All the preparations for the project ______,we’re ready to start.AAll the preparations for the project ______,we’re ready to start.AA.completed B.have been completedC.had been completed D.been completed能不能 having been completed?

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All the preparations for the project ______,we’re ready to start.AAll the preparations for the project ______,we’re ready to start.AA.completed B.have been completedC.had been completed D.been completed能不能 having been completed?
All the preparations for the project ______,we’re ready to start.A
All the preparations for the project ______,we’re ready to start.A
A.completed B.have been completed
C.had been completed D.been completed
能不能 having been completed?

All the preparations for the project ______,we’re ready to start.AAll the preparations for the project ______,we’re ready to start.AA.completed B.have been completedC.had been completed D.been completed能不能 having been completed?
不能
completed在这里作状语

因为一个句子中只可以是一个主语 谓语的，像这个句子前半部分和后面的是两个主语，也就是不同的逻辑主语，这个时候我们就只能选非谓语动词，一般非谓语动词只有三个形式：-ed,-ing,to do.这里的complete 和project是动宾关系，所以我们要用被动，选A。...

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因为一个句子中只可以是一个主语 谓语的，像这个句子前半部分和后面的是两个主语，也就是不同的逻辑主语，这个时候我们就只能选非谓语动词，一般非谓语动词只有三个形式：-ed,-ing,to do.这里的complete 和project是动宾关系，所以我们要用被动，选A。

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没有having been done 的这种用法，completed表示一种已经完成的状态。

all the preparations for the task__im ready to start(to complete)为什么不填completed? 这个由被动变主动 正确吗All the preparations for the task have been completed and we aer ready to startWe have completed all the preparations for the task and we aer ready to start All the preparations for the project ______,we’re ready to start.AAll the preparations for the project ______,we’re ready to start.AA.completed B.have been completedC.had been completed D.been completed能不能 having been completed? all the preparations for the task___,and we are ready to startA.completed B.complete C.had been completed D.have been completed All the preparations for the task _____,and we're ready to start.A.completed B.complete C.had been completed D.have been completed All the preparations for the task ________ and we’re ready.to start.A.completed B.complete C.had been completed D.have been completed 为什么用have been completed而不用are completed?All the preparations for the discussion have been completed and we are ready to start. the manager gives you some time to make preparations _____any time ____to you to make preparations All of the preparations for the lask ------been completed and we're ready to start.All of the preparations for the task ------been completed and we're ready to start.A.have B.has C.had 理由,应选什么,选B,好不好,为什么 preparations to get the business off to a good start enough preparations are the best cure for anxiet We are making _(preparation/preparations)for the final examination 把下列句子变为被动语态.1,she has told me about the story.2.We have completed all the preparations for the tast,abd we are readyto start. i'm afraid all the preparations we have made were for ___because the visit was cancelled.A everything B something C nothing D anything the answer is C,区别能说清楚下吗 高中英语语法题,说明原因1.It is recommended that the project ___until all the preparations have been madeA it not startedB will not be startedC no be startedD is not to be started 33-It is recommended that the project _____ until all the preparations have been made.-A.-is not started -B.-will not be started -C.-not be started -D.-is not to be started It is recommended that the project _____ until all the preparations have been made.A.is not started B.will not be startedC.not be started D.is not to be started All the preparations for the task ____,we were ready to startA completedB completeC had been completed D have been completed 为什么选A呢?选C不行吗,直接用过去完成时?