第10讲 原因状语从句-2023年新九年级译林版英语暑假重难点精讲及专项训练

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2023年新九年级英语暑假重难点精讲及专项训练

第10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．________ you sit in front of the computer all day while working, you’d better take exercise for at least an hour every day.

A．Even if     B．Even though    C．Since D．As if

2．They waited ________ it was dark before leaving, ________ they didn’t want anyone to see them leave.

A．since; because  B．until; as    C．unless; for D．so; because

3．—Why didn’t you come back to the meeting？

—________I didn’t think the meeting would be interesting.

A．As    B．Since C．For   D．Because

4．—She may need some help ________ she’s new here.

—Let’s help her as much as possible.

A．though     B．unless       C．while D．as

5．—Jenny was sad ________ she didn’t pass the math exam.

—Let’s cheer her up.

A．because    B．and   C．but    D．if

6．In China, we usually use red paper for Hongbao ________ red means good luck.

A．if      B．although   C．because     D．while

7．We didn’t enjoy the day ________ the weather was so bad.

A．if      B．but    C．or     D．because

8．—       everyone makes mistakes, you needn’t take your fault too seriously.

—Thanks for your comfort(安慰).

A．Since       B．Although  C．When

9．The sky is much bluer _________ we have done a lot of things to protect the environment.

A．so     B．but    C．though      D．because

10．Many people like paper books more, ______ they are comfortable to read.

A．because    B．and   C．or     D．so

11．A Spring Morning is my favorite poem _________ its words are beautiful and I can feel the sense of spring in it.

A．until  B．because     C．though

12．I am really proud of my group _______ we’re always discussing and sharing study secrets together. How important the group work is!

A．because    B．though      C．unless

13．You can’t take photos here, __________ it’s too dangerous.

A．because    B．but    C．and   D．so

14．We can’t have a picnic today______ it is still raining now.

A．because    B．but    C．and   D．so

15．—Could you tell me more about the movie Frozen II __________ you have watched it.

—No problem. But you’d better watch it in person __________ I can’t express its beauty.

A．since; so   B．unless; as  C．since; as

16．Some students had to give up their hobbies _______ they were busy with their school work.

A．though     B．when C．because     D．until

17．This cafe is very famous ______ it serves cheap and delicious food.

A．although   B．and   C．as      D．so

18．Young students will certainly learn more from real life _____ they are given more chances to experience it．

A．so     B．because     C．but    D．though

19．—It’s time for bed, Mary.

—Oh, Mum, I can’t go to bed________   I haven’t finished my homework.

A．so     B．until  C．since D．if

20．Poor Kate didn’t go to school today ________ she hurt her leg.

A．so that      B．if      C．before      D．because

二、完成句子

21．她不开心是因为她上学迟到了。

She was unhappy __________ she was late __________ school.

22．因为我们齐心协力，所以很快就控制住了疫情。

Because we________________, the epidemic was under control in a short time.

23．既然汽车坏了，就什么都做不了了。

_____the car broke down, nothing_____________.

三、改写句子

24．It was cold, so I closed the window and door.（合并为一句）

I closed the window and door ________ it was cold.

25．Jim’s father mended the car. It was broken. (用过去完成时连接两句)

___________________________________________

四、汉译英：整句

26．走的时候带把伞吧，可能会下雨。

__________________________________________________________________

27．外面的噪音几乎使Tom受不了，他别无选择只得关上了门。

__________________________________________________________________

28．我很焦虑，因为我不知道怎么和别人和睦相处。

__________________________________________________________________

29．由于你学习方面没有进展，你应该找老师帮忙。

__________________________________________________________________

30．现在我们训练的更加刻苦了,  因为我们想要获胜。

__________________________________________________________________

…………

参考答案

1．C

【详解】

句意：既然你整天坐在电脑前工作，你最好每天锻炼至少一小时。

考查连词辨析。A. Even if 意为“即使”，一般引导的是把握不大或假设的事情；    B. Even though意为“即使”，引出的是事实；    C. Since意为“由于”，表已知的事实或显见的原因；D. As if 意为“好像”引导表语从句或引导方式状语从句；从文字的表层意思推断，“你整天坐在电脑前工作”表示已知的事实，判断空格用since，故选C。

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