_____ we were swimming in the river,we saw a fish jump out of the_英语解答

_____ 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?

人气：196 ℃　时间：2020-01-29 01:15:00

解答

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.