B2statement9 words6 rules

Opening sentence of Testzentrum in Sachsen-Anhalt: So können Drohnen im Katastrophenfall helfen, tagesschau.de, 18 August 2026. Quoted for study. The words are the publisher's; the analysis is ours.

Underline shows

Meaning

Today a new research centre for drone defence is being opened.

Word for word: Today is a new research-centre to-the drone-defence opened.

A formal announcement, e.g. in news or at an event: the opening of the centre takes place today; the doer of the action is not mentioned.

The sentence is in the present-tense passive (werden + past participle). 'Wird' occupies the second position as required by verb-second word order, and the participle 'eröffnet' stands at the end. The subject 'ein neues Forschungszentrum' is nominative; 'zur' contracts 'zu der', the dative after the purpose preposition 'zu'.

Rules at work(6)

Words(8)

heute
today

adverbA1temporal
werden
become, will (future auxiliary)

verbA2werden, wurde, ist gewordenmit habenirregular

Also the passive auxiliary; do not confuse with bekommen (= receive).
ein
a, an, one

determinerA1indefinite

The form einer here is dative feminine singular, not the pronoun meaning 'one'.
neu
new

adjectiveA1
das Forschungszentrum
research centre

nounB2pl. Forschungszentrengen. Forschungszentrumsstrong declension
zu
to, at, too

prepositionA1governs dative

With verbs of movement it takes dative even though motion is involved.
die Drohnenabwehr
drone defence, anti-drone defence

nounC1pl. Drohnenabwehrengen. Drohnenabwehrmixed declension
eröffnen
to open (officially), to inaugurate

verbB1eröffnen, eröffnete, hat eröffnetmit habenweak

My words

What you saved, and when each card comes back.

The lexicon

Every word this backend has met, commonest first. The count is what it has read, not an estimate.

Grammar rules

The sixty-nine rules the analysis chooses from, A1 to B2. Open one to read it with the sentences that use it. A rule the analysis wanted and could not find waits here as proposed until a person approves it.

How it works

Four steps, and the two places the sentences come from.

1
You paste a sentence

Anything up to 500 characters. Or pick one of today's news sentences instead.
2
A model reads it

It splits the sentence into words and records the dictionary form and endings of each one.
3
Rules get linked

It matches the sentence against the catalogue of sixty-nine rules and records the words that show each one.
4
It is stored for good

The next person to ask that sentence gets the stored answer, without going back to the model.

What you are looking at

Every word, and why it is that shape

Pick any word and its reading opens beside the sentence: the dictionary form it came from, its case, its person, and the job it does in the clause.

The underline colour repeats the word class, and the key under the sentence names every colour in words, so the colour is never the only thing carrying the meaning.

Then the rules that put it there

Under the words come the grammar rules the sentence uses. Each one names the words in this sentence that prove it, and says why it applies here rather than in general.

Open a rule to read it on its own page, with more sentences from the lexicon that use the same thing.

Questions

Where do the sentences come from

Two places. You type them, or the backend reads them. Every five minutes it fetches the German news from tagesschau.de, takes the first several sentences of each new article, and queues them. That is where most of the lexicon comes from: current German written for adults, rather than textbook sentences about a pencil on a table.

Every sentence taken from an article carries its headline, its publisher, a link back to the piece, and where in the piece it stood. Nothing here is presented as this site's own writing. If you publish German and would rather not be read this way, say so and you will be left out.

Can I trust what it says

Not blindly. A language model wrote every word of German in here. This one is better than expected: asked to conjugate helfen, it produced ihm wird geholfen for the passive, which is right precisely because helfen takes the dative and so has no personal passive.

It is also confidently wrong sometimes, and a learner is exactly the person who cannot tell. So every form, gender and plural carries two controls: right and wrong. Marking something wrong asks you for one sentence saying what is wrong with it, and that sentence is worth more than the count.

The counts show as two numbers rather than a score. One report against two approvals means something different from one report against two hundred, and a single number hides that.

What does it cost

Reading is free and needs no account. Analysing a sentence nobody has analysed spends money on a language model, so each account gets a daily allowance and can ask for more. Everything after that first analysis is free forever. The result is stored, and so is every word it taught the lexicon.

How does my list decide when to show a card again

You can save a whole word, a whole sentence, or a single form. A single form is usually the useful one: helfen, Präsens, er/sie/es is one thing to learn, and it can be solid while ihr helft is still shaky. Forms group under the word they belong to, so a verb with twenty forms is one entry rather than twenty.

You grade each card when you review it, and the grade sets the gap before you see it next. Forgot sends it back to the start. Hard stretches the gap a little. Good multiplies it. Easy multiplies it and then some. A card you keep forgetting keeps coming back sooner, for good, rather than being forgiven after one correct answer. Re-adding a set of forms never resets progress on cards you already have.

Who can read what

The lexicon is shared. Every sentence, word, form and rule is readable by anyone without an account, because a shared lexicon that everyone improves is the whole idea.

Your study list and review history are yours alone. Nobody else can read them, and the storage layer enforces that rather than the application remembering to check.

Why is the rule catalogue fixed

Sixty-nine rules, A1 to B2, written by hand. The analysis may only choose from them. That is what stops one rule appearing under four names and the links between sentences becoming meaningless.

Where a sentence uses something the catalogue lacks, the analysis may propose a rule. The proposal is stored and linked, so nothing is lost, but it stays marked as proposed until a person approves it. You can read the proposed ones under Rules.

Account

Signing in gives you a study list of your own. Reading the lexicon needs no account.

Signing in keeps a study list of your own. Reading the lexicon needs no account.

Admin

Everything here needs an API key, which is the backend itself rather than a person.

API key

Analysing a new sentence asks a language model, so it needs a key. Reading needs none. The key stays in this browser. It also opens these admin pages, so treat it as an administrator credential and do not hand it to a learner.

No key saved. Reading works without one.

The backend

Whether the thing is running. The queue is sentences waiting to be analysed; it should be draining, not growing.

Reported facts

What readers said is wrong. The note is the part worth reading; the counts only say how disputed something is.

People

Everyone who has analysed a sentence, and what they may spend a day. Requests for more are at the top.

Take a German sentence apart.

What comes back

Meaning

Rules at work(6)

Words(8)

Read today's news

My words

The lexicon

Grammar rules

How it works

You paste a sentence

A model reads it

Rules get linked

It is stored for good

What you are looking at

Every word, and why it is that shape

Then the rules that put it there

Questions

Account

Admin

API key

The backend

Reported facts

People

Take a German sentence apart.

What comes back

Heute wird ein neues Forschungszentrum zur Drohnenabwehr eröffnet.

Meaning

Rules at work(6)

Words(8)

Read today's news

My words

The lexicon

Grammar rules

How it works

You paste a sentence

A model reads it

Rules get linked

It is stored for good

What you are looking at

Every word, and why it is that shape

Then the rules that put it there

Questions

Account

Admin

API key

The backend

Reported facts

People