We swam across the river这里ACROSS充当的是介词?

We swam across the river这里ACROSS充当的是介词? He swam across the river last year.为什么用across I swam across是什么意思 介词和副词的区别在下面的几个句子中的across哪个是介词,哪个是副词?He suddenly saw Mary across the room.a bridge across the river.We swam across the river.We can't swim across.He couldn't get the idea across to the class.请 The sun rose at half past five.一般疑问句：否定句：16.We swam across the river yesterday.一般疑英语不好,教教我吧.快,快 The dog swam ___ the river.A.cross B.on C.through D.across you can see the river across which the boy swam把这句话分析一下 the man swam (across/through) the changjiang river last year括号里应该选哪个 Did you swim across the river Have you swam across the river?这两句话有什么区别 We are across the sea Litter Ben swam across the river_______(成功）为什么是successfully? The swimmers all swam across Changjiang River （）.（success）动词填空! .Another two pupils _________(success) swam across the Qiongzhou Channel on June 2.2005 We walked ________ a forest and swam ________ a river,and at last we arrived there.A.across; acrossB.through; acrossC.across; throughD.through; through Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen ye we swam in the river.we were young at that time同义句 We learn （A. swim B.swims C.swam D.to swim) in the pool in summer we had great fun ___ in the water 1.play 2.swimming 3.sang 4.swam