I have had a DVD for a week.这句话为什么用had a DVD.解释为我买DVD已有一周了.

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/06/28 06:40:43

I have had a DVD for a week.这句话为什么用had a DVD.解释为我买DVD已有一周了.
The weather has been cold so far this winter.这句话.so far.还有为什么用has been.这个been cold应该怎么理解它.

就是一个过去完成时,表示在过去的一段时间里面持续,have/has down结构,第一个用的had,它是have的过去完成式,第二个里面的been则是be的过去完成式,如果是表示现在的“天气很冷”,可以说The weather is cold,换成过去完成时则应该是has been cold,至于so far意思是“到目前为止/到现在为止”,understand?

I have had a DVD for a week.这句话为什么用had a DVD.解释为我买DVD已有一周了. Will we have a DVD player? Have you even watched a DVD about china if I had the money,I would have bought the DVD player. i sent her a dvd and she's watched it I o____ it and saw a DVD inside. I like to watch DVDs .这个DVD后面为什么要加s?我知道是DVD的复数形式,但是在这句话里why? SONY DVD激光头 KHS-313A 上的两个可调电阻分别调节到多大阻值,我这点有台DVD被我调后,现在碟子不会转了 i have had a few students ask me for advice about this.这句话有语 I've got a new DVD.什么时态 I've是什么的缩写 a DVD player的复数形式是什么,求求 Jenny _______[visit]China before ,but I sent her a DVD about