no sooner... than...;
No sooner said than done.
一说就做到了。the moment...;
as soon as;
He started off as soon as he got the message.
他一接到通知就动身了。once
Once he arrives we can start. 他一到我们就可以动身。
on/upon + 名词/动名次
“on/upon”用作介词,后接名词或动名词作宾语,意为“immediately after, at the time
of”。
On his arrival at the airport, he was greeted by the Prime Minister.
他一到达机场便受到总理的欢迎。
immediately after
“immediately after”后接名词、代词或从句,相当于“as soon as”,意为“一……就……”。
I came immediately after lunch. 我一吃完午饭就来了。
7. hardly…when…
scarcely…when…
barely…when…
The game had hardly/scarcely/barely begun when it started raining.
比赛刚一开始就下起雨来了。