从句分析Theabilitytoguardcustomerdataisthekeytomarketvalue,whichtheboardisresponsibleforonbehalfofshareholders.请帮忙分析下这句话的从句类型,和使用方法.

Question

从句分析
The ability to guard customer data is the key to market value,which the board is responsible for on behalf of shareholders.
请帮忙分析下这句话的从句类型,和使用方法.

Answer 1

The ability to guard customer data作主语,the key to market value作表语.which引导一个非限制性定语从句指代前面的整个句子
　1. which 可以引导一个修饰整个句子的非限制性定语从句,其意义相当于 and this 或 and that .如：
　　（1） They have again invited me to visit their country, which is very kind of them.
　　（2） Some bikes are made of plastic, which makes them very light.
　　2. as 可以引导一个非限制性定语从句,常常有“正如……”的意思.这种定语从句既可置于主句之前,也可置于主句之后.如：
　　（1） As is known to all, water is an important kind of natural resource.
　　（2） People in this country are not so expressive, as is often the case in Britain.
　　非限制性定语从句,就其意义来说,在结构上往往相当于一个并列句,但从形式上看,它与前面主句的关系比并列句要显得紧凑,而表达又比较自由.我们应学会使用非限制性定语从句,在做书面表达时,它能使你的英语文句显得流畅、地道.