《2021学年八年级英语寒假讲义（人教版）》第9讲-状语从句专题 学生版

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第9讲 状语从句专题 学生版
一、课前热身
单句语法填空
1. _________ he was speaking, everybody listened carefully.
2. _______ he’s old, he can still carry this heavy bag.
3. You should make a good plan ______ you do anything important.
4. I can hardly believe _____ you say.
5. As I looked around, I realized that there were dozens of other people at the park no one else stopped to help
this boy.
6. She wouldn't forget her mother's birthday __________ she hardly wrote to her family.
7. We’re doing everything we can to make things as easy for you ___________we can.
8. The meeting was so disorderly __________ the speaker had to shout the audience（听众） down.
9. They will help you __________you meet with difficulty.
10. I wonder _______ the life will be like in 2050.
二、知识梳理
状语从句的概念
用一个句子(从句)来作另一个句子(主句)的状语，用作状语的句子就叫作状语从句，根据作什么样的状
语就叫什么类型的状语从句可分为：时间状语从句，条件状语从句，原因状语从句，结果状语从句，比较
状语从句，目的状语从句，例如：
My teacher told me not to make noise in class.
Watching movies help me learn English.
The man standing under the tree is my father.
I had my hair cut yesterday.
用法详解
1. 时间状语从句：
(1) 时间状语从句中，主句是一般将来时或祈使句，从句通常用一般现在时表示将来的意义，简称“主将
从现”。
I’ll ring you up as soon as I get to Hangzhou. 我一到杭州就会给你打电话。
(2) when, while, as 表示当……时
①when 表示点时间时，从句中用短暂性动词；表示段时间时，用持续性动词。
When I got home, my family were already having dinner.
（when 表示点时间）
When they were still talking and laughing, the teacher came in.
（when 表示段时间）
②while 通常表示一段时间，从句中宜用持续性动词作谓语。
She fell asleep while she was reading the newspaper.
注意：while 有时可以作并列连词，表示对比，可译成……而……。
I am fond of English while he likes maths.
③ as
a.as 表示点时间时，从句中用短暂性动词；表示段时间时，用持续性动词。as 和when 两者经常可以通用。
The thief was caught as/ when he was stealing in the supermarket.
b. as 表示 一边……一边……，强调从句和主句中两个动作交替进行或同步进行。
They talked as they walked.
c. as 表示随着
As time goes on, it's getting warmer and warmer.
(3) before 引导的时间状语从句表示主句的动作发生在从句动作之前；意为“在….之前”。
after 引导的时间状语从句表示主句的动作发生在从句动作之后；意为“在….之后”。
Check it carefully before you hand it in.
I will tell you after they leave.
(4) until/till 引导的时间状语从句
① 主句的谓语动词是延续性动词时，主句用肯定形式，表示这一动作或状态一直延续到 until/till
所表示的
时间为止。
I’ll wait for you till you come to see me. 我会一直等到你来看我。
② 主句的谓语动词是非延续性动词时，用否定形式表示主句的动作直到 until 所表示的时间才发生。构成
句式 not…until，有时候不用 not, 而用其它的如 never, nothing 等表示否定意义的词。
I didn’t go to bed until I finished my homework.
(5) as soon as，表示从句动作一发生，主句动作随即发生，通常译为“一……就”。
As soon as I finish the work, I'll go to see you. 我一完成工作就会来看你。
I shall come as soon as I've finished my supper. 我一吃完晚饭就来。
(6) since 自从
since 引导的从句用非延续性动词或“过去时间点”或“过去时间段+ago”，主句用现在完成时态。
Since he graduated, he has worked in this city. 他毕业后一直在这个城市工作。
I haven't seen him since last year/ three years ago. 去年以来/3 年来，我没见过他。
2. 条件状语从句：
(1)条件状语从句通常由 if, unless, as long as(只要)引导。例如：
What shall we do if it snows tomorrow?
Don’t leave the building unless I tell you to.
As long as you keep on trying, you will surely succeed.
(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态，即“主将从现”例如：
I’ll help you with your English if I am free tomorrow.
He won’t be late unless he is ill.
(3)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。例如：
Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.
Study hard and you will pass the exam. =If you study hard, you will pass the exam.
3. 原因状语从句：
(1)原因状语从句通常由 because, since, as 引导。例如：
He didn’t come to school because he was ill.
As it is raining, we shall not （不得；不应该）go the zoo.
Since you can’t answer the question, I’ll ask someone else.
《2021学年八年级英语寒假讲义（人教版）》第9讲-状语从句专题 学生版.docx

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作者：envi 分类：初中 价格：3知币 属性：14 页 大小：52.4KB 格式：DOCX 时间：2025-03-24

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