immmediately conj. 一...（就），immediately引导的时间状语从句中用过去完成时或现在完成时。
例句：
Immediately he had finished tea, he rose with alacrity to go out.
一吃完茶点，他就匆忙起身外出。
Immediately I've done it, I feel completely disgusted with myself.
我一做完那件事就对自己感到十分厌恶。
immediately可以引导任何时态
例句
1.
I'm not going to defer decisions just because they are not immediately politically popular.
我不会因为它们没有即刻在政治上受到欢迎就推迟作出这些决定。
2.
The police left immediately, and rushed to the scene of the accident.
警察即刻出发，火速赶到出事现场。
新人教版高中英语必修第二册有immediately 这个单词，因此这是高中要掌握的词汇，但是有些中学会拓展词汇，像我初中的资料书上就会有这个单词.
1/immediately释义：
adv. 立即，立刻；直接地
conj. 一…就
2/例句：
You should stop this dangerous climbing game immediately.
你应该立刻停止这种危险的攀爬游戏。
3/immediately初中词汇有：
immediately after立即；接在…之后
immediately following紧跟着
reply immediately速复