Yellowstone is believed to have been the world's first natio
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Yellowstone is believed to have been the world's first national park.帮我解释其中的语法:
![Yellowstone is believed to have been the world's first natio](/uploads/image/z/7356407-23-7.jpg?t=Yellowstone+is+believed+to+have+been+the+world%27s+first+natio)
sb.is said/ believed/hoped/ .+ to do 结构...翻译成 据说,据认为,据希望...
=It is said/ believed/ hoped + that-从句
to do 是不定式原形,不定式还有进行时 to be doing
完成时 to have done 表示已经发生,发生在过去或发生在谓语动词前.
黄石公园据认为是世界第一个国家公园.第一个国家公园是 发生在过去和谓语动词前的,所以用不定式完成时.
=It is said/ believed/ hoped + that-从句
to do 是不定式原形,不定式还有进行时 to be doing
完成时 to have done 表示已经发生,发生在过去或发生在谓语动词前.
黄石公园据认为是世界第一个国家公园.第一个国家公园是 发生在过去和谓语动词前的,所以用不定式完成时.
Yellowstone is believed to have been the world's first natio
The novel is believed to have been translated into Chinese.
The book is believed to have been translated into English.=
求翻译.The novel is believed to have been translated into Chine
It is the first time I have ever been to China.It is the fir
It's the first time I have been to the US,______
英语翻译British doctors have helped to perform the world's first
Have you ever been to the Summer Palace?—No.It is the first
This is the first time (that) I have been to the summer pala
肯德基 三面 our passion is to be the people 's first in the world
I have always believed that the world is love,but i don't kn
--Have you ever been to our town before?--No,it is the first