内容正文:
Adverbial clauses of reason
Unit 8 Imagine that! — 原因状语从句导学案
Class: _________ Name: _________ No.: _________
🎯 学习目标 (Learning Objectives)
能在语境中找出表达“因为”的四个关键词:because, as, since, because of。
通过观察,探究并总结 because / as / since 与 because of 在用法上的不同。
能用这四个词完成关于“外星人”的探案记录并表达自己的观点。
——————————————————————————————————————————
Step 1: 探秘现场 —— 观察与发现 (Observation)
💡 Tina和Tom在森林里发现了一艘坠毁的飞船!请朗读以下线索,注意加粗的词,并完成右侧的任务。
现场线索 (Sentences)
探究任务 (Your Tasks)
1. At midnight, there was a loud noise because a spaceship crashed in the forest.
划出 because 后面的主语和谓语动词。
2. As it was too late to go outside, Tina and Tom decided to look the next day.
圈出这句话中的标点符号“ , ”。
3. Since no one else saw the aliens, their father refused to believe them.
划出 since 后面的主语和谓语动词。
4. The spaceship couldn't fly because of the damage (损坏).
because of 后面跟着的是:
(填“句子”或“名词”)___________。
Step 2: 规律总结 —— 提取公式 (Rule Summary)
💡 同桌讨论,根据Step 1的观察结果,补全我们的“语法秘籍”。
🔑 秘籍一:词性的秘密
• because, as, since 都是连词,它们后面必须跟着一个完整的 ________ (句子 / 名词),也就是要有主语和谓语。
公式:Main clause (主句) + because / as / since + 句子.
• because of 是一个介词短语,它后面不能跟完整的句子,只能跟 ________ (名词 / 代词 / 名词短语)。
公式:Main clause (主句) + because of + 名词/短语.
🔑 秘籍二:位置与标点
• 原因状语从句可以放在主句的后面,此时中间 ( 需要 / 不需要 ) 加逗号。 (如线索 1)
• 原因状语从句也可以放在句子的最开头,此时主句和从句之间 ( 需要 / 不需要 ) 加逗号 , 分开。 (如线索 2 和 3)
Step 3: 警局笔录 —— 支架式挑战 (Practice)
💡 警察局正在给Tom做笔录,但警察的笔记有些不完整。请你帮他补充完整。
第一步:连连看(找准原因)
(1) Why was Tina sure that something landed? 👉 [ b ] a. We heard some voices speaking a strange language.
(2) Why did you and Tina hide? 👉 [ ] b. She heard a loud noise last night.
(3) Why did you run away? 👉 [ ] c. No one else saw these aliens.
(4) Why did your father refuse to believe you? 👉 [ ] d. An alien saw us and made a terrible noise.
第二步:写笔记(运用规则)
*(注意:请判断用 because/as/since 加句子,还是用 because of 加名词短语)*
(1) 警察笔记:Tina was sure something landed (because of) ____________________________________.
💡 提示:a loud noise 是名词短语,直接放在 because of 后面
(2) 警察笔记:They hid (because) ____________________________________.
💡 提示:将连线题a变成完整的句子抄写下来
(3) 警察笔记:(As) ____________________________________, they ran away.
💡 提示:As放在句首,别忘了中间的逗号!
(4) 警察笔记:(Since) ____________________________________, their father refused to believe them.
💡 提示:同上,注意结构完整。
Step 4: 脑洞大开 —— 表达观点 (Application)
💡 Do you think aliens exist (存在)? 读一读新闻标题,用今天学到的词说说你的理由。
📰 News: “Aliens exist and they could be living among us, says Britain's first astronaut.”
选择一个立场,试着说一说/写一写:
• 立场 A (I agree):
I think aliens exist because the universe (宇宙) is so big.
(Since) ______________________________, ______________________________.
• 立场 B (I disagree):
I don't think aliens exist because of ______________________________ (no evidence / no photos).
(As) ______________________________, ______________________________.
学科网(北京)股份有限公司
$