1、首先是词性的区别:across为介词,而cross为动词.
(动词为“穿过,横穿”,名词为“十字,十字路口”)
2、当然across必须与through 区别开来.across为“横穿”,与“道路”交叉形成“十字”.而through为在立体空间中的“穿过”.如:go through the forest“穿过森林”,go across the street “穿过大街”
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through表示“贯通、直穿、透过、穿过”的意思,即是从一头(边)贯穿到另一头(边).
例The river runs through our city.这条河流经我们市.
He passed through the hall.他穿过大厅
across表示“横穿、横过、横渡、横跨”
例:I swam across the Changjiang River 20 years ago.
20年前我横渡了长江.
Look left and right before you go across the street.
过马路时要左右看.
through,across和over的区别
①、through:穿过
I threw it through the window.
Is it quicker to drive round the town,or straight though the centre?
②、across:from one side to the other
(在平面上)越过,在/到……对/面,横过.
I can’t swim across the river.
我不能游到河对岸.
He went across the hall to the door.
他越过大厅到门口.
③、over:翻越过
across和over两者都表示从一侧向另一侧的运动:
She drove over /across the bridge.
但如果越过的是一个高的物体,则用over:
He climbed over the wall.
如果越过的是一个平面,则宜用across:
He went across the hall to the door.
across和through都表示“穿过”,“通过”的意思,across表示从物体表面“穿过”、“通过”;而through则表示从内部“穿过”、“通过”.
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