To perform an action or task.

क्रिया करना

English Usage: I will do my homework later.

Hindi Usage: मैं बाद में अपना होमवर्क करूंगा।

Used to refer to a thing previously mentioned or easily identified.

यह

English Usage: It is raining outside.

Hindi Usage: बाहर बारिश हो रही है।

A party or gathering.

समारोह

English Usage: We're having a do next weekend.

Hindi Usage: हम अगले सप्ताहांत एक समारोह कर रहे हैं।

A particular thing or situation.

यह

English Usage: The best part of it is the view.

Hindi Usage: इसका सबसे अच्छा हिस्सा दृश्य है।