高一英语,急!!!!!!!!!!!!!!!!!!!!!!!!!!!

【括号里为答案】( C)he regularly checked his secret drawers,_______were stored some precious paintings and jewels.
A that B which Cwhom Dwhose【为什么不选B,这里where怎么作主语?】
( D)Tom ,_____help Mike climbed the mountain,was one of the first professional guides.
Awho Bwhose Cwith whom Dwith whose【为什么不选A】
(D)About a thousand species of animals are in danger of extinction,and the rate___the are being destoryed has increased.
A.which Bthat Cby which Dat which【求解释】
(C)Those were the assistants________to do the research work in the lab.
A.to whom it was their responsibility Bwhose responsibility there was
C.whose responsibility it was Dof whom responsibility was
【求解释】

1. 他定期检查他的秘密抽屉,抽屉里存放了一些名画和珠宝。
此举是where引导的非限定性定语从句,修饰drawers,在那里(抽屉)存放了名画和珠宝,肯定是where表地点的来引导。
2. 汤姆是第一批专业向导中的一个,在他的帮助下,迈克曾攀登了那座山。
可以很容易排除A选项,假如选A,Tom 是第三人称单数,后面就应该是helps,对吧。其实,with whose 就是with Tom's help, help 在这里是名词。作此题的关键是找准句子主谓宾。Tom was one of ……,中间部分是非限定性定于从句修饰说明Tom。
3. 大约有一千多种物种正在濒临灭绝,并且物种被破坏的速度已经加速。
后半句已经是完整句,the rate are being ……,让选择的话肯定是定于从句修饰主语“速度”,固定介词搭配,at.....rate以怎样的速度,所以选at which。
4. 那些助手的职责就是在实验室做调查工作。这句复杂在句子里面包含了强调句,it is/was ……。强调句型没有单复之分,有时态之分,固定句型就是it is/it was……。修饰人并且是做主语部分所以选择C。
希望能帮到你,你可以仔细体会一下。这几句都是考察定语从句,包括限定性和非限定性,属于语法内容。
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