Как переводится who, whose, where and which и в каких случаях что используется??

who - кто
whose - чей
where - где
wich - какой

Who-кто, какой. Употребляется с одушевленными существительными единственного числа.
whose-который, каков. Употребляется с одушевленными существительными множественного числа.
where-где.
which- который (е) . Употребляется с неодушевленными существительными множественного числа.

In 18th Century London, the areas of the city 1 WHERE rich people lived had street lamps. However, poorer areas of the city were full of streets 2 WHICH had no lights. And streets 3 WHICH were dark were often full of muggers, murderers and other
criminals! Rich people 4 WHO journey home at night passed through these poor areas needed to take some form of lighting with them. A link boy was a boy 5 WHO showed rich people the way home through the back streets. The children 6 WHO did this job needed to have a map of the city in their heads. They also needed to be aware of the dangers 7 WHICH might be around any dark corner. And the money was not good. The rich people 8 WHOSE lives the link boys made safer normally paid only one penny per trip.

Как переводится, см. вот здесь --
http://www.multitran.ru/c/m.exe?l1=1&l2=2&s=who
http://www.multitran.ru/c/m.exe?l1=1&l2=2&s=whose
http://www.multitran.ru/c/m.exe?l1=1&l2=2&s=where
http://www.multitran.ru/c/m.exe?CL=1&l1=1&s=which