while ,the moment ,once 用法区别(英语语法)
2个回答
1.While 通常是用来把长动作和长动作串联起来的连词.eg:I was watching TV while my brother was playing computer at this time yesterday.2.the moment 通常在前面加at 来作为时间状语用,意为：此刻;当时.eg:I am very busy at the moment.我此刻/现在很忙.moment 还有其他的用法.例如：a moment ago （用过去时） at that moment （用过去时或过去进行时） 等等.3.once 有不同的解释.(列举了ABC三种)A.副词 ad.
a.一次,一回
I see them once every two months.
我每两个月与他们见一次面.b.昔日,曾经
He once knew her,but they are no longer friends.
他以前认识她,但他们已经不是朋友了.B.名词 n.a.一次,一回
Once is enough.
一次就够了.
C.连接词 conj.
a.一旦,一经...便
Once you get into a bad habit,you'll find it hard to get out of it.
一旦染上坏习惯,想改掉就难了.
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