内容正文:
教材精讲练贵州英语(课标版)
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命题点 3 状语从句
(3 年 3 考:2023. 2ꎬ2021. 51ꎬ2023 省一模 47 题ꎻ涉及题型:完形第一节、句子翻译、语法填空)
考点精讲
考向 1 引导词
1. 引导时间状语从句的连词(短语)
连词(短语) 含义 用法 例句
while 当时
when 当时
具体用法和例句见本表后面的“何时用 whenꎬ何时用 while的判定方法”ꎮ
until / till 直到
until和 till通常可以换用ꎬ但是 till不
用于句首ꎻ“ not until / till”意为“直
到才”ꎮ
You may stay here until the snow
stops.
She didnt go to bed until she had
finished her homework.
before 在之前 主句的动作发生在从句动作之前ꎮ
Did she leave a message before she
left?
after 在之后 主句的动作发生在从句动作之后ꎮ
Molly showed me lots of beautiful
pictures after I got to her home.
since 自从
从句用一般过去时ꎬ主句常用现在完
成时ꎮ
I have worked in this company since I
came to this city.
as soon as
一
就
从句动作一发生ꎬ主句的动作随即发
生ꎬ若从句用一般现在时ꎬ主句常用
一般将来时ꎮ
I will visit you as soon as I come back.
何时用 whenꎬ何时用 while的判定方法:
(1)若主句的动词是短暂性动词ꎬ从句的动词是延续性动词ꎬ则 when和 while都可用ꎮ 如:
Our teacher came into the classroom when / while we were chatting.
(2)若主句和从句表示两个同时进行的持续性动作ꎬ则要用 whileꎮ 如:
My mother was cooking dinner while I was reading a book.
(3)若从句的动词是短暂性动词ꎬ则要用 whenꎮ 如:
It was raining when she arrived at the station.
(4)若主句和从句的动作不是同时发生ꎬ而是有先后顺序ꎬ则要用 whenꎮ 如:
I will study abroad when I have enough money.
(5)when可作并列连词ꎬ意为“这时(突然)”ꎬwhile也可作并列连词ꎬ意为“而ꎬ却”ꎮ 如:
He was ready to leave home when the phone rang.
I like watching action movies while she likes watching comedies.
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教材精讲练贵州英语(课标版)
第
二
部
分
语
法
专
题
精
讲
练
2. 引导条件状语从句的从属连词(短语)
连词 含义 用法 例句
if(2023. 2ꎬ2023
省一模 47 题)
如果
若从句用一般现在时ꎬ主句常
用一般将来时ꎮ
If it doesnt rainꎬ I will go on a picnic with my
friends.
unless 除非
unless可以转化为“ if not ”
结构ꎮ 主从句时态与 if的用法
一致ꎮ
You will be late for school unless you go now. =
You will be late for school if you dont go now.
as long as 只要 主从句时态与 if的用法一致ꎮ Ill stay as long as you need me.
3. 引导原因状语从句的从属连词
连词 含义 用法 例句
because 因为
表示因果关系的语气最强ꎬ用来回答
why引导的问句ꎬ所引出的原因通常是听
话人不知道或最感兴趣的ꎮ
I cant go shopping with you because I have to
look after my little sister.
since 因为ꎻ既然
表示因果关系的语气比 because弱ꎬ引出
的原因通常是人们已知的事实ꎬ因此经
常译为“既然”ꎮ
Since everyone is hereꎬ let