2024年中考英语复习原因状语从句讲义（含部分答案）

中考英语原因状语从句详解
1）中考英语原因状语从句详解
中考英语原因状语从句是英语语法中的一个重要部分，它用于解释主句动作或状态发生的原因。以下是关于原因状语从句的详细知识点及例子：
一、引导词
原因状语从句通常由以下连词引导：because（因为），as（由于），since（既然），for（因为，由于），now that（既然），given that（考虑到），considering that（考虑到）等。这些连词在句子中起到连接和解释原因的作用。
二、语气与用法区别
because：语气最强，通常用来回答why提出的问题，表示直接且明确的原因。
例句：I didn't go to the party because I was feeling sick.（我没去参加聚会，因为我感到不舒服。）
as和since：通常用于表示已知或显而易见的原因，语气相对较弱。
as的例句：As it was raining, we decided to stay at home.（因为下雨，我们决定待在家里。）
since的例句：Since you're already here, you might as well help.（既然你已经在这里了，不妨帮个忙吧。）
for：不用于句首，而是对前面分句加以解释或说明原因，语气最弱。
例句：He seldom talks to others, for he is very shy.（他很少和别人说话，因为他很害羞。）
三、例句
because引导的原因状语从句
I had to cancel the trip because my car broke down.（我不得不取消旅行，因为我的车坏了。）
We didn't watch the movie because it was sold out.（我们没看那部电影，因为票已经卖完了。）
as引导的原因状语从句
As it was getting late, we decided to call it a day.（由于时间不早了，我们决定今天就此结束。）
As he was feeling tired, he took a nap after lunch.（因为他感到累了，所以午饭后他小睡了一会儿。）
since引导的原因状语从句
Since you're the oldest, you should set a good example for your younger siblings.（既然你是最大的，你应该为你的弟弟妹妹们树立一个好榜样。）
Since it's raining, we'll have to stay indoors.（既然下雨了，我们得待在室内。）
for引导的原因状语从句（注意，for引导的原因状语从句通常不放在句首，而是对前面分句进行解释或说明）
He didn't answer the phone, for he was in a meeting.（他没有接电话，因为他在开会。）
She was late for work, for she had overslept.（她上班迟到了，因为她睡过头了。）
given that / considering that引导的原因状语从句
Given that it's his first time, he did a pretty good job.（考虑到这是他第一次，他做得相当不错。）
Considering that she's been studying for so long, it's no surprise she's tired.（考虑到她学了这么久，她累了就不足为奇了。）
2）练习
一、单项选择题
1.We didn't go to the beach because _______ the bad weather.
A. of B. for C. with D. by
2.He had to stay at home _______ he caught a fever.
A. until B. before C. because D. after
3._______ she was tired, she still finished her homework.
A. Although B. If C. Unless D. Because
4.I didn't buy the new phone _______ it was too expensive.
A. so that B. such that C. because D. in order to
5.She couldn't attend the concert _______ she had to work that night.
A. since B. unless C. as soon as D. until
二、句子填空
_______ it was raining, we had to cancel our plans for a picnic.
_______ he was late, he missed the beginning of the movie.
We didn't go out last night _______ we had a lot of homework to do.
_______ she had no money, she couldn't buy the new book.
_______ he was feeling sick, he stayed in bed all day.
三、语法填空
Last week, I didn't go to the cinema with my friends _______ I had to prepare for an important exam. _______ I wanted to see the movie very much, I knew that studying was more important at that time. So, I stayed at home and reviewed all the notes and textbooks. Although I felt a bit lonely, I didn't regret my decision _______ it helped me get a good grade in the exam. My friends understood my reason and they supported my decision. We planned to watch the movie together after the exam. _______ I studied hard, I was still able to enjoy my free time with my friends.
语法填空答案：
because
Although/Though
because
Even though/Despite the fact that
解析：
第一空填“because”，用于解释前面句子“我没和朋友去电影院”的原因，即“我要准备一场重要的考试”。
第二空填“Although/Though”，引导让步状语从句，表示尽管我非常想看这部电影，但我知道学习在当时更重要。
第三空填“because”，解释“我不后悔我的决定”的原因，即“它帮助我在考试中取得了好成绩”。
第四空填“Even though/Despite the fact that”，表示尽管我努力学习，但我仍然能够享受和朋友们在一起的自由时光。