across介词和副词有什么区别?

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across介词和副词有什么区别?
1个回答 分类:英语 2014-10-10

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用作介词和副词的across
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用作介词和副词的across
1.用作介词或副词,注意以下用法:
(1) 表示动态意义,意为“横过”、“到……的另一边”.如:
I cam swim across the river in 10 minutes.我可以在十分钟之内游过河去.(介词用法)
  Can you swim across?你能游过去吗?(副词用法)
(2) 表示静态意义,意为“在……的另一边”.如:
My house is just across the street.我家就在街道对面.(介词用法)
We leave Dover at ten and we should be across in Franceby midnight.我们十点钟离开多佛,午夜时应能抵达法国那边.(副词用法)
有可与介词from 连用,表示“从……的另一边”.如:
He shouted to me from across the room.他从房间的另一边向我喊.
(3) 表示“交叉”(介词用法) 或“从一边到另一边的宽度”(副词用法).如:
He sat there with his arms across his chest.他坐在那儿,两臂交叉放在胸前.(介词用法)
The river is half a mile across.这条河半英里宽.(副词用法)
2.不要将across 误用作动词.如:
不能说:The river is too deep and we can’t across.( www.yygrammar.com)
可改为:The river is too deep and we can’t cross.河水太深,我们过不了.
3.用于come [run] across,意为“偶然遇见”、“意外发现”(不用于被动式).如:
Where did you come [run] across her?你在那儿碰到她的?
I’ve just come across a beautiful poem in this book.我在这本书里偶然发现一首优美的诗.
 
 
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