as soon as
as soon as — 慣用語
1. used to show that one event happens immediately following another, with little o
一…就…
表示緊接發生的時間關係
used to show that one event happens immediately following another, with little or no delay in between — for example, you do one thing right after another thing finishes.
Mei called her mother as soon as she landed in Tokyo.
Mei 一抵達東京就打了電話給媽媽。
as soon as + past simple for past events
As soon as Hassan finished his homework, he ran outside to play football with neighbours.
Hassan 一寫完功課，就跑到外面和鄰居踢足球。
main clause after comma following 'as soon as' clause
Please text us as soon as you arrive at the station so we can meet.
你一到車站就請傳訊息給我們，我們可以去接你。
The fire alarm went off as soon as the toast started burning in the kitchen.
廚房裡的吐司一開始燒焦，火災警報器就響了。
As soon as Sofia saw the puppy at the shelter, she decided to adopt it.
Sofia 在收容所一看到那隻小狗，就決定收養牠。
- once
More formal and often emphasises a condition ('Once you sign the form, the process begins')
- the moment (that)
More emphatic about immediacy ('The moment she opened the door, she smelled the cake')
- when
Weaker — does not stress immediacy; a general time relationship ('When I was in Paris, I visited the Louvre')
- before
Indicates the opposite sequence ('Call me before you leave' vs 'Call me as soon as you leave')
文法句型
as soon as + clause (present simple for future; past simple for past)
main clause + as soon as + clause (optional position)
用法筆記
Unlike 'when', which can describe a general time relationship, 'as soon as' emphasises that the second event follows the first without delay. Frequently used in instructions and promises ('I will call you as soon as I hear anything'). No future tense ('will', 'going to') is used inside the clause after 'as soon as' — use the present simple instead.