Resident status for income tax purpose

I and my wife have got Green Card (Permanent residency) of USA in August 2018 . In 2018, we left India in November and did not work in USA, thus I was resident for the financial year 2018-19. In the year 2019-20, we shall be in USA for about 8  months and remaining 4 months in India. I, shall work in USA on temporary  contact basis as a teacher in leave arrangement (My wife will remain housewife). I have no Bank account in USA. I am supposed to file Tax return in USA and had filed it for the year 2018.

My queries are:-

1. What will be my resident status, for the purpose of Income Tax,  for the FY year 2019-20?
2. Shall opening of bank account in USA alter my residential status?
3. And what shall be resident status of my wife?

J B Goel