外研版（2019）必修第二册Unit 2 Let's Celebrate! Using language 情态动词对过去的推测 课件（共20页）
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| 名称 | 外研版（2019）必修第二册Unit 2 Let's Celebrate! Using language 情态动词对过去的推测 课件（共20页） |  | |
| 格式 | pptx | ||
| 文件大小 | 39.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2024-10-06 16:51:46 | ||
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(共20张PPT)
Past Modals of Speculation
情态动词对过去的推测
学科：英语
年级：高一
教材版本：外研社(2019)
Welcome to my English class!
At the end of the class, you will be able to:
Understand how to use modal verbs to make guesses about the past;
Use modal verbs to talk about how sure or unsure you are about something that happened in the past.
Lee
Peter
Wow, that sounds so cool! Did you tell Susan the good news
I went to her house at lunchtime yesterday to tell her about it, but she was not at home. She could go out for some food.
I’m pretty sure she was able to go out and get some food. What do you mean by that
I mean it’s possible that she went out for some food at that time.
Oh, you mean she could have gone out for some food
Yes, you’re right!
Hey bro! I heard that you’re about to come back to China tomorrow for the 2022 Winter Olympics.
Yeah, I’ll be a volunteer in Beijing and I hope I can meet my favorite athletes there.
Peter was confused when Lee said “she could go out for some food”.
“She could go out for some food”
= She had the ability to go out for some food.
“She could have gone out for some food”
= It’s possible that she went out for some food.
Peter was confused when Lee said “she could go out for some food”.
“She could go out for some food”
= She had the ability to go out for some food.
“She could have gone out for some food”
= It’s possible that she went out for some food.
Past Modals of Speculation
might +
making guesses
perfect infinitive
modal verb
base
form
past
participle
go went
simple
past
past
participle
gone
have done
1. If we speculate about something that certainly happened, we use “must have done”.
Peter went to Lee’s house next morning but couldn’t find him. He thought Lee must have left for China on an early morning flight.
2. If we speculate about something that possibly happened, we use “could/may/might have done”.
Excuse me, my name’s Eileen Gu. I may have left my key card in my room. Could you open the door for me please
Oh, my God! Is that Eileen Gu She is my favorite female athlete!
3. If we speculate about something that certainly did not happen, we use “can’t/couldn’t have done”.
Surprise! Mum, I miss you so much!
Oh, no! Why is the door wide open Someone must have broken into my house!
According to Lee’s mum’s reaction that night, she could not have left her door wide open.
4. If we speculate about something that possibly did not happen, we use “may/might not have done”.
We don’t use “couldn’t have done” with this meaning.
“can’t have done”
Wow! That must be Su Yiming. He seems a little tired today. He may not have slept well last night.
Happened Didn’t happen
Certainly must have can’t/couldn’t have
Possibly could/may/might have may/might not have
Try to finish the following conversation with them.
Yiming, Congratulations! Your parents _____________so calm in such a stressful situation. They____________ quite nervous. But you finally made it. What’s the secret of your success
Most people ___________had high expectations for me. But I had high expectations for myself. That is probably the reason why I succeeded eventually.
must have been
can’t have been
may not have
I just want to be a strong female role model for all young girls in China and to show them what is possible when you have the courage to dream big and follow these dreams!
A few months ago, word on the street was that you __________considered skiing for the American team. But you eventually decided to compete for China! Why
might have
Homework
After winning the Olympic gold medal, Su Yiming was invited back to his high school to give a speech on February 18, which is his birthday. However, when he came on stage, he found that the whole auditorium was empty. Please use the modal verbs we learned previously to speculate about what might have happened.
Thank you so much!
Past Modals of Speculation
情态动词对过去的推测
学科：英语
年级：高一
教材版本：外研社(2019)
Welcome to my English class!
At the end of the class, you will be able to:
Understand how to use modal verbs to make guesses about the past;
Use modal verbs to talk about how sure or unsure you are about something that happened in the past.
Lee
Peter
Wow, that sounds so cool! Did you tell Susan the good news
I went to her house at lunchtime yesterday to tell her about it, but she was not at home. She could go out for some food.
I’m pretty sure she was able to go out and get some food. What do you mean by that
I mean it’s possible that she went out for some food at that time.
Oh, you mean she could have gone out for some food
Yes, you’re right!
Hey bro! I heard that you’re about to come back to China tomorrow for the 2022 Winter Olympics.
Yeah, I’ll be a volunteer in Beijing and I hope I can meet my favorite athletes there.
Peter was confused when Lee said “she could go out for some food”.
“She could go out for some food”
= She had the ability to go out for some food.
“She could have gone out for some food”
= It’s possible that she went out for some food.
Peter was confused when Lee said “she could go out for some food”.
“She could go out for some food”
= She had the ability to go out for some food.
“She could have gone out for some food”
= It’s possible that she went out for some food.
Past Modals of Speculation
might +
making guesses
perfect infinitive
modal verb
base
form
past
participle
go went
simple
past
past
participle
gone
have done
1. If we speculate about something that certainly happened, we use “must have done”.
Peter went to Lee’s house next morning but couldn’t find him. He thought Lee must have left for China on an early morning flight.
2. If we speculate about something that possibly happened, we use “could/may/might have done”.
Excuse me, my name’s Eileen Gu. I may have left my key card in my room. Could you open the door for me please
Oh, my God! Is that Eileen Gu She is my favorite female athlete!
3. If we speculate about something that certainly did not happen, we use “can’t/couldn’t have done”.
Surprise! Mum, I miss you so much!
Oh, no! Why is the door wide open Someone must have broken into my house!
According to Lee’s mum’s reaction that night, she could not have left her door wide open.
4. If we speculate about something that possibly did not happen, we use “may/might not have done”.
We don’t use “couldn’t have done” with this meaning.
“can’t have done”
Wow! That must be Su Yiming. He seems a little tired today. He may not have slept well last night.
Happened Didn’t happen
Certainly must have can’t/couldn’t have
Possibly could/may/might have may/might not have
Try to finish the following conversation with them.
Yiming, Congratulations! Your parents _____________so calm in such a stressful situation. They____________ quite nervous. But you finally made it. What’s the secret of your success
Most people ___________had high expectations for me. But I had high expectations for myself. That is probably the reason why I succeeded eventually.
must have been
can’t have been
may not have
I just want to be a strong female role model for all young girls in China and to show them what is possible when you have the courage to dream big and follow these dreams!
A few months ago, word on the street was that you __________considered skiing for the American team. But you eventually decided to compete for China! Why
might have
Homework
After winning the Olympic gold medal, Su Yiming was invited back to his high school to give a speech on February 18, which is his birthday. However, when he came on stage, he found that the whole auditorium was empty. Please use the modal verbs we learned previously to speculate about what might have happened.
Thank you so much!