prosze sprawdzcie :)

czy moze ktos sprawdzic czy napisalem to poprawnie??a jesli nie, to czy moglby poprawic? :)
z gory dzieki.

He claims that one reason of this phenomenon could be changes in demography. The number og young people, who are the group that commits crime most often, is getting down.

He claims that most crimes are the result of unemployment. In the situation when the unemployment rates were low, the crime rates would be also getting down.

He claims that usage of new technology helps much to reduce crime.

He claims that the police's attitude to their work has changed since the Eighties. They improved their methods and are more succesful in what they are doing/ in chasing offenders.

The attitude of average people to crime and offenders has changed. People have become more willing to engage themselves in some actions that should help to reduce crime.

>
>He claims that one reason FOR this phenomenon could be changes in
>demography. The number oF young people, who are the group that commits
>crimeS most often, is DECREASING.
>
>He claims that most crimes are the result of unemployment. IF unemployment rates were low, XXX crime rates would
also DECREASE.
>
>He claims that (usage of) new technology helps much to reduce crime.
>
>He claims that the police's attitude to their work has changed since
>the Eighties. They HAVE improved their methods and are more succesSful in
>what they are doing/ in chasing offenders.
>
>The attitude of ORDINARY CITIZENS to crime and offenders has changed.
>People have become more willing to BECOME INVOLVED in some actions
>that should help to reduce crime.

Można by jeszcze wprowadzić kilka poprawek stylistycznych, ale one nie są bezwzględnie konieczne.