Нужно внимательно осмотреть трубу.

The pipe needs to be inspected carefully.

Breakdown of Нужно внимательно осмотреть трубу.

• нужно: necessary
• внимательно: carefully
• осмотреть трубу: to inspect the pipe

Questions & Answers about Нужно внимательно осмотреть трубу.

Why is there no subject in this sentence?

Russian often uses impersonal sentences where English would say something like it is necessary... or one needs to....

Нужно внимательно осмотреть трубу literally means something like:

• It is necessary to inspect the pipe carefully
• The pipe needs to be inspected carefully

There is no named subject like I, you, or we. The sentence just states a necessity in a general way.

If you want to say who needs to do it, Russian can add a dative noun or pronoun:

• Мне нужно внимательно осмотреть трубу = I need to inspect the pipe carefully
• Нам нужно внимательно осмотреть трубу = We need to inspect the pipe carefully

What exactly does нужно mean here?

Нужно means it is necessary, need to, or must, depending on context.

In this sentence, it expresses necessity in a fairly neutral way. It is not as forceful as a direct command, but it still clearly says the action should be done.

Common English equivalents:

• need to
• it is necessary to
• sometimes must

So Нужно внимательно осмотреть трубу can be understood as:

• We need to inspect the pipe carefully
• The pipe must be inspected carefully
• It is necessary to inspect the pipe carefully

Why is осмотреть in the infinitive?