外研版（2019）选择性必修第一册 Unit3 Faster, higher, stronger-Using language课件（16张PPT）
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| 名称 | 外研版（2019）选择性必修第一册 Unit3 Faster, higher, stronger-Using language课件（16张PPT） |  | |
| 格式 | pptx | ||
| 文件大小 | 174.4KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-02-23 11:41:00 | ||
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文档简介
(共16张PPT)
I
Grammar
过去完成时的形式变化
1、肯定句：主语+had+过去分词+其他成分
I had learnt Japanese before I went to Japan.
2、否定句：主语+had+not+过去分词+其他成分
I had not learnt Japanese before I went to Japan.
3、一般疑问句：Had+主语+过去分词+其他成分
Had you learnt Japanese before you went to Japan
4、特殊疑问句：特殊疑问词+had+主语+过去分词+其他成分
What had you learnt before you went to Japan
表示在过去的某一时间或某一动作之前已经完成的动作或存在的状态。它表示句子中描述的动作发生在“过去的过去”。
定义
I had finished reading the novel by nine o’clock last night.
昨天晚上9点钟前，我已经读完了这本小说。
past perfect
注：过去完成时一定有一个表示过去的参照点。
past perfect
过去完成时的基本用法
By nine o'clock last night, we ____________(finish) most of the work.
到昨晚9点钟，我们已经完成了大部分的工作。
Before we got to the train station, the train had already left.
我们到达火车站之前，火车就已经离开了。
1. 常与时间状语“by+表示过去的时间”；
when/before/after+表示过去时间
had finished
past perfect
过去完成时的基本用法
He said he had worked in that factory since 1949.
他说自从1949年以来他就在那家工厂工作。
When walking down the street, I came across David, whom I hadn't seen for years.
当沿着街道散步时,我偶然遇到了戴维,我已多年未见过他。
2. 表示在过去某一时刻之前已经开始并一直延续到这一时刻的动作或状态,常和for,since引导的时间状语连用。
past perfect
过去完成时的基本用法
They had wanted to help but couldn't get here in time.
他们本来想要来帮忙的,但未能及时赶到这儿。
I had hoped to send him a Christmas card, but I forgot to do so.
我本来想送他一张圣诞节贺卡,但把这事给忘了。
We had intended to come and see you.
我们本来打算来看你的
3. 某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope,expect,suppose,think,want,wish,mean, plan,intend 等。
past perfect
过去完成时用于一些固定句型：
It was the first time that I had visited the Great Wall.
这是我第一次参观长城。
1.在 “It/That was the first/second… time that...”此句型中，主句用了一般过去时，that引导的定语从句要用过去完成时
2. “It was+一段时间+since从句”，since从句谓语用过去完成时。
It was three years since he had joined the army.
他参军三年了。
past perfect
过去完成时用于一些固定句型：
① Hardly had he got into his big office when the telephone rang.
他刚进入他的大办公室,电话铃响了。
② No sooner had he arrived than he was asked to leave again.
他刚到就被要求离开。
3.在句型Hardly…when…和 No sooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。
past perfect
过去完成时用于一些固定句型：
①If only we had listened to their advice.
我们要是听他的建议就好了。
②I’d rather you hadn’t been present.
我宁愿你当时不在场。
4.在句型If only, I’d rather 中，用过去完成时，表示“要是...就好了”；“宁愿”。
1.He ___________(learn) 3000 words before he went to England.
2.The old man told us that he__________ (travel) to many places.
3.It was the third time that he ___________ (see) such a large animal.
4. By the time he got to the airport,the plane ____________(take off)
5.Before I could say “thank you”, he___________(run away).
had learned
had travelled
had seen
had taken off
had run away
past perfect
过去完成时和一般过去时的区别：
They had arrived at the station by ten o’clock yesterday.
他们昨天十点钟之前就已经到达车站了。
They arrived at the station at ten o’clock yesterday.
他们昨天十点钟到达车站。
时间状语不同：过去完成时在时间上 强调动作发生在“过去的过去”，一定有一个表示过去的参照点。而一般过去时只强调过去某一特定的时间。
summary
二、过去完成时的基本用法
1. 常与时间状语“by+表示过去的时间”、before等引导的短句连用。
2. 表示在过去某一时刻之前已经开始并一直延续到这一时刻的动作或状态,常和for,since引导的时间状语连用。
一、过去完成时的形式变化
1、肯定句：主语+had+过去分词+其他成分
2、否定句：主语+had+not+过去分词+其他成分
3、一般疑问句：Had+主语+过去分词+其他成分
4、特殊疑问句：特殊疑问词+had+主语+过去分词+其他成分
summary
3. 某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope,expect,suppose,think,want,wish,mean, plan,intend 等。
三、过去完成时用于一些固定句型中
1.在 “It/That was the first/second… time that...”此句型中，主句用了一般过去时，that引导的定语从句要用过去完成时
2. “It was+一段时间+since从句”，since从句谓语用过去完成时。
3.在句型Hardly…when…和 No sooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。
4.在句型If only, I’d rather 中，用过去完成时，表示“要是...就好了”；“宁愿”。
summary
五、过去完成时和一般过去时的区别：
时间状语不同：过去完成时在时间上 强调动作发生在“过去的过去”，一定有一个表示过去的参照点。而一般过去时只强调过去某一特定的时间。
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
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. 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 time of his death in 1894, he _____________ important discoveries about genetics.
chose to
had made
I
Grammar
过去完成时的形式变化
1、肯定句：主语+had+过去分词+其他成分
I had learnt Japanese before I went to Japan.
2、否定句：主语+had+not+过去分词+其他成分
I had not learnt Japanese before I went to Japan.
3、一般疑问句：Had+主语+过去分词+其他成分
Had you learnt Japanese before you went to Japan
4、特殊疑问句：特殊疑问词+had+主语+过去分词+其他成分
What had you learnt before you went to Japan
表示在过去的某一时间或某一动作之前已经完成的动作或存在的状态。它表示句子中描述的动作发生在“过去的过去”。
定义
I had finished reading the novel by nine o’clock last night.
昨天晚上9点钟前，我已经读完了这本小说。
past perfect
注：过去完成时一定有一个表示过去的参照点。
past perfect
过去完成时的基本用法
By nine o'clock last night, we ____________(finish) most of the work.
到昨晚9点钟，我们已经完成了大部分的工作。
Before we got to the train station, the train had already left.
我们到达火车站之前，火车就已经离开了。
1. 常与时间状语“by+表示过去的时间”；
when/before/after+表示过去时间
had finished
past perfect
过去完成时的基本用法
He said he had worked in that factory since 1949.
他说自从1949年以来他就在那家工厂工作。
When walking down the street, I came across David, whom I hadn't seen for years.
当沿着街道散步时,我偶然遇到了戴维,我已多年未见过他。
2. 表示在过去某一时刻之前已经开始并一直延续到这一时刻的动作或状态,常和for,since引导的时间状语连用。
past perfect
过去完成时的基本用法
They had wanted to help but couldn't get here in time.
他们本来想要来帮忙的,但未能及时赶到这儿。
I had hoped to send him a Christmas card, but I forgot to do so.
我本来想送他一张圣诞节贺卡,但把这事给忘了。
We had intended to come and see you.
我们本来打算来看你的
3. 某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope,expect,suppose,think,want,wish,mean, plan,intend 等。
past perfect
过去完成时用于一些固定句型：
It was the first time that I had visited the Great Wall.
这是我第一次参观长城。
1.在 “It/That was the first/second… time that...”此句型中，主句用了一般过去时，that引导的定语从句要用过去完成时
2. “It was+一段时间+since从句”，since从句谓语用过去完成时。
It was three years since he had joined the army.
他参军三年了。
past perfect
过去完成时用于一些固定句型：
① Hardly had he got into his big office when the telephone rang.
他刚进入他的大办公室,电话铃响了。
② No sooner had he arrived than he was asked to leave again.
他刚到就被要求离开。
3.在句型Hardly…when…和 No sooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。
past perfect
过去完成时用于一些固定句型：
①If only we had listened to their advice.
我们要是听他的建议就好了。
②I’d rather you hadn’t been present.
我宁愿你当时不在场。
4.在句型If only, I’d rather 中，用过去完成时，表示“要是...就好了”；“宁愿”。
1.He ___________(learn) 3000 words before he went to England.
2.The old man told us that he__________ (travel) to many places.
3.It was the third time that he ___________ (see) such a large animal.
4. By the time he got to the airport,the plane ____________(take off)
5.Before I could say “thank you”, he___________(run away).
had learned
had travelled
had seen
had taken off
had run away
past perfect
过去完成时和一般过去时的区别：
They had arrived at the station by ten o’clock yesterday.
他们昨天十点钟之前就已经到达车站了。
They arrived at the station at ten o’clock yesterday.
他们昨天十点钟到达车站。
时间状语不同：过去完成时在时间上 强调动作发生在“过去的过去”，一定有一个表示过去的参照点。而一般过去时只强调过去某一特定的时间。
summary
二、过去完成时的基本用法
1. 常与时间状语“by+表示过去的时间”、before等引导的短句连用。
2. 表示在过去某一时刻之前已经开始并一直延续到这一时刻的动作或状态,常和for,since引导的时间状语连用。
一、过去完成时的形式变化
1、肯定句：主语+had+过去分词+其他成分
2、否定句：主语+had+not+过去分词+其他成分
3、一般疑问句：Had+主语+过去分词+其他成分
4、特殊疑问句：特殊疑问词+had+主语+过去分词+其他成分
summary
3. 某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope,expect,suppose,think,want,wish,mean, plan,intend 等。
三、过去完成时用于一些固定句型中
1.在 “It/That was the first/second… time that...”此句型中，主句用了一般过去时，that引导的定语从句要用过去完成时
2. “It was+一段时间+since从句”，since从句谓语用过去完成时。
3.在句型Hardly…when…和 No sooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。
4.在句型If only, I’d rather 中，用过去完成时，表示“要是...就好了”；“宁愿”。
summary
五、过去完成时和一般过去时的区别：
时间状语不同：过去完成时在时间上 强调动作发生在“过去的过去”，一定有一个表示过去的参照点。而一般过去时只强调过去某一特定的时间。
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
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. 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 time of his death in 1894, he _____________ important discoveries about genetics.
chose to
had made