nachweisen

Use nachweisen when you need to present evidence. This could be for a skill, an identity, or a fact. It often involves a formal or semi-formal context. You might need to nachweisen, for example, your income for a loan. Or a scientist might nachweisen, how a chemical reaction works. It’s active proof-giving.

• A student needs to nachweisen their enrollment for a discount. Did you bring your student ID? That's how you nachweisen it.
• The company requires you to nachweisen your travel expenses. Keep those receipts organized!
• The detective tried to nachweisen, that the suspect was at the scene. Evidence is key here.
• You might have to nachweisen your identity at the airport. Your passport does the nachweisen job.
• Can you nachweisen, your qualifications for this job? Your CV and certificates are your proof.

Use nachweisen when you need to provide concrete proof. This is common in official settings. Think job applications, legal matters, or academic requirements. You use it when someone asks for verification. It’s the go-to verb for presenting evidence. It implies a successful demonstration of truth or ability. It’s like saying, 'Here is the proof you asked for.'

Don't use nachweisen for simple statements or opinions. If you're just saying you like pizza, you don't nachweisen that. You simply state it. Avoid it for informal claims where proof isn't expected. Saying 'I nachweisen I'm tired' sounds weird. Just say 'I'm tired!' It's not for everyday, casual beliefs. It's too strong for that. You also don't nachweisen abstract concepts without evidence. Think about it: you can't nachweisen love without actions.

Learners often confuse nachweisen with simpler verbs like zeigen (to show). While related, nachweisen implies a more rigorous proof.

Another mistake is using it when beweisen (to prove a theory or hypothesis) is better. Beweisen is often about logical or scientific proof. Nachweisen is more about presenting existing evidence.

It's like the difference between showing your homework (nachweisen) and solving a complex math problem (beweisen).

• Beweisen: To prove (often a theory, hypothesis, or guilt). More abstract or scientific.
• Belegen: To support with evidence, to document. Similar to nachweisen but can be less formal.
• Nachdruck verleihen: To lend weight to, to emphasize. Not direct proof, but strengthening a claim.
• Nachvollziehbar machen: To make understandable or traceable. Focuses on clarity, not just proof.
• Darlegen: To explain, to set forth. More about explaining how something works.

• jemandem etwas nachweisen: To prove something *to someone*. This is the most common structure. Example: Ich kann dir meine Unschuld nachweisen. (I can prove my innocence to you.)
• etwas nachweisen können: To be *able* to prove something. Example: Er kann seine Anwesenheit nicht nachweisen. (He cannot prove his presence.)
• der Nachweis: The noun form, meaning 'the proof' or 'the evidence'. Example: Der Nachweis ist erforderlich. (Proof is required.)

• What's the core idea? It’s about providing solid evidence for a claim or qualification. It’s more than just saying it; it’s showing it.
• Is it formal? Often, yes. It’s used in situations demanding verification, like official documents or professional settings.
• Can I use it casually? Sometimes, but usually with a touch of humor or irony. For everyday things, simpler words are better.
• What's the noun form? Der Nachweis means 'the proof' or 'the evidence'.
• What’s the difference from beweisen? Beweisen often proves a hypothesis or guilt, while nachweisen shows evidence you possess. It’s like showing your driver's license (nachweisen) vs. proving someone committed a crime (beweisen).