英语牛津译林版（2024）Unit 5 Music speaksGrammar第3课时精练

这是一份英语牛津译林版（2024）Unit 5 Music speaksGrammar第3课时精练，文件包含Unit4_单元知识点梳理_教师版docx、Unit4_单元知识点梳理_学生版docx等2份学案配套教学资源，其中学案共24页， 欢迎下载使用。
第一部分 知识点讲义
一、学习目标
理解 because, fr, since, as 四个原因连词的意义、语气强弱及用法差异。
能正确使用 because 和 fr 连接原因状语从句，掌握 fr-从句"不置于句首、不独立使用"的限制。
能正确使用 since 和 as 引出已知原因，并能在句首或句中灵活安排从句位置。
能综合运用四个原因连词改写句子、描述音乐节等校园活动，做到表达准确、多样。
二、重点
because 强调未知原因，语气最强，可置于句首或句中，可用于回答 why 问句。
fr 引出补充说明的原因（afterthught），语气较弱，用于正式、文学性语境；fr-从句不置于句首、不能独立使用。
since 和 as 引出双方已知的原因，语气弱于 because，可置于句首或句中。
because 与 s 不能同时出现在同一个句子中（英语习惯）。
三、难点
because 与 fr 的选用：回答 why 问句、强调原因时用 because；正式文体中补充说明原因时用 fr。
fr-从句的位置限制（不放句首、不独立成句）以及与并列句标点的配合。
根据"原因是否为已知信息"在 because 与 since/as 之间做出恰当选择。
四、字词与词汇
五、语法与句型
Part A：用 because 和 fr 表示原因
【规则】
because 强调听者/读者尚不知道的原因，语气强；because-从句可放在主句之前或之后。
because 用于回答 why 引导的问句：—Why d peple lve his music? —Because it is very special.
fr 也引导原因从句，但引出的是事后补充说明的原因（afterthught），不如 because 常见。
fr-从句永不置于句首，也不能独立成句；主句与 fr-从句之间通常用逗号隔开。
fr 表原因时用于非常正式、常为文学性的语境。
【结构公式】
主句 + because + 原因从句. / Because + 原因从句, + 主句.
—Why —Because ...
主句, + fr + 原因从句.（fr-从句只放句尾，不放句首）
【教材例句】
Many peple have heard f him because he's a great musician.
Peple think highly f Tan Dun's music because he successfully brught Eastern and Western styles f music tgether.
Many peple lve Tan Dun's music, fr his music is very special.
【易错纠正】
Part B：用 since 和 as 表示原因
【规则】
since 和 as 也用来引出原因，但这些原因通常是双方已经知道的。
since / as 的语气比 because 弱；since 稍强于 as，二者常可互换。
since-从句和 as-从句可置于句首或句中；置于句首时，从句后用逗号与主句隔开。
回答 why 问句、强调未知原因时不用 since/as，而用 because。
【结构公式】
Since/As + 原因从句, + 主句.
主句 + since/as + 原因从句.
【教材例句】
Since his father was als a musician, he learnt abut music early in his life.
As he was clearly very talented, it is n surprise that he became a great musician.
As he likes the sunds f nature, Tan uses them a lt in his music.
【易错纠正】
六、学习支架
对比信息卡：四个原因连词一览
句型转换支架：两句合并为一句
第一步：判断哪句是结果（主句），哪句是原因（从句）。
第二步：根据语气与语境选择连词——强调新原因用 because；已知原因用 since/as；正式文体补充说明用 fr。
第三步：安排从句位置——because/since/as 可在句首或句中，fr 只能在主句之后。
示例：Tan Dun likes the sunds f nature. He thinks nature creates its wn music. → Tan Dun likes the sunds f nature because he thinks nature creates its wn music.
七、知识要点
1. because 的核心用法
because 是表示原因的首选连词，语气最强。教材原句：Many peple have heard f him because he's a great musician. because-从句位置灵活：Because he lves nature, Tan uses its sunds in his music. = Tan uses the sunds f nature in his music because he lves nature. 注意 because-从句置于句首时，要用逗号与主句隔开。
2. fr 的三大限制
① 不置于句首：Fr-clauses never cme at the beginning f a sentence. ② 不独立使用：cannt stand alne，前面必须有主句。③ 语体正式：用于 very frmal and ften literary cntext，日常口语中很少用。教材练习示例：Many peple lve Tan Dun's music, fr his music is very special. 注意 fr 前通常加逗号。
3. since 与 as 表"已知原因"
since 和 as 引出的原因是说话双方都知道的事实，起解释背景的作用，语气弱于 because。教材原句：Since his father was als a musician, he learnt abut music early in his life. As he was clearly very talented, it is n surprise that he became a great musician. 两词在此语境中常可互换，since 语气稍强。
4. because 与 because f 的区别
because 是连词，后接完整的句子：He was late because it rained heavily. because f 是介词短语，后接名词、代词或动名词：He was late because f the heavy rain. 考试中常以此设错，务必看清后面接的是句子还是名词短语。
5. because / since / as 与 s 不可同用
汉语可以说"因为……所以……"，但英语中 because、since、as 与 s 在同一个句子中只能保留一个：Because/Since/As he was ill, he didn't cme. = He was ill, s he didn't cme. 这是中考高频易错点。
八、典型例题
例1 ______ his father was als a musician, Mzart learnt abut music early in his life.
A. Fr B. Since
C. S D. But
例2 Many peple lve Tan Dun's music, ______ his music is very special.
A. fr B. s
C. r D. but
例3 改写句子：Tan Dun is a wrld-famus cmpser. He was chsen t write music fr the Beijing Olympics.（用 because 合并）
第二部分 同步练习
★ 基础巩固
一、单项选择
1. ______ he likes the sunds f nature, Tan uses them a lt in his music.
A. As B. S
C. Or D. But
2. —Why d many peple knw Tan Dun? —______ he is a wrld-famus cmpser.
A. Fr B. Because
C. Since D. As
3. He decided t stay at hme, ______ it was raining heavily utside.
A. fr B. s
C. because f D. since when
4. ______ the cncert is at 7 p.m., shall we meet at 6:30?
A. Because f B. Since
C. Fr D. S
二、首字母填空
1. Many peple have heard f him b__________ he's a great musician.
2. He was late fr class b__________ __________ the heavy rain.
3. S__________ his father was als a musician, he learnt abut music early in his life.
4. A__________ he was clearly very talented, it is n surprise that he became great.
5. He must be very tired, f__________ he has practised the pian fr five hurs.
三、句子改写
1. Peple think highly f Tan Dun's music. He successfully brught Eastern and Western styles tgether.（用 because 合并）
____________________________________
2. It was raining heavily. The cncert was put ff.（用 as 合并，从句置句首）
____________________________________
★★ 能力提升
四、单项选择
1. ______ yu are free this Saturday, why nt g t the music festival with us?
A. Fr B. Since
C. Because f D. S
2. Tan Dun's music is ppular ______ it successfully mixes Eastern and Western styles.
A. because f B. because
C. fr D. as if
3. ______ he had n instruments as a child, he made music with stnes and paper.
A. As B. Fr
C. S D. Until
4. She practises the erhu every day, ______ she wants t play it at the schl festival.
A. fr B. because f
C. s D. but
五、阅读理解
Mzart is ne f the mst famus musicians in histry. Since his father was als a musician, he learnt abut music early in his life. Mzart wrte his first piece f music when he was just five years ld. As he was clearly very talented, it is n surprise that he became a great musician.
Hwever, Mzart's life was nt easy. He wrked hard all his life because he had t supprt his family. He travelled a lt, fr travelling gave him new ideas fr his music. Althugh he died yung, he left the wrld mre than 600 wnderful wrks.
Tday, peple still lve Mzart's music because it is full f beauty and jy. As his music is knwn all ver the wrld, he will always be remembered as ne f the greatest cmpsers.
5. Why did Mzart learn abut music early in his life?
A. Because he liked travelling.
B. Because his father was als a musician.
C. Because he had a large family.
D. Because he wrte 600 wrks.
6. When did Mzart write his first piece f music?
A. At fur. B. At five.
C. At six. D. At seven.
7. Why did Mzart wrk hard all his life?
A. Because he wanted t be famus.
B. Because he enjyed travelling.
C. Because he had t supprt his family.
D. Because he liked new ideas.
8. Which wrd is used in the passage t give a reasn in a frmal way and never cmes at the beginning f a sentence?
A. because B. since
C. as D. fr
六、选词填空（用方框中所给词的适当形式填空）
because, since, as, fr, because f, s
9. __________ yu lve music, yu mustn't miss the cncert tnight.
10. He didn't g t schl __________ his illness.
11. Many peple have heard f him __________ he's a great musician.
12. She was chsen t sing at the festival, __________ she has a beautiful vice.
13. __________ it was getting late, we decided t g hme.
14. It rained heavily, __________ the sprts meeting was put ff.
七、书面表达
学校音乐节刚刚结束。请你以 "Our schl music festival" 为题写一篇 80 词左右的短文，描述这次音乐活动。要求：
1. 简要介绍音乐节的时间、地点和主要活动；
2. 至少使用 because, fr, since, as 各一次说明原因；
3. 谈谈你的感受。
_______________________________________________________________________________________________
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★★★ 拓展延伸
1. 推断题：In frmal writing, why d writers smetimes prefer "fr" t "because" t give reasns?
A. Because fr is strnger than because.
B. Because fr-clauses can begin a sentence.
C. Because fr adds a plite, literary tne when adding an afterthught.
D. Because fr can answer why-questins.
____________________________________
2. 结构分析：读句子 "As he was clearly very talented, it is n surprise that he became a great musician." 指出原因从句和主句，并说明 as 从句置于句首的表达效果。
____________________________________
3. 综合运用：教材 B3 要求写至少四句关于学校音乐活动的句子。请分别用 because, fr, since, as 各写一句话，描述一次你参加过的音乐活动。
____________________________________单词
读音 IPA
词性
释义
教材例句
reasn
/ˈriːzn/
n.
原因；理由
We can use because and fr t give reasns.
emphasis
/ˈemfəsɪs/
n.
强调；重视
Because puts mre emphasis n the reasn that is nt knwn t the listener/reader.
listener
/ˈlɪsənə/
n.
听者；倾听者
... the reasn that is nt knwn t the listener/reader.
tne
/təʊn/
n.
语气；语调
The tne f because is strng.
intrduce
/ˌɪntrəˈdjuːs/
v.
引出；介绍
We can als use fr t intrduce clauses f reasn.
clause
/klɔːz/
n.
从句；分句
Fr is used t intrduce the reasn that is given as an afterthught.
afterthught
/ˈɑːftəθɔːt/
n.
事后的想法；补充说明
Fr is used t intrduce the reasn that is given as an afterthught.
stand alne
/stænd əˈləʊn/
phr.
独立存在；独立使用
Fr-clauses never cme at the beginning f a sentence and cannt stand alne.
frmal
/ˈfɔːml/
adj.
正式的
We use fr t give reasns in a very frmal and ften literary cntext.
literary
/ˈlɪtərəri/
adj.
文学的
... in a very frmal and ften literary cntext.
cntext
/ˈkɒntekst/
n.
语境；上下文
... in a very frmal and ften literary cntext.
talented
/ˈtæləntɪd/
adj.
有才华的
As he was clearly very talented, it is n surprise that he became a great musician.
surprise
/səˈpraɪz/
n. & v.
惊奇；使惊讶
... it is n surprise that he became a great musician.
rewrite
/ˌriːˈraɪt/
v.
改写；重写
Help her rewrite each pair f sentences int ne sentence.
ticket
/ˈtɪkɪt/
n.
票；入场券
Sunshine Middle Schl gave all the students free tickets t a Beijing pera shw.
典型错误
正确表达
说明
Because he likes the sunds f nature, s Tan uses them a lt in his music.
Because he likes the sunds f nature, Tan uses them a lt in his music. / He likes the sunds f nature, s Tan uses them a lt in his music.
英语中 because 与 s 不能同时用于一个句子，只能保留其一。
Fr he is a great musician, many peple have heard f him.
Many peple have heard f him, fr he is a great musician.
fr-从句不能置于句首，只能放在主句之后作补充说明。
—Why d yu like his music? —Fr it is beautiful.
—Why d yu like his music? —Because it is beautiful.
回答 why 问句只能用 because，fr-从句不能独立使用。
典型错误
正确表达
说明
—Why was the cncert put ff? —Since it rained heavily.
—Why was the cncert put ff? —Because it rained heavily.
回答 why 问句、引出未知原因时用 because；since 引出的通常是已知原因。
As he was late, s the teacher was angry.
As he was late, the teacher was angry.
as 与 s 不能同时用于一个句子，保留其一即可。
连词
语气强弱
原因类型
从句位置
典型用法 / 限制
because
最强
听者未知的新原因
句首或句中
可回答 why 问句；不能与 s 同用
fr
较弱（正式、文学性）
事后补充的原因
只放句中（主句之后）
不放句首、不独立使用；前加逗号
since
较弱（稍强于 as）
双方已知的原因
句首或句中
意为"既然、由于"
as
弱
双方已知的原因
句首或句中
意为"由于、因为"；常用于说明背景