外研版（2019）选择性必修一Unit 5 Revealing nature Period 2 Using language 课件（共28张）
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| 名称 | 外研版（2019）选择性必修一Unit 5 Revealing nature Period 2 Using language 课件（共28张） |  | |
| 格式 | zip | ||
| 文件大小 | 1.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-08-28 13:28:40 | ||
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(共28张PPT)
Period 2
Using Language
Uning language
Step 1. When to use Past perfect
Step 2. The difference between
past perfect
present perfect
and simple past
Step 3. Exercises
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
Using Language
1. n.特征，特性
2. v.减少
3. n.陆龟
4. v.责怪，指责；把……归咎于
5. n.山羊
6. 源于……的，原产于……
7. adj.原始的，低等的
8. adv. 遍及全世界
characteristic
decline
tortoise
blame
goat
be native to
primitive
worldwide
单
词
清
障
Using Language
8. adj.巨大的，特大的
9. 巨型陆龟
10. n.红树（一种热带树木）
11. n.鬣蜥(一种大型热带美洲蜥蜴)
12. adj.梳状的
13. n.(动物的)刺，刺毛
单
词
清
障
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
giant
giant tortoise
mangtove
iguana
comb-like
giant
Using Language
原文再现
Darwin suspected that the finches had evolved from a common ancestor,...
In this sentence the two actions both hanppened in the past, Action B happened first, Action A happened later. In this situation, past perfect is used to describe Action B and simple past is used to describe Action A .
Action A
happening first
happening later
Action B
Uning language
Many people refused to believe that living things, including humans, had evolved from lower forms of life.
原文再现
happening later
happening first
The past perfect is a verb tense which is used to show that an action took place once or many times before another action / point in the past.
Uning language
Past Perfect Forms
The past perfect is formed using had + past participle. Questions are indicated by inverting the subject and had. Negatives are made with had not.
Statement: You had studied English before you moved to New York.
Question: Had you studied English before you moved to New York
Negative: You had not studied English before you moved to New York.
Uning language
The past perfect expresses the idea that something occurred before another action in the past. It can also show that something happened before a specific time in the past.
past perfect
simple past
Uning language
Examples
1. I ____________(not see) such a beautiful beach before I went to Kauai.
2. I did not have any money because I ________(lose) my wallet.
3. Tony knew Istanbul so well because he ___________(visit) the city several times.
4. ______ Susan _______(study) Thai before she moved to Thailand
5. She only understood the movie because she _________(read) the book.
6. Kristine _____________(never be) to an opera before last night.
7. We were not able to get a hotel room because we ______________(not book) in advance.
8. A: _______ you ever _______(visit) the U.S. before your trip in 2006
B: Yes, I ____________ to the U.S. once before.
hadn't seen
had lost
had visited
studied
Had
had read
had never been
hadn't booked
Had
visited
had been
Uning language
USE 2 Duration Before Something in the Past (Non-Continuous Verbs)
With non-continuous verbs (simple past), we use the past perfect to show that something started in the past and continued up until another action (non-continuous verbs) in the past.
simple past
(non-continuous
past perfect duration
Uning language
Examples
1. We had had that car for ten years before it broke down.
2. By the time Alex finished his studies, he had been in London for over eight years.
3. They felt bad about selling the house because they had owned it for more than forty years.
non-continuous verb
past perfect duration
non-continuous verb
past perfect duration
past perfect duration
non-continuous verb
The words "live," "work," "teach," and "study" are sometimes used in this way even though they are NOT non-continuous verbs.
Uning language
ADVERB PLACEMENT
Adverbs such as always, only, never, ever, still and just are usually placed between had and past participle.
Examples:
You had previously studied English before you moved to New York.
Had you previously studied English before you moved to New York
Uning language
ACTIVE / PASSIVE
Active voice: had + past participle
Passive voice: had + been + past participle
Active:
George had repaired many cars before he received his mechanic's license.
Passive:
Many cars had been repaired by George before he received his mechanic's license.
Uning language
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. The can help you decide the use of tenses.
a. Natural disasters led to food shortages in the 1960s.
b. Yuan Longping began to do research on hybrid rice.
c. Yuan Longping developed a better type of rice.
Yuan Longping _____________to do research on hyarid rice because natural disasters______________food shortages in the 1960s. In the end, he ____________ a better type of rice.
began
had led to
developed
Uning language
a. Gregor Mendel chose to study pea plants because their characteristics
were easy to control.
b. Gregor Mendel made important discoveries about genetics.
c. Gregor Mendel died in 1884
Gregor Mendel ___________study pea plants because their characteristics were easy to control. By the tirme of his death in 1894, he ___________________discoveries about genetics.
chose to
had made important
Uning language
Complete the online encyclaepia entry eith the correct form of the words in the box.
compete decline eat
live introduce arrive
Lonesome George was the last Pinta Island torroise. He died in 2012. After George's death, the Pinta Island tortoise was declared exinct.
The extinction of the Pinta Island tortoise is blamed on humans. Before humans __________on the island, the species ___________in islation and ___________plants that naturally grew there. George was discovered many years after their arrival, and by then humans ___________new species that _________ for the food the tortoises ate. After goats in particular had been brought to the island, the Pinta Island tortoise popuation____________. Eventually only Geoge remained.
arrived
had lived
had eaten
introduced
competed
declined
Uning language
过去完成时与一般过去时的区别
1. 时间状语不同：过去完成时在时间上 强调“过去某个时间之前”；而一般过去
时只强调过去某一特定的时间。
They had arrived at the station by ten yesterday.
They arrived at the station at ten yesterday.
Uning language
2.过去完成时表示过去的过去，经常和一般 过去式一起使用。表示过去发生的一
先一后的两个动作，先发生的动作用过去完成时，后发生的动作用一般过去时。
She had never seen a bear before she moved to Alaska.
George had repaired many cars before he received his mechanic's license.
Uning language
I can't believe I __________(get) that apartment. I __________(submit) my application last week, but I didn't think I had a chance of actually getting it. When I __________ (show) up to take a look around, there were at least twenty other people who__________ (arrive) before me. Most of them ________________(fill, already) out their applications and were already leaving. The landlord said I could still apply, so I did.
用正确的时态填空
have got
submitted
showed
had arrived
had already filled
Uning language
I __________(try) to fill out the form, but I couldn't answer half of the questions. They __________(want) me to include references, but I didn't want to list my previous landlord because I __________(have) some problems with him in the past and I knew he wouldn't recommend me. I __________(end) up listing my father as a reference.
It was total luck that he __________(decide) to give me the apartment. It turns out that the landlord and my father__________ (go) to high school together. He decided that I could have the apartment before he__________ (look) at my credit report. I really lucked out!
wanted
tried
had had
ended
decided
turned
looked
Uning language
过去完成时与现在完成时的区别
现在完成时表示的动作发生在过去，以now的时间为基点，但侧重对now产生的结果或造成的影响；过去完成时则是一个相对的时态，以过去时间为基点，它所表示的动作不仅发生在过去，更强调“过去的过去”，只有和过去某时或某动作相比较时，才用到它。
如：
到目前为止我已经学会了 1000 个英语单词。
到那时为止我已经学会了 1000 个英语单词。
— I'm sorry to keep you waiting. — Oh, not at all. I ___________(be) here only a few minutes.
I have learned 1000 English words by now.
I had learned 1000 English words till then.
have been
Uning language
1. When I __________(arrive) home last night, I discovered that Jane __________(prepare)
a beautiful candlelight dinner.
2. Since I began acting, I __________(perform) in two plays, a television commercial and
a TV drama. However, I ____________________(speak, never even) publicly before I
came to Hollywood in 2010.
3. By the time I got to the office, the meeting _______________(begin, already) without
me. My boss __________(be) furious with me and I __________(be) fired.
用正确的时态填空
arrived
had prepared
had even never spoken
had already begun
was
was
Uning language
4. When I __________ (turn) the radio on yesterday, I __________(hear) a song that was
popular when I was in high school. I _____________ (hear, not) the song in years, and it
(bring) back some great memories.
5. Last week, I __________ (run) into an ex-girlfriend of mine. We _____________ (see,
not) each other in years, and both of us _____________ (change) a great deal. I
___________ (enjoy) talking to her so much that I _____________(ask) her out on a
date. We are getting together tonight for dinner.
用正确的时态填空
turned
heard
haven't heard
ran
haven't seen
have changed
enjoyed
asked
Uning language
6. When Jack __________(enter) the room, I_________________(recognize, not) him
because he __________(lose) so much weight and __________(grow) a beard. He
looked totally different!
7. The Maya established a very advanced civilization in the jungles of the Yucatan;
however, their culture _____________________(disappear, virtually) by the time
Europeans first __________(arrive) in the New World.
8. I __________(visit) so many beautiful places since I __________(come) to Utah.
Before moving here, I ________________(hear, never) of Bryce Canyon, Zion, Arches,
or Canyonlands.
用正确的时态填空
entered
didn't regognize
have lost
have grown
had virtually dsappeared
arrived
have visited
came
had never heard
Uning language
1. She said that she __________(see) the film before.
2. After he _____________ his homework, he went to bed.
3. I met Wang Tao in the street yesterday. We __________ each other since he went
to Beijing.
4. I _____________ reading the novel by nine o'clock last night.
5. It was the third time that he __________(be) out of work that year.
6. I didn’t know a thing about the verbs, for I ____________(not study)my lesson.
考试链接
have seen
had finished
hadn't seen
had finished
had been
hadn't studied
Uning language
Complete the paragraph with the correct form of the words and expressions
ancestor scientific be native to primitive
habitat appearance be home to ecosystem
The Galapagos Islands are renowned worldwide for their unique biodiverity. The Giant Tortoise Reserve on Santa Cruz ______________several species of giant tortoise that ___________the Galapagos Isand. The Island is also home to the Charles Darwin Research Station, where ___________studies are carried out.
Mangroves are one of the coastal plants that grow on Isabela. They serve as the __________for various birds and fish and are very important to the __________.
Iguanas can be found on San Cristobal. They hae a very special__________, with comb-like spines on their back. There is evidence that all the different iguanas have developed from more___________ones and share a common __________.
scientific
is home to
are native to
habitat
ecosystem
appearance
ancestors
primitive
See
you
next
time
感谢您的观看
Period 2
Using Language
Uning language
Step 1. When to use Past perfect
Step 2. The difference between
past perfect
present perfect
and simple past
Step 3. Exercises
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
Using Language
1. n.特征，特性
2. v.减少
3. n.陆龟
4. v.责怪，指责；把……归咎于
5. n.山羊
6. 源于……的，原产于……
7. adj.原始的，低等的
8. adv. 遍及全世界
characteristic
decline
tortoise
blame
goat
be native to
primitive
worldwide
单
词
清
障
Using Language
8. adj.巨大的，特大的
9. 巨型陆龟
10. n.红树（一种热带树木）
11. n.鬣蜥(一种大型热带美洲蜥蜴)
12. adj.梳状的
13. n.(动物的)刺，刺毛
单
词
清
障
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
giant
giant tortoise
mangtove
iguana
comb-like
giant
Using Language
原文再现
Darwin suspected that the finches had evolved from a common ancestor,...
In this sentence the two actions both hanppened in the past, Action B happened first, Action A happened later. In this situation, past perfect is used to describe Action B and simple past is used to describe Action A .
Action A
happening first
happening later
Action B
Uning language
Many people refused to believe that living things, including humans, had evolved from lower forms of life.
原文再现
happening later
happening first
The past perfect is a verb tense which is used to show that an action took place once or many times before another action / point in the past.
Uning language
Past Perfect Forms
The past perfect is formed using had + past participle. Questions are indicated by inverting the subject and had. Negatives are made with had not.
Statement: You had studied English before you moved to New York.
Question: Had you studied English before you moved to New York
Negative: You had not studied English before you moved to New York.
Uning language
The past perfect expresses the idea that something occurred before another action in the past. It can also show that something happened before a specific time in the past.
past perfect
simple past
Uning language
Examples
1. I ____________(not see) such a beautiful beach before I went to Kauai.
2. I did not have any money because I ________(lose) my wallet.
3. Tony knew Istanbul so well because he ___________(visit) the city several times.
4. ______ Susan _______(study) Thai before she moved to Thailand
5. She only understood the movie because she _________(read) the book.
6. Kristine _____________(never be) to an opera before last night.
7. We were not able to get a hotel room because we ______________(not book) in advance.
8. A: _______ you ever _______(visit) the U.S. before your trip in 2006
B: Yes, I ____________ to the U.S. once before.
hadn't seen
had lost
had visited
studied
Had
had read
had never been
hadn't booked
Had
visited
had been
Uning language
USE 2 Duration Before Something in the Past (Non-Continuous Verbs)
With non-continuous verbs (simple past), we use the past perfect to show that something started in the past and continued up until another action (non-continuous verbs) in the past.
simple past
(non-continuous
past perfect duration
Uning language
Examples
1. We had had that car for ten years before it broke down.
2. By the time Alex finished his studies, he had been in London for over eight years.
3. They felt bad about selling the house because they had owned it for more than forty years.
non-continuous verb
past perfect duration
non-continuous verb
past perfect duration
past perfect duration
non-continuous verb
The words "live," "work," "teach," and "study" are sometimes used in this way even though they are NOT non-continuous verbs.
Uning language
ADVERB PLACEMENT
Adverbs such as always, only, never, ever, still and just are usually placed between had and past participle.
Examples:
You had previously studied English before you moved to New York.
Had you previously studied English before you moved to New York
Uning language
ACTIVE / PASSIVE
Active voice: had + past participle
Passive voice: had + been + past participle
Active:
George had repaired many cars before he received his mechanic's license.
Passive:
Many cars had been repaired by George before he received his mechanic's license.
Uning language
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. The can help you decide the use of tenses.
a. Natural disasters led to food shortages in the 1960s.
b. Yuan Longping began to do research on hybrid rice.
c. Yuan Longping developed a better type of rice.
Yuan Longping _____________to do research on hyarid rice because natural disasters______________food shortages in the 1960s. In the end, he ____________ a better type of rice.
began
had led to
developed
Uning language
a. Gregor Mendel chose to study pea plants because their characteristics
were easy to control.
b. Gregor Mendel made important discoveries about genetics.
c. Gregor Mendel died in 1884
Gregor Mendel ___________study pea plants because their characteristics were easy to control. By the tirme of his death in 1894, he ___________________discoveries about genetics.
chose to
had made important
Uning language
Complete the online encyclaepia entry eith the correct form of the words in the box.
compete decline eat
live introduce arrive
Lonesome George was the last Pinta Island torroise. He died in 2012. After George's death, the Pinta Island tortoise was declared exinct.
The extinction of the Pinta Island tortoise is blamed on humans. Before humans __________on the island, the species ___________in islation and ___________plants that naturally grew there. George was discovered many years after their arrival, and by then humans ___________new species that _________ for the food the tortoises ate. After goats in particular had been brought to the island, the Pinta Island tortoise popuation____________. Eventually only Geoge remained.
arrived
had lived
had eaten
introduced
competed
declined
Uning language
过去完成时与一般过去时的区别
1. 时间状语不同：过去完成时在时间上 强调“过去某个时间之前”；而一般过去
时只强调过去某一特定的时间。
They had arrived at the station by ten yesterday.
They arrived at the station at ten yesterday.
Uning language
2.过去完成时表示过去的过去，经常和一般 过去式一起使用。表示过去发生的一
先一后的两个动作，先发生的动作用过去完成时，后发生的动作用一般过去时。
She had never seen a bear before she moved to Alaska.
George had repaired many cars before he received his mechanic's license.
Uning language
I can't believe I __________(get) that apartment. I __________(submit) my application last week, but I didn't think I had a chance of actually getting it. When I __________ (show) up to take a look around, there were at least twenty other people who__________ (arrive) before me. Most of them ________________(fill, already) out their applications and were already leaving. The landlord said I could still apply, so I did.
用正确的时态填空
have got
submitted
showed
had arrived
had already filled
Uning language
I __________(try) to fill out the form, but I couldn't answer half of the questions. They __________(want) me to include references, but I didn't want to list my previous landlord because I __________(have) some problems with him in the past and I knew he wouldn't recommend me. I __________(end) up listing my father as a reference.
It was total luck that he __________(decide) to give me the apartment. It turns out that the landlord and my father__________ (go) to high school together. He decided that I could have the apartment before he__________ (look) at my credit report. I really lucked out!
wanted
tried
had had
ended
decided
turned
looked
Uning language
过去完成时与现在完成时的区别
现在完成时表示的动作发生在过去，以now的时间为基点，但侧重对now产生的结果或造成的影响；过去完成时则是一个相对的时态，以过去时间为基点，它所表示的动作不仅发生在过去，更强调“过去的过去”，只有和过去某时或某动作相比较时，才用到它。
如：
到目前为止我已经学会了 1000 个英语单词。
到那时为止我已经学会了 1000 个英语单词。
— I'm sorry to keep you waiting. — Oh, not at all. I ___________(be) here only a few minutes.
I have learned 1000 English words by now.
I had learned 1000 English words till then.
have been
Uning language
1. When I __________(arrive) home last night, I discovered that Jane __________(prepare)
a beautiful candlelight dinner.
2. Since I began acting, I __________(perform) in two plays, a television commercial and
a TV drama. However, I ____________________(speak, never even) publicly before I
came to Hollywood in 2010.
3. By the time I got to the office, the meeting _______________(begin, already) without
me. My boss __________(be) furious with me and I __________(be) fired.
用正确的时态填空
arrived
had prepared
had even never spoken
had already begun
was
was
Uning language
4. When I __________ (turn) the radio on yesterday, I __________(hear) a song that was
popular when I was in high school. I _____________ (hear, not) the song in years, and it
(bring) back some great memories.
5. Last week, I __________ (run) into an ex-girlfriend of mine. We _____________ (see,
not) each other in years, and both of us _____________ (change) a great deal. I
___________ (enjoy) talking to her so much that I _____________(ask) her out on a
date. We are getting together tonight for dinner.
用正确的时态填空
turned
heard
haven't heard
ran
haven't seen
have changed
enjoyed
asked
Uning language
6. When Jack __________(enter) the room, I_________________(recognize, not) him
because he __________(lose) so much weight and __________(grow) a beard. He
looked totally different!
7. The Maya established a very advanced civilization in the jungles of the Yucatan;
however, their culture _____________________(disappear, virtually) by the time
Europeans first __________(arrive) in the New World.
8. I __________(visit) so many beautiful places since I __________(come) to Utah.
Before moving here, I ________________(hear, never) of Bryce Canyon, Zion, Arches,
or Canyonlands.
用正确的时态填空
entered
didn't regognize
have lost
have grown
had virtually dsappeared
arrived
have visited
came
had never heard
Uning language
1. She said that she __________(see) the film before.
2. After he _____________ his homework, he went to bed.
3. I met Wang Tao in the street yesterday. We __________ each other since he went
to Beijing.
4. I _____________ reading the novel by nine o'clock last night.
5. It was the third time that he __________(be) out of work that year.
6. I didn’t know a thing about the verbs, for I ____________(not study)my lesson.
考试链接
have seen
had finished
hadn't seen
had finished
had been
hadn't studied
Uning language
Complete the paragraph with the correct form of the words and expressions
ancestor scientific be native to primitive
habitat appearance be home to ecosystem
The Galapagos Islands are renowned worldwide for their unique biodiverity. The Giant Tortoise Reserve on Santa Cruz ______________several species of giant tortoise that ___________the Galapagos Isand. The Island is also home to the Charles Darwin Research Station, where ___________studies are carried out.
Mangroves are one of the coastal plants that grow on Isabela. They serve as the __________for various birds and fish and are very important to the __________.
Iguanas can be found on San Cristobal. They hae a very special__________, with comb-like spines on their back. There is evidence that all the different iguanas have developed from more___________ones and share a common __________.
scientific
is home to
are native to
habitat
ecosystem
appearance
ancestors
primitive
See
you
next
time
感谢您的观看