While 连词: 1.引导两者对比的句子、表然而的意思。例:I like reading books , while he likes playing games with kids . 2.引导时间状语时、表当什么时、一般主句和从句的谓语都用做进行时。同时,While引导的句子的谓语要是延续性动词。而when所引导的句子的谓语可以是延续性的动词也可以是非延续性动词。这是它们两者的最大区别处。例:My mum was washing clothses , while my dad was watching TV . When I reached there , he has left . When I came here , he was writting a letter .while 名词 一会儿的意思。
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