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has been on是什么时态

回答
瑞文问答

2021-09-08

现在完成时,但一般都这么说:have/has done,have/has been done,是现在完成时的被动语态。现在完成时表示到说话时为止(或到现在为止)已经发生或完成了(不一定结束)的动作或状态。过去某一时间开始并一直持续到现在,并且有可能还会持续的动作或状态。

扩展资料

  Have 表示动作,如表示“吃(=eat)”“喝(=drink)”“拿(=take)”“收到(=receive)”“度过(=spend)”等时,在用法应注意以下几点:

  (1) 可用于进行时态,但一般不用于被动语态。如:

  误:Lunch is had by him.

  正:He is having lunch. 他在吃中饭。

  (2) 不与 got 连用。如:

  误:I’d like to have got a look at it.

  正:I’d like to have a look at it. 我想看看它。

  (3) 一般不用缩略式。如:

  误:We’d a good time at the party.

  正:We had a good time at the party. 我们在晚会上玩得很高兴。

  (4) 构成否定式和疑问式时,必须用助动词 do。如:

  误:When had you breakfast?

  正:When did you have breakfast? 你什么时候吃早餐?

  表达将来时的.几种结构:

  be going to do

  表示最近打算进行的事,具有一定的目的性和计划性.(这种安排既有可能是主语做出的,也有可能是别人安排 的)

  We are going to have a meeting tomorrow.

  表示即将要发生的事情,不可避免要发生的事情.(多用于表天气)

  It's getting cloudy. It is going to rain.