人教版 (2019)选择性必修 第二册Unit 3 Food and Culture教学演示ppt课件

这是一份人教版 (2019)选择性必修 第二册Unit 3 Food and Culture教学演示ppt课件，共29页。PPT课件主要包含了Drills， Drills，Homework等内容，欢迎下载使用。

01 Definitin f the Past Perfect Tense
02 Identificatin f the Past Perfect Tense
03 Differences between the Past Perfect Tense and ther tenses
04 Applicatin
Definintin f the Past Perfect Tense
Sense the usage f the past perfect tense
had never happened
1. We use the past perfect tense t express a past actin(A) finished befre anther actin(B) in the past.
2. We als use the past perfect tense t shw that smething(A) happened befre a specific time(B) in the past.
Frmula f the Past Perfect Tense
had nt/hadn't + dne
Had + [subject] + dne…?
[questin wrd] + had + [subject] + dne…?
had been dne
had nt/hadn’t been dne
Had + [subject] + been dne…?
[questin wrd] + had + [subject] + been dne?
I think the missin cmmand had prepared ______________ .
① First: The waiter gave my seat t smene else. Next: I came back. ② First: The thief ran away. Next: the plice arrived.③ First: The fire gt ut f cntrl. Next: The firetruck drve up.
The waiter had given my seat t smene else when I came back.
The thief had run away by the time the plice arrived.
The fire had gtten ut f cntrl when the firetruck drve up.
Identificatinf the Past Perfect Tense
1. by，befre，when，until, since+ a past actin/time
*Dinner had been served by 6:00 p.m yesterday evening.
by + past time
*Amy had cked their dinner by the time her husband came back frm wrk.
by the time + clause ( past actin)
2. already，yet, just
*I had just eaten my lunch when she phned me.
*I arrived very late at the party. All my friends had already gne hme.
3.The cntext:
An actin had happened befre a past actin/time.
* The Titanic sank because it had been badly damaged by an iceberg.
had been badly damaged
(1) had + hped/wished/expected/thught/intended/meant/suppsed:
*I had meant t g n a trip with yu, but I was busy with wrk then.
Actually, I didn’t g n a trip with yu.
*I had intended t see yu, but I had t lk after my little daughter at that mment.
Actually, I didn’t see yu.
Fr an event that didn’t happen actually. It’s in unreal situatins.
(2) It was the first/secnd… time + (that) sb. had dne sth.
*It is the first time that Jasn__________ (make) the salad.
*It was the first time that Jasn__________ (make) the salad.
(3) “一……就……”： N sner had sb. dne than sb. did sth./ Hardly/Scarcely/Barely had sb. dne when sb. did sth.
*Hardly _____we _____ (leave) the huse when it began t rain.
* N sner _____she _____ (get) ut f the building than it cllasped in an instant.
Differences between the Past Perfect Tenseand ther tenses
1. the Past Perfect Tense VS the Past Tense
* Mary (arrive) at the cafe by six ’clck yesterday.* Mary at the cafe at six ’clck yesterday.
an actin that finished befre anther actin in the past.
an actin that happened in the past
had arrived
the Past Perfect Tense
an actin that finished befre anther actin in the past r anther past time.
an actin that began in the past, and might cntinue t the present
the Present Perfect Tense
2.the Past Perfect Tense VS the Present Perfect Tense
* David (wrk) with tw scientists in the field f btany befre he was awarded the Nbel Prize.
* Since he graduated frm Harvard University, David (wrk) with tw scientists in the field f btany.
（2020·浙江卷）阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。 Sme time after 10,000 BC，peple made the first real attempt t cntrl the wrld they lived 56 ，thrugh agriculture. Over thusands f years，they began t depend less n 57 culd be hunted r gathered frm the wild，and mre n animals they had raised and crps they had swn. Farming prduced mre fd per persn ___58___ hunting and gathering，s peple were able t raise mre children. And，as mre children were brn，mre fd 59 (need). Agriculture gave peple their first experience f the pwer f technlgy 60 (change)lives. By abut 6000 BC，peple 61 (discver) the best crps t grw and animals t raise. Later，they learned t wrk with the 62 (seasn)，planting at the right time and，in dry areas， 63 (make)use f annual flds t irrigate(灌溉)their fields. This style f farming lasted fr quite a lng time. Then，with ___64___ rise f science，changes began. New methds 65 (mean) that fewer peple wrked in farming. In the last century r s，these changes have accelerated. New pwer machinery and artificial fertilizers(化肥)have nw ttally transfrmed a way f life that started in the Stne Age.
【Keys】56. in 57. what 58. than 59. was needed 60. t change 61. had discvered 62. seasns 63. making 64. the 65. meant
had discvered
(1) When I __________(arrive) hme last night, I discvered that Jane ___________(prepare) a beautiful candlelight dinner.(2) Since I began acting, I (perfrm) in tw plays. Hwever, I ______________ (speak, never) publicly befre I came t Hllywd in 2010.(3) By the time I gt t the ffice, the meeting_______________ (begin, already) withut me.
had prepared
have perfrmed
had never spken
had already begun
pastperfect tense
present perfect tense
1. Sam frze.2. The kitchen was in an unbelievable mess.3. They became hmeless.4. The girl felt prud.
Example: Claire lked very happy when I saw her last week.
She had released her first album.
He had accidently brken int a tiger’s cave.
The cat had jumped up and dwn in it.
Their huses had been destryed in a severe earthquake.
She had prepared a delicate cake fr her mm n Mther’s Day.
2. Create yur versin abut the lve stry between Jake and Ann, which is an embarrassing yet happy-ending stry. Use the past perfect tense when necessary.
4.Share yur versin.
Picture 1: By 2 p.m., Jack had walked in the frest fr ver five hurs. Suddenly, he heard a big nise. He turned t find a bear staring at him. Grrrawrrrrrrr! The bear rared with rage! Its dripping jaws were pen wide. Withut hesitatin, Jack climbed nt a tree t run fr his life. Befre he used his bear spray t drive away the bear, the beast had pinned him against the tree and held him there fr abut fifteen minutes.
Picture 3: It was the first time that Jasn had paid a visit t a well-knwn sandy beach with his family. They had hped t lie n the sft beach t be bathed in the csy sunshine fr a whle afternn. Hwever, n sner had they lain n the warm and cmfrtable beach than they saw a huge wave dash t them. A tsunami! S vilent was the tsunami that it nearly swallwed everything which was visible. Withut hesitatin, they squeezed every unce f their strength t run. Frtunately, after a narrw escape, they all survived.