to be doing和to have been (求助中……有这个用法吗?)
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to be doing和to have been (求助中……有这个用法吗?)
to be doing 不是不定式表将来吗?
to be doing 不是不定式表将来吗?
to be doing正在做某事 (其实就是现在进行时)
to have been doing过去正在做某事,现在还在做(通常表示延续)
当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.
例:I'm singing(我在唱歌)
She has been playing the piano for 5 years.(她已经弹了5年钢琴).(她以前在弹,现在还准备弹下去).
不定式表将来是:going to do sth.
例:I'm going to have a good sleep.(我要好好睡一觉).
be doing也可以表将来,"进行时表将来.
例:She is flying to England in a week.(她一周后要飞往英国)
to have been doing过去正在做某事,现在还在做(通常表示延续)
当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.
例:I'm singing(我在唱歌)
She has been playing the piano for 5 years.(她已经弹了5年钢琴).(她以前在弹,现在还准备弹下去).
不定式表将来是:going to do sth.
例:I'm going to have a good sleep.(我要好好睡一觉).
be doing也可以表将来,"进行时表将来.
例:She is flying to England in a week.(她一周后要飞往英国)
to be doing和to have been (求助中……有这个用法吗?)
be going to doing有这个用法吗
be said to be doing和be said to have been doing的区别
to have been doing 和 having been doing 有什么区别,重点是have 和having
在现在完成时中,“have been to","have gone to","have be 加adj." 的用法有什么
to do / to be doing / to have done / to have been doing/doin
to be done to have been done to have been doing 形式的造句,
amaze的用法be amazed to do和be amazed doing有区别吗?
求助英语帝……有没有understand sb doing sth的用法呢 及lead to sb doing sth
have been to的用法和注意事项
be going to doing这种用法有吗?
有这用法吗so adj to be doing