Rain exists since the world formed. / It is raining since the world formed.
Rain exists from the beginning of the world.
How can we say them in the correct way?
Precipitation (rain, sleet, hail and snow) has existed since the earth developed an atmosphere with temperatures and pressures consistent with water bring in its liquid and gaseous phases. edu/globalchange1/current/lectures/Perry_Samson_lectures/evolution_atm /
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Precipitation (rain, sleet, hail and snow) has existed since the earth developed an atmosphere with temperatures and pressures consistent with water bring in its liquid and gaseous phases.
https://www.globalchange.umich.edu/globalchange1/current/lectures/Perry_Samson_lectures/evol
kumenglishsince the world formed
When you have a since-clause like this, one that signals the beginning of a time period, you usually use the present perfect, not the simple present or present continuous, in the main clause:
Rain has existed since the world formed.
Also,
Bob doesn't see a movie since his sist