मैं एक पत्र लिखने जा रहा हूँ।
Step 1: Understanding the Hindi Sentence:
The sentence "\begin{hindi}मैं एक पत्र लिखने जा रहा हूँ।\end{hindi}" (Main ek patra likhne ja raha hoon) expresses an immediate future intention. The structure "\begin{hindi}जा रहा हूँ\end{hindi}" (ja raha hoon) in this context means "am going to."
Step 2: Analyzing the English Options:
- (A) I am going to write a letter: This uses the "going to" future form, which is used for plans and intentions. This perfectly matches the meaning of the Hindi sentence.
- (B) I have been writing a letter: This is present perfect continuous, meaning the action started in the past and is still continuing. This is incorrect.
- (C) I write a letter: This is simple present, used for habits or general truths. This is incorrect.
- (D) I was writing a letter: This is past continuous, describing an action in progress in the past. This is incorrect.
Step 3: Final Answer:
The most suitable translation is I am going to write a letter.
नदियों को प्रदूषित नहीं करना चाहिए।
सच्ची मित्रता दुर्लभ है।