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hAvE BEEn Doing sth

have been doing sth.是现在完成进行时态,表示一直在发生的动作、一直存在的状态 如:1. I have been waiting for your phone call these days. 2. He has been watching TV since I came back.have been done 是现在完成时态的被动语态形式,...

现在完成时强调动作的结束 have been doing sth即现在完成进行时强调动作的持续 假如有for +一段时间 或者since+时间点 短暂性动词要改为延续性动词 如 he died two years age he has been dead for two years

1。有,这是完成进行时: 现在 过去 We have been doing sth…… We had been doing sth……… (其他人称不一一列举) 2。而 have been done 是被动完成时—— 用“have,has”为现在时,用“had”为过去时。 3。……being done 是用在被动进行时:(前面加...

一只在做某事 例:I have been studying French these days.

1 区别现在完成时和现在完成进行时 现在完成进行时是一兼有现在完成时和现在进行时二者基本特点的时态。由于它有现在完成时的特点,所以它可以表示某一动作对现在产生的结果或影响。由于它有现在进行时的特点,所以它也可以表示某一动作的延续性...

since是直到...时候,表示时间点 for是持续多长时间,表示一个时间段 in的用法我还真没见过... 希望能够帮到你!

一般常用的是have difficulty (in) doing sth而不是have difficult doing have difficulty (in) doing sth,表示“做某事有困难”。 如: I had the greatest difficulty in persuading him. 为了说服他,我费了好大的力气。 We have much difficu...

have sb.do sth:使某人做谋事The boss often has them work for 14 hours a day. 老板经常要他们一天工作 14 个小时. I'll have someone repair the bike for you. 我会让人为你修理自行车的.have somebody doing something “让某人一直干某事”T...

这是固定句型。如果非要说句子成分的话 应该是状语。=in doing sth

1. have sth done 叫某人这件事,(某件事被做) 2. have sth doing . 使某物持续做某事;使某物一直处于某种状态”,强调"持续",常接一段时间作状语. 如: 1). .I'll have my hair cut. 我打算去理发. 2). He has the machine working for a long ti...

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