As I soon learnt,he was English himself!请问这个as I

As I soon learnt,he was English himself!请问这个as I As I soon learnt,he was English himself.As I soon learnt是状语从 As I soon learnt,he was English himself! As I soon learnt ,he was English himself as I soon learnt,he was English himself.为什么要用was.as , As I soon learnt, he was English himself! 为什么是he was而不是he is As I soon learnt,he was English himself.这里 as 的用法. 句子As I soon learnt,he was English himself!为什么不是an English hi as i soon learnt 今天看了新概念英语,里面有一句话是这样的,as i soon learnt,he was a english himse "As I soon learnt"是什么样的句型?谢谢 As I soon learnt (我很快就了解到）这里的as是什么意思?