_____ we were swimming in the river,we saw a fish jump out of the river.A.When B.While 请问到底选哪个?为什么?

_____ we were swimming in the river,we saw a fish jump out of the river.A.When B.While 请问到底选哪个?为什么?
_____ we were swimming in the river,we saw a fish jump out of the river.
A.When B.While 请问到底选哪个?为什么?

_____ we were swimming in the river,we saw a fish jump out of the river.A.When B.While 请问到底选哪个?为什么?
b,
while可表时间段,表状态,某个动作持续发生,有持久意思.
when表一个时间,表时间点,一般不和进行时用.

B. while 表示的时间更长一点，可以表示一个时间段。
在我们游泳期间。。。我们看见鱼。。。。

A
语感
while ：强调一边在做会什么一边又在做什么