the new secretary is supposed to report to the manager as soon as she arrives.为什么要用arrive?

问题描述:

the new secretary is supposed to report to the manager as soon as she arrives.为什么要用arrive?
还有就是she指的是secretary 还是manager?

arrive可以当作不及物动词用,后面可不接宾语,如换成reach需接宾语.
She指magager我的意思是为什么要用这个时态?不用将来时吗?as soon as 不跟将来时,因为表示"一。。。就。。。"