There is work to be done. have done 和 have been done 是 两种不同的完成时态结构，它们的区别和用法如下： 1. have done 是 现在完成时态 的结构，用来表示过去某个时间点以来一直延续.
Sethmeyers
Done For Laughs Nyt This Joke Had Audiences Walking Out. 例如这句话:looked at in this way,the situation doesn't seem so disappoint.我用having been look… 也就是 there are tasks to be completed there is work to do (一般这种情况下 work指 工作 不可数,. 1、have done：have done表达即时性操作。 2、have been done：have been done表达延续性操作。 三、用法不同 1、have done：侧重于后主语，事。 i have finished my homework.我已.
Done In 疲倦不堪 Had Done 过去完成时 扩展资料 同近义词 1、Cooked 美 [Kʊkt] Adj.
煮（cook的 过去式 、过去分词形式） 短语 steam cooked 蒸煮的 cooked flakes 熟胚 cooked. have done 是 现在完成时态 的结构，用来表示过去某个时间点以来一直延续. There is work to be done.
Done常用于完成时态的句子中，如I Have Done My Homework.（我已经做完了我的作业。） 由于时态和含义的不同，Done和Did在句子中的用法也有所不同。Done常用于描述已经完成的动作.
例如这句话:looked at in this way,the situation doesn't seem so disappoint.我用having been look… have done 和 have been done 是 两种不同的完成时态结构，它们的区别和用法如下： 1. 如何正确理解 had done、have done、have been doing 这 3 种时态？ 语法书上的那些解释，看来看去都不是很能理解，也谢绝照搬语法书的解释。 看一次，过一段时间又忘了，总不是能很.
也就是 There Are Tasks To Be Completed There Is Work To Do (一般这种情况下 Work指 工作 不可数,.
1、have done：have done表达即时性操作。 2、have been done：have been done表达延续性操作。 三、用法不同 1、have done：侧重于后主语，事。 i have finished my homework.我已. 1、being done：与be动词一起构成现在进行时的被动语态（am/ is/ are being done）和过去进行时的被动语态（was/ were being done）。 2、done：done用于完成时，表示已经做好了，一. 首先, there are tasks to complete.
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