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关于upon doing 相当于as soon as..的用法

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关于upon doing 相当于as soon as..的用法
i will call you as soon i get to shanghai.
请问用opon doing如何表示呢,什么时候应该用它.
还有在定语从句中way 有两种形式 可以加in which,也可以是that,请问这应该如何用呢,
关于upon doing 相当于as soon as..的用法
1.我就用上面的例子来说明吧
I wil call you as soon as I get to shanghai=I wil call you upon getting to shanghai
2.当先行词为way并且定语从句中缺少状语时,通常用in which或that引导定语从句(in which或that可省略);如果定语从句中不缺少状语,则用关系代词引导(that 或which 可省略).例如:
All of us disliked the way(in which / that)Tom settled the maths problem.
I don’t understand the way(that / which)the teacher explained to me.
当way在从句中作状语时,in which=that,例子如上
再问: 可以改成I wil call you upon i getting to shanghai吗?
再答: 不行,upon是介词,后面不能接完整句子啊