英语中“一...就...” 的表达方式丰富多彩,现将其表达形式及用法总结如下：
1、 as soon as
as soon as 是最常见的表达方式，前一个as 是副词，后一个as 是连词，引导时间状语从句。注意：
⑴as soon as所指的动作发生在另一分句所指的动作之前。
如：He made a phone call to me as soon as he came back.他一回来就给我打了个电话（回家在前，打电话在之后）。
⑵as soon as引导的从句可以放在主句之前，也可放在主句之后。
如：As soon as he came back, he paid a visit to me. = He paid a visit to me as soon as he came back.他一回来就来看我。
⑶as soon as 可用于一般现在时、一般过去时或完成时，主句的动词用现在时、过去时或将来时。
例如：We will go outing as soon as he returns. 他一回来，我们就去郊游。
He started as soon as he received the news. 他一得到消息就出发了。
As soon as I had got on the bus, my grandma said“good goodbye”to me我一上车，外婆就向我说再见
2、when/whenever/just when
在一般人眼里，when这个词就是“…时候”，“在…时候”的意思，其实不然，它也有“一…就…”之意，作连词,常常和just连用。比如：
（1） He had just drifted off to sleep when the phone rang.他刚睡着电话铃就响了。
（2） I had just finished the magazine when supper was served. 一读完杂志，饭就端上来
（3） I’ll visit him whenever I get the chance.一有机会我就会去看望他。
注意：如果把just放到句首，其句型结构、用法就和hardly/scarcely/barely…when一样，just引导的句子要had倒装，后面的句子用正常语序，一般为过去时态。比如：
Just had Dick left home when it began to rain. 狄克一离开家，天就开始下雨了。
Just had he gone to bed when the telephone rang. 他一上床睡觉，电话铃就响了。
3、once
once作副词讲是“一次”，“曾经”等意思，但作连词讲就作“一旦”，“一…就…”讲，相当于“as soon as, from the moment that”.例如：
（1） The water is fine once you’re in! 你一下水，就会觉得水里挺舒服！
（2） Once Mr Wang arrives we can start. 王先生一到我们就可以动身。
注意⑴：once引导时间状语从句，常常隐含条件。请看2001春季高考第14题：
--Did you remember to give Mary the money you owed her?
--Yes. I gave it to her ______I saw her.
A. while B. the moment C. suddenly D .once
答案：B
分析：不少学生误选D，但“once”隐含条件，意为“一旦……就……”，该句理解成“我一旦见到他就把钱给了他”显然不符合上下文的语境，故排除D。“the moment”看似名次词组，但实际上用作连词，引导时间状语从句，故应选B。
⑵：once后面的从句中常可采用省略结构。
Once seeing it (＝Once you see it )，you can never forget it.
Once seen ( = Once it is seen )，it can never be forgotten.
一（旦）见到了就永远不会忘记。
4、at+名词或动名词
⑴at后的名词或动名词，一般是sight, thought, sound, hearing, idea或者see，hear，think等情感、感观动词, 组成结构为：at the sight/hearing/sound/(bare)thought/idea of或者at seeing/hearing/thinking等，翻译为：一看到/听到/想到…就…。句中的谓语动词用一般过去时。
如：At hearing the news, he rushed out. 一听到这个消息，他就冲出去了。
At the sight of the police officers they ran off.一看见那些警官,他们便逃跑了。
On the other hand, My stomach will turn at the thought of frying food in animal fat. 另一方面，我一想到动物油炸食品就会反胃。
I was so miserable at the idea of you in trouble.一想到你有麻烦，我就很痛苦。
At the bare thought of her lost baby, she would burst into tears.一想到丢失的孩子,她就会泪流满面。
⑵另外还可以用at the(mere)/(very) mention of当说到…；一提到…就…, at the first opportunity(chance)一有机会就…等, 例如：
I feel sick at the mere mention of blood 一提到血，我就恶心
I’d like to pay a visit to her at the first opportunity.我一有机会就去看望她。
⑶at＋名词或动名词多放在句首，但直接加名词常放到后面。比如：
At seeing her mother，the girl burst into tears. 一见到母亲，那女孩就放声大哭起来。
He was in tears at the news that his grandpa died yesterday. 他一听到他爷爷昨天过逝的消息就哭了。
They threatened to call the police. At this, the police pointed out ironically that this would hardly be necessary as the men were already under arrest. 他们威胁说要去叫警察。警察一听到就讥讽地说，这大可不必，因为他俩已被逮捕了。
5、on/upon ＋ 名词/动名词
on/upon为介词，后接名词或动名词作宾语，表示它所表达的动作刚一发生或完成，句子谓语所表示的动作就接着发生，所接动词基本是短暂动作，如：arrive, reach, hear, see, receive, enter, get, step, leave等。它相当于as soon as 引导的时间状语从句，意为immediately after, at the time of。例如：
On his arrival at the school, he was warmly welcome by all the teachers and students. 他一到达学校就受到全体师生的热烈欢迎。
On arriving home I found they had gone. 我一到达家就发现他们已经离开了。
There was a letter waiting for him on his return.他一回来就有一封信在等着他看。
On seeing this, she burst into tears. 一看到这种情景，她就哭了。
6、directly/ immediately/instantly
⑴directly作副词讲意思是：1、直接地;笔直地2、正好，恰好；截然。例如：
She drove directly to school.她开车直接去学校。
His political views are directly opposed to mine.他的政治观点与我的截然相反。
directly也可作连词用，常用于非正式文体或口语中，相当于as soon as。比如：
I went home directly I had finished work. 我一干完活就回家了。
He came directly I called.我打了电话他就来了。
⑵immediately作副词用是：立刻/即；紧接，接近等意思。但作连词讲是一…就…, 相当于as soon as，主要用于英式英语中。比如：
Return immediately you are done.事情一做完就回来。
Immediately she’d gone, I remembered her name. 她刚走开我就想起了她的名字。
⑶instantly作副词讲意为：立即,马上。例如：
The police came to my help instantly.警方立刻来帮助我。
作连词时，和immediately的意思和用法一样，如：
I came instantly I saw the need.一发觉有必要走一趟我就来了。
I telegraphed instantly I arrived there.一到那里我就发电报。
I recognized her instantly I saw her. 我一看见她就把她认出来了。
7、immediately / instantly/ directly +after
在第6个用法点中，我们看到，directly/ immediately/instantly这三个词的用法基本相似，但是如果在他们后面加上after, 不仅可以接从句，还可以接名词、代词，相当于“as soon as”，意为“一……就……”，习惯上将其放在句子尾部，主句的谓语动词通常用过去时。例如：
I came immediately after breakfast. 我一吃完早饭就来了。
I made contact with him immediately after I received the letter. 我一接到信就和他联系了。
The machine will start instantly after you press the button.你一按电钮机器就会开动。
They had a meeting to sum up our experience immediately after finishing the work.工作一结束，他们立即开会总结经验。
8、① hardly…when…② scarcely…when…③ barely…when…④ no sooner…than…
这四个短语，结构和用法类似，只是前三者常和when匹配，而no sooner和than搭配; 意义相同，等于as soon as；hardly/scarcely/barely和no sooner放在when和than之前。例如：
The race had hardly/scarcely/barely begun when it started raining. 比赛刚一开始就下起雨来了。
The race had no sooner begun than it started raining.比赛刚一开始就下起雨来了。
注意:
hardly/scarcely/barely和no sooner否定词位于句首时，句中的主语和谓语必须部分倒装，而“when/than”从句部分语序不倒装； hardly/scarcely/barely和no sooner引导的是主句，表示它的动作发生在从句之前，故常用过去完成时， 而when和than引导的从句只能与一般过去时连用。例如：
Hardly/Scarcely/Barely had the race begun when it started raining.
No sooner had the race begun than it started raining.
Hardly had we started our journey when the car got a flat tyre.
另外，前三者除了和when搭配外，还可以与before配用。比如：
Hardly/scarcely/barely had we sat down at the table when the phone rang.= Hardly/scarcely/barely had we sat down at the table before the phone rang.我刚在桌子旁坐下电话铃就响了。
再者，该句型含“惊奇”之意。如：
Mr wang had no sooner left the room than the students began to chat about her.王老师刚离开房间，学生就议论起她来了。
Scarcely/Hardly/Barely had she begun to speak when we sensed that she was in trouble.
她刚一开口，我们就感到他遇到麻烦了。
No sooner had we set out than a thunderstorm broke.我们一动身就遇上了大雷雨。
They had hardly started their journey when the car got a flat tyre. 他们刚出发，车胎就漏气了。
9、① the moment ② the minute ③ the instant ④ the second
在这些结构中，the moment, the minute, the instant, the second看似名词词组，但实际上用作conj.，引导时间状语从句，相当于as soon as。例如：
I recognized her the instant I saw her我一看到她，就认出她来了。
We recognized the star the moment we saw him.我们一看到那个明星就认出他来了。
The minute I saw him I knew he was angry.我一见到他就知道他生气了。
The second they arrived in Hohhot,, the soldiers joined the herdsmen(牧民)in the work.士兵们一到呼和浩特就和牧民一起劳动。
另外，这几个词后面可以加that，含义不变，比如：
I want to see him the minute/ instant/second/moment that he arrives. 他一到我就要见他。
10、soon / right / just + after
这是几个用得很普遍的单词，他们的意思类似just when，一…(马上/即刻)就…，但是短语结构却和directly/ immediately/instantly + after一样，后面可以接名词、动名词和句子。例如：
John arrived soon after two. 两点刚过约翰便到了。
The turtles return to the sea soon after they have laid their eggs.海龟一产完卵就返回大海。
Just after putting the baby onto bed, his wife suddenly caught sight of the doll panda.刚好把孩子放到床上，他妻子就看到玩具熊猫了。
The representatives recommend that for 60 to 120 minutes each evening, right after the early evening news, all television broadcasting in the United States be prohibited by law.代表们建议每天晚上一播完晚间新闻，美国所有的电视节目都依法停播60至120分钟。
