6.C我习惯于住在被用来存放书籍杂志的房子里
过去常常做某事used to do sth
习惯于做某事be used to doing sth
被用于做某事情be used to do sth
7.C
定语从句
A. 以下情况多用that.
(1) 如果先行词是all, much, anything, something, nothing, everything, little, none等不定代词，关系代词一般只用that，不用which。例如：
All the people that are present burst into tears.
Is there anything that I can do for you?
(2) 如果先行词被the only, the very, the same, the last, the best等词修饰，关系代词常用that(指人时，可以用who),例如：
This is the very book that I want to find.
That is the best film that we have seen.
I was the only person in my office that/who was invited.
(3) 当先行词被all, every, no, some, any, little, much所修饰时；
You can take any seat that is free.
(4) 当先行词被序数词或形容词最高级所修饰时。
It is the first foreign book that I have ever seen.
This is the most beautiful flower that I have seen.
(5) 在there be句型中，常用that.
There is a man that lives in that village.
(6) 先行词有两个，一个指人，一个指物，关系代词应该用that。例如：
The boy and the dog that are in the picture are very lovely.
B. 以下情况用which.
(1) 当关系词前面有介词时，指物常用which.
The prize for which he worked so hard was a new bike.
He built a telescope through which he could study the skies.
(2) 非限制性定语从句指物时，多用which.
Bamboo is hollow, which makes it light.
He wrote an article, which tells us about the computer.
(3) 如果先行词本身是that时，只用which.
This is that which he bought yesterday.
(4) which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。在这种从句中，which可以作主语，也可以作宾语或表语，多数情况下意思是与and this 相似，例如：
He succeeded in the competition, which made his parents very happy.
8.D
after、since（自从）表示……之后
when表示当时
只有before表示之前
过去常常做某事used to do sth
习惯于做某事be used to doing sth
被用于做某事情be used to do sth
7.C
定语从句
A. 以下情况多用that.
(1) 如果先行词是all, much, anything, something, nothing, everything, little, none等不定代词，关系代词一般只用that，不用which。例如：
All the people that are present burst into tears.
Is there anything that I can do for you?
(2) 如果先行词被the only, the very, the same, the last, the best等词修饰，关系代词常用that(指人时，可以用who),例如：
This is the very book that I want to find.
That is the best film that we have seen.
I was the only person in my office that/who was invited.
(3) 当先行词被all, every, no, some, any, little, much所修饰时；
You can take any seat that is free.
(4) 当先行词被序数词或形容词最高级所修饰时。
It is the first foreign book that I have ever seen.
This is the most beautiful flower that I have seen.
(5) 在there be句型中，常用that.
There is a man that lives in that village.
(6) 先行词有两个，一个指人，一个指物，关系代词应该用that。例如：
The boy and the dog that are in the picture are very lovely.
B. 以下情况用which.
(1) 当关系词前面有介词时，指物常用which.
The prize for which he worked so hard was a new bike.
He built a telescope through which he could study the skies.
(2) 非限制性定语从句指物时，多用which.
Bamboo is hollow, which makes it light.
He wrote an article, which tells us about the computer.
(3) 如果先行词本身是that时，只用which.
This is that which he bought yesterday.
(4) which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。在这种从句中，which可以作主语，也可以作宾语或表语，多数情况下意思是与and this 相似，例如：
He succeeded in the competition, which made his parents very happy.
8.D
after、since（自从）表示……之后
when表示当时
只有before表示之前
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第1个回答 2012-12-30
be used to doing sth, 习惯于做某事。记着这个词组前有be,后有ing.
be used to do sth 被用于做某事。
have +过去分词，现在完成时，表示“已经”。be动词的过去分词是Been.
I have been used to living, 我已经习惯了住在....
was used to keep books 被用来放书
整句：我已经习惯了住在一个之前被用来放书的房间。
be used to do sth 被用于做某事。
have +过去分词，现在完成时，表示“已经”。be动词的过去分词是Been.
I have been used to living, 我已经习惯了住在....
was used to keep books 被用来放书
整句：我已经习惯了住在一个之前被用来放书的房间。
第2个回答 2012-12-30
我用最简洁的话向你解释下，不浪费你宝贵的时间
1. sb be used to doing 某人习惯于做某事
sth be used to do sth 某物被用来做某事
当然，前半句若有 sb used to do这个选项也是可以的，表示过去常常做某事
2. the way 有三种接法 that, in which,不填(即that的省略用法)
选项that 符合
3. It will be some time before 固定用法表示多少多少时间以后发生何事，这种句型分析一下不难，可以看出是若干年在前，化学物质逸出容器在后，就是说现在这么保存不必担心跑不出来的
1. sb be used to doing 某人习惯于做某事
sth be used to do sth 某物被用来做某事
当然，前半句若有 sb used to do这个选项也是可以的，表示过去常常做某事
2. the way 有三种接法 that, in which,不填(即that的省略用法)
选项that 符合
3. It will be some time before 固定用法表示多少多少时间以后发生何事，这种句型分析一下不难，可以看出是若干年在前，化学物质逸出容器在后，就是说现在这么保存不必担心跑不出来的
第3个回答 2012-12-30
分别是CCD
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