★ The car whose wheels have been stolen was bought yesterday.(属格关系代词whose在定语从句中用作定语，指物，即car，可以用of which代替，但后者较为正式)
That在定语从句中既可以用作主语，也可以用作宾语(在非正式文体中可省去);既可以指人，也可以指物。如：
★ These methods include strength training that duplicate what they are doing in their running events as well as plyometrics, a technique pioneered in the former Soviet Union.(关系代词that在定语从句中用作主语，指物)
★ Put another way, basic heath-care is now recognized as a ‘public good', rather than a ‘private good' that one is expected to buy for oneself.(关系代词that在定语从句中用作宾语，指物)
★ The students that hold a foreign degree seem to be more confident and independent.(关系代词that在定语从句中用作主语，指人)
which在定语从句中既可以用作主语，也可以用作宾语;一般皆指物(在非正式文体中可省去)。如：
★ Eye position in freshwater dolphins, which often swim on their side or upside down while feeding, suggests that what vision they have stereoscopic forward and upward.(关系代词which在定语从句中用作主语)
★ Those surveyed had experienced chronic illnesses, for which orthodox medicine had been able to provide little relief.(关系代词which在定语从句中用作宾语，可以省去)
which在从句中也可以被用作定语和表语。如：
★ His money had been stolen, which news annoyed him.(关系代词which在定语从句中用作定语)
★ They were completely mistrusted, which in fact, they were.(关系代词which在定语从句中用作表语)
关系代词在从句中用作介词宾语时，介词可以位于从句之首，也可以位于从句之末。但以位于从句之首较为正式。如：
★ This has been encouraged through programs of language classes fro children and through ‘apprentice' scheme, in which the endangered language is used as the medium of instruction to teach people a traditional skill.(关系代词which在定语从句中用作介词in的宾语，介词位于定语从句之首，即which之前)
★ This has been encouraged through programs of language classes fro children and through ‘apprentice' scheme, which the endangered language is used as the medium of instruction to teach people a traditional skill in.(介词in位于定语从句之首，which在此可以省去)
