第15讲 原因状语从句-【暑假辅导班】2021年新八年级英语暑假精品课程（牛津译林版）

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第15讲 八上新知专题 原因状语从句
【暑假辅导班】2021 年新八年级英语暑假精品课程（牛津译林版）
第一部分 语法
原因状语从句
在复合句中，做原因状语的从句称为原因状语从句，可置于句首或句来。原因状语从句的引导词及用
法的下所示:
常用引导词:because (因为) since (既然) as (因为)
用法
1、 because 表示造成某种情况的直接原因，引导的原因状语从句通常置于句来，语气最强
I didn't go surfing because it was too cold.我没有去冲浪，因为天气太冷了。
I can't go hiking with you because I have to help my mom with housework.我不能和你一起去远足，因为
我得帮妈妈做家务。(
2、 since 表示已知或显然的原因，侧重强调主句内容，引导的原因状语从句通常置于句首，语气比
because 弱。
Since he was busy, he didn't come.因为他很忙，所以没来。
Since stress can make us sick, we have to learn how to deal with it.我们必须学会如何应对压力，因为它会
使我们生病。
3、 as 表示对结果的附加说明，引导的原因状语从句通常置于句首或句末，语气比 because 和since
弱。As the car was expensive, 1 we didn't buy it.因为这辆车很贵，所以我们就没有买它。
As it is often cold 1 in the mountains, 1 you need to wear warm clothes.由于山里经常很冷，所以你需要穿
保暖的衣服。
注意：
1、for 引出的句子也可以表示原因，但不是状语从句，而是并列句，因为 for 是并列连词。
We listened eagerly,for he brought news of our family.
2、because 和so 不能同时出现在同一个句子里面。因为 because 是从属连词，而 so 是并列连词。
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第二部分 原因状语从句专项训练（含解析）
一、单项选择
1．I didn’t go to the party not the cold weather but I didn’t feel well.
A．because of; because B．because; because of
C．because；because D．because of; because of
2．一 What shall we do now?
一 __________ it's raining hard, let's stay at home.
A．So B．Since C．However D．Otherwise
3．Tom isn't feeling very well. He seems to have a cold _______ the weather changes suddenly .
A．before B．so C．because D．because of
4．--- ______ the sky is still blue, let’s go birdwatching together.
---But the weather report says it is going to rain.
A．SinceB．When C．After D．While
5．The mother was worried _______ the baby kept ______________ .
A．because; cryingB．because of; to cry
C．because of; crying D．because; cried
6．The mother was worried _______ her baby kept _______.
A．because ; crying B．so ; to cry C．because of ; crying D．if ; cried
7．_______ he can't answer the question, you'd better ask someone else.
A．Before B．So C．Since D．until
8． you live in one house with friends, you should share the housework.
A．SinceB．Unless C．Though D．So
9．________ this is your first visit to New York, you'd better learn some of the customs.
A．Unless B．Until C．Since D．Although
10．As Tom is a brave boy, he knows how to stay calm when there is danger. Which word can replace (代替) “As”
here?
A．So B．Since C．Until D．If
11．_____ there was a lot of fog in the morning ______ I was late for school.
A．Because, so B．Because, / C．Because, but D．So, because
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12．------Is Tom at school today?
------No, he’s at home _______ he has a bad cold.
A．because B．if C．until D．before
13．— I won’t attend the meeting _______ him, _______ I have too much to do these days.
— I see.
A．instead; as a result
B．instead of; because
C．instead; for example
D．instead of; in order to
14．I don't like winter it's too cold.
A．and B．but
C．or D．because
15．_______ you are busy now, let’s meet next time, OK?
A．For B．When C．Because of D．Since
16．—Did you return Helen's call?
—I didn't need to I'll see her tomorrow.
A．though B．because C．when D．unless
17．The boy made so many mistakes in the exam_______ he was too careless.
A．because B．because ofC．if D．but
18． My English teacher is very knowledgeable_______ she has been to many countries.
A．but B．so that
C．because D．when
19．Mum, I’m hungry now I didn’t have breakfast this morning.
A．because B．because ofC．and D．but
20．_______ everyone is here, let’s begin our meeting.
A．So B．As a resultC．Until D．Since
21．—Tom isn’t feeling very well.
—He seems to have a cold the weather changes suddenly.
A．before B．so C．because D．if
22． —Why was he late for school?
— ________his bike was broken on the road.
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第15讲 原因状语从句-【暑假辅导班】2021年新八年级英语暑假精品课程（牛津译林版）.docx

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