这两句话语法都对吗?

题目

这两句话语法都对吗?
He lives far away.
He lives far off.
这两句话都对吗?随便问一下far和away的区别,还有他们的常用词组,希望能说的详细一点,
一楼的,“off指物”什么意思,说的再清楚一些,

答案

far
形容词 a.
1.远的;遥远的;久远的
Manchester is farther from London than Oxford is.
曼彻斯特比牛津离伦敦远.
How far is it from your office to the bank?
你的办公室离银行多远?
2.较远的;那一边的;对面的[B][Z]
He lived on the far side of the hill.
他住在山的那一边.
3.(政治立场)极端的[B]
He belongs to the far left.
他属于极左派.
副词 ad.
1.远;遥远地;久远地
It happened far back in the past.
这事发生在久远的过去.
He didn't go far.
他没有走远.
2.到很深的程度;到很远的距离[(+into)]
He often works far into the night.
他常常工作到深夜.
They went far into the forest to pursue the wounded bear.
他们深入森林,追捕那只受伤的熊.
3.到很大程度;很;极
It turned out far better than I had expected.
结果比我预料的好得多.
The room was small and contained far too much furniture.
房间太小,而家具太多.
名词 n.
1.远方;远处[U]
You haven't far to go now.
away
副词 ad.
1.离开[(+from)]
He hasn't been away from home before.
以前他从没有离开过家.
2.(用在名词后)隔开...远;尚有...时间
The hotel is only two miles away.
旅馆离开这里只有两英里.
3.不在;外出
Harry is still away.
哈里还是不在.
4.消失;(用)光;完,...掉
At last,the music died away.
音乐声终于渐渐消失.
5.继续不断地
She was typing away in the little room.
这样的对比差别应该很明显吧~常用词组貌似也在例句中被包括了~