how to use ''रहा''
मैं अखबार पढ् रहा हूं
In this sentence, how to change the past form and future form?

Question

how to use ''रहा''
मैं अखबार पढ् रहा हूं 
In this sentence, how to change the past form and future form?

Answer

मैं अखब़ार पढ़ रहा था। ( I was reading a newspaper.) - past continuous
मैं अखब़ार पढ़ रहा हूँ। ( I am reading a newspaper. ) - present continuous
मैं अखब़ार पढ़ रहा होऊंगा। (I will be reading a newspaper.)  - future continuous.

Answer

I might be incorrect, but I would kindly suggest:
Past form: मैं अखबार पढ् रहा था or मैने अख़बार पढ़ा |

Future form: मैं अखबार पढ़ुंगा |

Answer

rha this same meaning in english is 'ing' . In english sentance whre fourth form verb is used in hindi rha used

Answer

मैंने  अखबार पढ़ा ।  =   भुत काल =  Past  Tense.