When the occurrence of something is known,“是……的" can be used to emphasize the time, manner, place, purpose and doer involved in the occurrence of the event. “是”can be omitted in positive and interrogative sentences, but not in negative sentences.
tā shì jīn tiān lái běi jīnɡ de 。  
她是今天来北京的。She came to Beijing today.
wǒ shì kāi chē qù xī ān de 。   
我是开车去西安的。I went to Xi 'an by car.
zhè shì zài shànɡ hǎi mǎi de 。  
这是在上海买的。I bought it in Shanghai.
wǒ shì lái yún nán lǚ yóu de 。  
我是来云南旅游的。I came to Yunnan for traveling.
wǎn fàn shì dà wèi zuò de 。
晚饭是大卫做的。David cooked dinner.

wǒ men bú shì zuò fēi jī qù de 。 
我们不是坐飞机去的。We didn't go by plane.

JOJO CHINESE

是……的

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.

Life Lessons from Aesop's Fables

Episode 17: The Cock & the Fox

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Stag & His Reflection” and can be found here:
https://www.read.gov/aesop/017.html
❥The moral of today’s fable is: 
“We often make much of the ornamental and despise the useful.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"雄鹿和他的倒影"，可以在这里找到：
https://www.read.gov/aesop/017.html
❥今天的寓言故事的寓意是： 
"我们常常夸大装饰性，而轻视实用性。"

Episode 16: The Stag & His Reflection

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Fox & the Stork” and can be found here:
https://www.read.gov/aesop/016.html
❥The moral of today’s fable is: 
“Do not play tricks on your neighbors unless you can stand the same treatment yourself.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"狐狸与鹳"，可以在这里找到：
https://www.read.gov/aesop/016.html
❥今天的寓言故事的寓意是： 
"不要欺骗您的邻居，除非您自己也能忍受同样的待遇。"

Episode 15: The Fox & the Stork

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Heron” and can be found here:
https://www.read.gov/aesop/015.html
❥The moral of today’s fable is: 
“Do not be too hard to suit or you may have to be content with the worst or with nothing at all.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"苍鹭号"，可以在这里找到：
https://www.read.gov/aesop/015.html
❥今天的寓言故事的寓意是： 
"不要太难适应，否则你可能不得不满足于最差的情况，或者什么都不满足。"

Episode 14: The Heron

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Wild Boar & the Fox” and can be found here:
https://www.read.gov/aesop/014.html
❥The moral of today’s fable is: 
“Preparedness for war is the best guarantee of peace.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"野猪与狐狸"，可以在这里找到：
https://www.read.gov/aesop/014.html
❥今天的寓言故事的寓意是： 
"对战争的准备是和平的最好保证"。

Episode 13: The Wild Boar & the Fox

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Two Goats” and can be found here:
https://www.read.gov/aesop/013.html
❥The moral of today’s fable is: 
“It is better to yield than to come to misfortune through stubbornness.”
https://www.read.gov/aesop/013.html
❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"两只山羊"，可以在这里找到：
https://www.read.gov/aesop/013.html
❥今天的寓言故事的寓意是： 
"与其因固执而遭遇不幸，不如屈服"。

Episode 12: The Two Goats

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and reading comprehension by answering the quiz questions.
❥ Today's fable is called “The Crow & the Pitcher” and can be found here:
https://www.read.gov/aesop/012.html
❥The moral of today’s fable is: 
“In a pinch, a good use of our wits may help us out.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"乌鸦和投手"，可以在这里找到：
https://www.read.gov/aesop/012.html
❥今天的寓言故事的寓意是： 
"在紧要关头，好好利用我们的智慧可能会帮助我们解决问题" 。

Episode 11: The Crow & the Pitcher

❥ In this podcast, Melo reads from The Aesop for Children found for free online at: https://www.read.gov/aesop/001.html
❥ Listen and learn the moral of each story.
❥ Practice listening and/or reading comprehension by answering the quiz questions.
❥ Today's fable is called "The Oak & the Reeds" and can be found here:
https://www.read.gov/aesop/011.html
❥The moral of today’s fable is: 
“Better to yield when it is folly to resist than to resist stubbornly and be destroyed.”

❥ 在这个播客中，梅洛朗读了《儿童伊索》，可在网上免费找到：https://www.read.gov/aesop/001.html
❥聆听并学习每个故事的寓意。
❥ 通过回答问答问题练习听力和/或阅读理解。
❥ 今天的寓言叫"橡树与芦苇"，可以在这里找到：
https://www.read.gov/aesop/011.html
❥今天的寓言故事的寓意是： 
"在抵抗无用的情况下屈服，总比顽强抵抗而被消灭要好"。