Переведите предложения на российский язык. Обусловьте, является ли глагол "to have"

Переведите предложения на российский язык. Определите, является ли глагол "to have" смысловым либо вспомогательным.
1. Informal rules have very little to do with the laws created by
governments.
2. English law has developed through decisions in individual cases.
3. The system based on English Common law has been adopted by many Commonwealth countries and most of the United States.
4. When they were codifying their legal systems they looked to the examples of Revolutionary and Napoleonic France.
5. Versions of Roman law had long influenced manyj parts of Europe but had little impact on English law.
6. Many customs have existed since "time immemorial".