初中英语状语从句引导词
2025-07-27 10:23:18 0 举报AI智能生成
初中英语状语从句引导词
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大纲/内容
时间状语从句
when
表示当...时候
When I arrived, the meeting had already started.
When she was young, she dreamed of becoming a doctor.
用于主句和从句的动作同时发生
while
表示在...期间
While I was reading, the phone rang.
She learned English while she was living in the USA.
强调从句动作在主句动作进行时发生
as soon as
表示一...就...
As soon as I get home, I'll call you.
He started to work as soon as he finished his studies.
强调两个动作紧接着发生
before
表示在...之前
You must finish your homework before you watch TV.
She left before the meeting began.
用于表示一个动作在另一个动作之前完成
after
表示在...之后
After he ate breakfast, he went to work.
She called me after she arrived at the airport.
用于表示一个动作在另一个动作之后发生
since
表示自从...以来
I haven't seen him since he moved to Canada.
Since we started this project, we've made a lot of progress.
通常与完成时态连用
until/till
表示直到...为止
Stay here until I come back.
He worked until midnight.
用于表示一个动作持续到另一个动作发生为止
原因状语从句
because
表示因为
I didn't go to the party because I was ill.
She was happy because she passed the exam.
用于直接说明原因
since
表示既然，因为
Since you don't like it, we won't go there.
Since it is raining, we should take an umbrella.
用于表示已知或显而易见的原因
as
表示由于，因为
As it was getting late, we decided to leave.
As he was tired, he went to bed early.
用于表示原因，语气比because弱
for
表示因为，用于补充说明理由
It must have rained, for the ground is wet.
He was late for the meeting, for he missed the bus.
通常放在主句之后，用逗号隔开
条件状语从句
if
表示如果
If you study hard, you will pass the exam.
If it rains, we will cancel the picnic.
用于表示假设的条件
unless
表示除非
You won't pass the test unless you study harder.
We will go out unless it rains.
用于表示否定的条件
as/so long as
表示只要
As long as you try your best, it doesn't matter if you fail.
So long as you are happy, I am happy.
用于表示条件，强调只要满足某种条件
让步状语从句
although
表示尽管
Although it was raining, we went out for a walk.
Although she is young, she knows a lot.
用于表示尽管有某种情况，但主句所述
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