as soon as引导什么从句?
as soon as引导时间状语从句,表过去,又可以表示将来。
表达意思:as soon as意思是“一……就……;一经;不久后,一会儿”。
例句:As soon as he got inside, the dog shook himself.
他一进来,狗就开始摇头摆尾。
扩展资料:
“as soon as”的用法:
1、指未发生的动作。时态规律是“主将从现”,即主句用一般将来时,从句用一般现在时代替一般将来时。
I’ll tell him the plan as soon as I see him.
我一看到他就告诉他这个计划。
He’ll go home as soon as he finishes his work.
他一完成工作就回家。
2、如果强调过去发生的两个动作有先后关系,从句谓语动词可以用过去完成时。例如:
As soon asthey(had)returnedfrom London,they drove to see their sick aunt.
他们一从伦敦回来,就开车去看望他们患病的姨妈。
3、hardly…when...它的意思是“几乎未来得及做完A这件事,紧接着就开始B这件事。”
使用这个短语时,一般用于过去完成时;并且when有时可改用before。例如: He had hardly finished the article when the light went out.他刚写完文,灯就熄了。
另外,如果把hardly放于句首,主句要用倒装结构即谓语动词要提前。如:Hardly had I finished eating when he came in.我刚吃完他就进来了。
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as soon as引导的状语从句。
一般情况下,时间和条件状语从句的谓语动词一般用“一般现在时”表示“一般将来时”,用“现在完成时”表示“将来完成时”。例如:
I will call you as soon as I arrive in Beijing. 我到北京就将给你打电话。
这是由as soon as引导的时间状语从句,从句中的谓语动词arrive是一般现在时,表示一般将来时,绝不可用will arrive
As soon as I have finished this work, I will have gone home.如果我早点完成工作的话,我现在已经到家了。
从句中的谓语动词用现在完成时have finished,表示将来完成时,绝不可用will have finished
扩展资料
引导词——
1、常用引导词:
when(在…时), as(当…时), while(在…期间), before(在…之前), after(在...之后), since(自从...以来) , not...until(直到…才)until/till(直到…时)等
2、特殊引导词:
the minute, the moment, the second, every time, the day,the instant( 瞬间,顷刻), immediately , directly(不久,立即), no sooner … than(一...就...), hardly …when(刚一...就...) 。
3、当用no sooner … than,hardly …when,scarcely … when作为引导词的时候,从句要部分倒装。