as soon as
as soon as 意义为“一…就” ，引导时间状语从句，可置于句首或句末，最常见的用法是在将来时态的情境中，遵守“主将从现”，的原则，i.e.
1. I'll write you as soon as I get there.
我一到那儿，就给你写信。
2. They will post the tickets to me as soon as they receive my cheque.
他们收到我的支票后就立刻把票寄给我.
3.Let us start as soon as he comes.
等他一来我们就动身。
当然也有用在过去时态的情境中，i.e.
I arranged the flowers in the vase as soon as I came back home.
一回到家里，我就把花在花瓶里插好。
As soon as his father went out, the boy ran to the cinema.
爸爸刚出门, 那男孩就跑向电影院。
希望能帮上你~~
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