和平·天津一中模) Mary's brther has cme back hme frm Lndn where he________fr three years as a visiting schlar. A. stayedB.has stayedC.staysD. had stayed2. (2020·天津高考) —The machine is wrking again! —Yes, it brke dwn yesterday, but it_____. A.has been fixed B. is being fixed C.had been fixedD. wuld be fixed
过去发生的事对现在的状态很重要
3. (2020江苏高考) Instead f geting dwn t a new task as I______, he examined the previus wrk again. A.had expected B.have expected C.wud expect D.expect 4. (2020江苏高考) If yu lk at all sides f the situatin, yu'll find prbably a slutin that_______everyne. A. suit B.suited C. suitsD.has suited5. (2020黑龙江模） —Did Linda see the traffic accident? —N, n sner ______than it happened. A. had she gneB. she had gneC. has she gneD. shehas gne
只表示现在，与过去无关
6. (2020天津高考) The number f medical schls reached 18 in the early 1990s and _______ arund that level since. A. are remainingB. have remainedC. is remaining D. has remained7. (天津红桥高三模) The number f peple, wh have access t their wn cars, ________ sharply in the past decades. A. rseB. is risingC. have risenD has risen
See yu next time