作介詞穿過的區別
through / past / across 區別: 都可作介詞，“穿過”，前常有位移動詞(以下黑體部分)。
He climbed through the window and saw what he could take away. （從窗戶內部經過）
He went past me without saying any words. （從我旁邊經過）
He swam across the river. （從河的表面經過）
位移動詞 + past 有時相當於動詞pass; 位移動詞 + across有時相當於動詞cross.
