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谁能告诉我这些语法题的解法,以及所考的考点.必有重谢!

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谁能告诉我这些语法题的解法,以及所考的考点.必有重谢!
1.little__about his situation though he was in great danger himself.
A does he care B did he care 请告诉我选a的原因
2.I'm thinking about changing careers,but I don't quite know how to__it
Ago about Bgo around Cgo by Dgo for 主要是c d分不清
3.The new president is reported __China after he takes office in the capital.
Ato visit Bto have visited Cto be care Dvisiting
这题能重点说说
4 I am playing golf this afternoon,weather __
Apermits Bpermitted Cpermitting Dto permit
5 It was not until December 31__we heard from him
Awhich B when Cat Dthen
6.At one time we had about eighty people here who did nothing but __ into various family history.
A reserched Bresearch Cresearching D to research
这题一定重点说说
7 Your hair needs__ .You'd better have it done tomorrow
A cut Bcutting Cto cut D being cut
希望都能详细些,好的话还会有财富悬赏的!
谁能告诉我这些语法题的解法,以及所考的考点.必有重谢!
1 这个就该选B,不选A,考的是倒装句和主从时态,从句中是was,是说他过去情况危急,主句也应该是他那时候就不在乎,不能选现在时态.
2 go by 有很多意思,一个是时光流逝Time went by slowly,一个是顺便拜访She was in when I went by yesterday,一个是根据..判断You can't go by what he says; he's very untrustworthy(你不能根据他的话来判断,他很不可靠).go for 的意思是竭力想取得;喜爱;支持,拥护,在这句话里用的是竭力想取得,我想换工作可是不知道如何去努力.
3 这句话是说据报道新总统在首都就职后要访问中国,当然是还没发生的事情,选A.B相当于将来完成,肯定不对,D是现在进行,也不对,C就不说了.
4 选C.这个是If the weather permits的独立主格形式,如果天气允许的话,这里天气是允许的发出者,是主动关系,所以用的是permitting.
5 选B.强调句的关联词填什么要看被强调的部分在句子里做什么成分,until 12.31显然是时间状语.
6 选A.只需要看but就够了,but虽然表示转折,但是就像and一样,两边的成分是并列的,形式必须一样,这里并列的是did nothing 和空白处,所以选A.意思是我们80个人一度什么也不做只调查他的家谱.
7 选 B,“need”作为实义动词需要时,通常用法是:
人+need +to do
物+need +doing
物+need +to be done ,
这里用的是第二项,一定注意 物+need doing是表被动的.