A): When our class gets to Houbihu, a guide will be there to help us.
B): While we are snorkeling, we will see coral reefs below us.
C): When an earthquake hits, Internet users fill the Net with news about the quake in around 20 seconds.
(1). 請問When跟While在使用上 有特別的現制嗎? 所有的When都可以用While取代嗎?
(2). 例句A和B 的補充連接句都是用未來式will, 但例句C的補充連接句卻是用現在式, 要如何判別補充連接句應該用哪一種式呢? Thanks a lot.