They have been doing their homework能改成:he has been doing their homework 吗?have改成了has
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Theyhavebeendoingtheirhomework能改成:hehasbeendoingtheirhomework吗?have改成了hasTheyhavebeendoingtheirhomew
They have been doing their homework能改成:he has been doing their homework 吗?have改成了has
They have been doing their homework
能改成:
he has been doing their homework 吗?
have改成了has
They have been doing their homework能改成:he has been doing their homework 吗?have改成了has
he has been doing his homework
不能,应改成he has been doing his homework
当然也可以拉!他一直在替他们做作业嘛。
根据语境啦,如果你是中学生的话,最好还是把their 改成his,意思直白一点比较好。
what have they been doing 是什么时态
have been doing sth
They have been doing their homework能改成:he has been doing their homework 吗?have改成了has
they shoud never do what they have been doing for many
have been doing 神马意思?
what you have been doing
Where have they been?
has been doing have been done区别
They can’t have been doing their homework ---doing是什么词性?have been 在这里还是表现在完成时吗
have been doing ,have done和have doing区别
i has been doing 还是i have been doing
They can't have been doing thier homework.have been 是现在完成时,但是后面do为什么要变成doing?They can't have been doing thier homework.这句话 have been 是现在完成时,但是后面do为什么要变成doing?为什么不用do呢?
现在完成进行时的被动语态结构是have been +过去分词还是have been+doing例如:They have been collecting some stamps since2000Some stamps have been collected by them since 2000
have been doing 为什么还有 have been deadj
have been do和have been doing的不同
They can't have been doing their homework请问can't have been是对刚才所发生的事的推测吗?
They have a____ been there
have been doing,had been doing,will have been down是什么