as soon as 可以放在句首吗?

as soon as 可以放在句首吗?
I will tell him as soon as I see him.我一看到他就会告诉他.
能不能把As soon as I see him 提到前面去,可以的话,后面用不用加个
逗号?
2.翻译的时候：as soon as后面紧跟的句子，是不是翻译为 "一......
另外一个句子翻译成“就。:-)