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高中英语语法大师来啊1Bear sb sb's doing sth这个结构中的sb's doing sth是什么用法?2

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高中英语语法大师来啊
1Bear sb sb's doing sth这个结构中的sb's doing sth是什么用法?
2Seeing that he has been off sick all week这里的 off sick 两个都是形容词怎么放一起了
3On approaching them,we saw it were dogs求逗号前那个的语法
4Eager to learn Chinese,he went to buy some books也是求逗号前那个的语法用法
1Bear sb sb's doing sth这个结构中的sb's doing sth是什么用法?
答:bear应该是单宾动词,估计是bear sb./ sb.'s doing sth.动名词的逻辑主语,用名词的所有格,如果作宾语的话,口语中可以用普通格,就如:Do you mind Tom's (/Tom) opening the door?
2Seeing that he has been off sick all week这里的 off sick 两个都是形容词怎么放一起了
答:是表语同位关系off是副词,sick是形容词.就如:You are here in the room.中here 与in the room,是同位关系,互为补充,其实都是表语.
这是一个分词短语,其中that-从句是seeing 的宾语从句.
He has been off sick all week.是He has been off and he has been sick all week 的合写.
off是副词,本意指电器的一种状态“关”,用于人,表示“不工作”的状态.可以理解为“生病在家不上班整一周”.
3On approaching them,we saw it were dogs求逗号前那个的语法
On doing sth.= as soon as sb.did sth.表示一.就.
如:On hearing the news,she burst into tears.
而Hearing the news,she burst into tears= When she heard the news,.
本题句中it与them不符.与were不一致,应为they之笔误.
4Eager to learn Chinese,he went to buy some books也是求逗号前那个的语法用法
答:作状语的,不仅是非谓语动词短语,还可以是形容词短语.其实可以看作是省略.
相当于:As he was eager to learn Chinese,he went to buy some books.由于急着要学汉语,他去买了一些书.