内容正文:
语法突破 写作指导
状语主要是用来修饰动词和形容词的,以表明动作发生或状态存在的时间、地点、原因等。状语从句则是用一个句子来代替上面的时间状语等。本模块主要是时间状语从句。
引导词和例句 含义 用法
when
Please call me when you have trouble. 当……时候 引导从句的时间是时间点和时间段;从句中的动词可以是终止性动词和延续性动词;遵循“主将从现”原则
while
I am reading while she is writing. 当……时候 引导从句的时间是时间段;从句中的动词要用延续性动词
as soon as
We began to work as soon as we got there. 一……
就…… 表示主句和从句的动作几乎同时发生;当主句用一般将来时,从句用一般现在时
before
He finished it before we got. 在……之前 主句的动作发生在从句的动作之前
after
I will go out to play after I finish my homework. 在……之后 主句的动作发生在从句的动作之后
until
I didn’t go to bed until my mum came back. 直到…… 主句为肯定句时,谓语用延续性动词;主句为否定句时,谓语为终止性动词
since
I have taught in our school since I came here. 自从……以来 主句谓语动词一般用现在完成时,从句谓语用一般过去时。
Ⅰ.单项选择
( )1.—I can hardly believe my eyes.Is that you,Lucy?
—Yes.It has been almost 20 years we were together.
A.since B.before
C.after D.until
( ) 2.Rose cooks meals at home on Sundays.She never eats her
mother comes back and she’d like to enjoy it together.
(2017恩