第15讲 原因状语从句-2023年新八年级译林版英语暑假重难点精讲及专项训练

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2023年新八年级英语暑假精品课及练习

第15讲 原因状语从句

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。

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．Since       B．When       C．After D．While

5．The mother was worried________the baby kept________________.

A．because; crying       B．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．Since       B．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

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 of C．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 of C．and   D．but

20．_______ everyone is here, let’s begin our meeting.

A．So    B．As a result       C．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.

A．Since       B．Because

C．As     D．Because of

23．The farmers were so sad ____ they lost their farms.

A．that   B．because of C．but    D．because

24．He has poor eyesight ________ he works on the computer at night.

A．because    B．because of C．and   D．but

二、汉译英：整句

25．她无忧无虑，因为我们把她照顾得很周到。

________________________

26．不要信任那个女孩，因为她总是说谎。

_________________________

27．我总是很早起床，因为我需要练习网球。

________________________________________________________

28．因为人们猎捕它们，许多野生动物失去了生命。

_______________________________________

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参考答案

1．A

【详解】

句意：我没有去参加聚会，不是因为天气寒冷，而是因为我感觉不舒服。

because of因为; because因为。根据句意：我没有去参加聚会，不是因为天气不好，而是因为我感觉不舒服。because of接名词，代词或动名词等，because接句子。结合not ____the weather but ____I didn’t feel well可知，选项A符合题意。故选A。

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