首先看一下SEE的用法.see sb do sth 和see sb doing sth.
第一种是看见某人做某事
第二种是看见某人正在做某事.
这个语境应该用第二种.
cross是动词,那自然是有ING型式.
across是副词,副词是没有ING型式的
When I looked out of the window I saw her crossing the road.
When I looked out of the window I saw her crossing the road.
问下 为什么过马路是crossing the road .为什么不是acrossing the road?过马路不是across the road么?
问下 为什么过马路是crossing the road .为什么不是acrossing the road?过马路不是across the road么?
英语人气:508 ℃时间:2019-08-20 15:10:52
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