abap里面 while 有and的用法吗
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while 解析版
while引导状语从句,有以下两种含义:
1.表示某个动作正在进行的同时,另一动作也在进行之中,这时主从句都用进行时态,有对同类的两个动作进行对比的意味。如:
While I was playing the piano,she was dancing.我在弹钢琴,她在跳舞。
While Jim is picking apples,Kate is carrying apples to the truck.吉姆正在摘苹果,凯特正在把苹果搬到卡车上去。
while引导状语从句,有以下两种含义:
1.表示某个动作正在进行的同时,另一动作也在进行之中,这时主从句都用进行时态,有对同类的两个动作进行对比的意味。如:
While I was playing the piano,she was dancing.我在弹钢琴,她在跳舞。
While Jim is picking apples,Kate is carrying apples to the truck.吉姆正在摘苹果,凯特正在把苹果搬到卡车上去。
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