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Unit 1 Teenagers today 语法+写作解析
一、语法解析
(一)条件状语从句
常用if,unless,once等来引导，相当于汉语的"如果...、就...吧"。
注意:
1.常常遵循"主将从现"原则(即主句用将来时态，从句用一般现在时)
Eg: If it doesn't rain tomorrow, I will have a picnic.
如果明天不下雨，我们就去野餐。
2.if引导的从句可以放在主句之前，也可放在主句之后。
Eg: If you ever go to London, make sure you visit the Science Museum.
=Make sure you visit the Science Museum if you ever go to London.
如果你去伦敦，一定要去参观科学博物馆。
(二)原因状语从句
常用because,since和as引导，其中because的语气最强，引导的原因状语从句多放在主句之后，回答由why提出的问题。as和since的语气比较弱，一般用来表示明显的原因，由其引导的原因状语从句多放在句首。
Eg: He didn't come to school because he was ill.
他没来上学因为他病了。
As it is raining, we shall not go to the zoo.
由于正在下雨，我们不应该去动物园。
二、写作解析
话题:Write an introduction to another work about youth.
(一)提示
1. Who is the writer
2. What is the main idea of the work
3. What are your favourite lines from the work Why do you like them
4. What does the writer think about young people
5. What do you want to say to finish your introduction
(二)写作步骤
定文体(记叙文)、人称(第三人称)、时态(一般过去时、现在完成时)
(三)范文
“The Young China" is a famous poem written by Liang Qichao. It told us that teenagers shoulder the great responsibility of our country's future. As Liang Qichao said, a nation's strength depends on its youth. This duty is special to me because I'm part of the future builders. To make our country strong and rich, I'll study hard to gain knowledge, keep a positive attitude, and never give up. I believe our efforts will lead China to a brighter future.
21世纪教育网(www.21cnjy.com)(共11张PPT)
Unit 1 Teenagers today
九年级
外研版2026
上
语法+写作解析
一、语法解析
(一)条件状语从句
常用if,unless,once等来引导，相当于汉语的"如果...、就...吧"。
注意:
1.常常遵循"主将从现"原则(即主句用将来时态，从句用一般现在时)
Eg: If it doesn't rain tomorrow, I will have a picnic.
如果明天不下雨，我们就去野餐。
2.if引导的从句可以放在主句之前，也可放在主句之后。
Eg: If you ever go to London, make sure you visit the Science Museum.
=Make sure you visit the Science Museum if you ever go to London.
如果你去伦敦，一定要去参观科学博物馆。
(二)原因状语从句
常用because,since和as引导，其中because的语气最强，引导的原因状语从句多放在主句之后，回答由why提出的问题。as和since的语气比较弱，一般用来表示明显的原因，由其引导的原因状语从句多放在句首。
Eg: He didn't come to school because he was ill.
他没来上学因为他病了。
As it is raining, we shall not go to the zoo.
由于正在下雨，我们不应该去动物园。
二、写作解析
话题:Write an introduction to another work about youth.
(一)提示
1. Who is the writer
2. What is the main idea of the work
3. What are your favourite lines from the work Why do you like them
4. What does the writer think about young people
5. What do you want to say to finish your introduction
(二)写作步骤
定文体(记叙文)、人称(第三人称)、时态(一般过去时、现在完成时)
(三)范文
“The Young China" is a famous poem written by Liang Qichao. It told us that teenagers shoulder the great responsibility of our country's future. As Liang Qichao said, a nation's strength depends on its youth. This duty is special to me because I'm part of the future builders. To make our country strong and rich, I'll study hard to gain knowledge, keep a positive attitude, and never give up. I believe our efforts will lead China to a brighter future.

Thanks!
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