Sentence Expander — Develop a Short Sentence Into Real Academic Reasoning

A sentence expander takes a statement that is correct but thin and shows you how it could carry more thinking. You paste one sentence of up to 300 characters, pick one expansion direction, and press Run. An AI model returns three options, each with a short title describing what it added.

• Depth — specifies what the claim actually covers: which group, which setting, which aspect.
• Cause — spells out the mechanism, the because or which leads to that the original sentence skipped.
• Nuance — adds scope, conditions and hedging, so the claim says no more than you can defend.

You get options, not an answer. Read all three, keep the parts that match what you actually mean, and rewrite the rest in your own words.

This is an illustrative example of the kind of output the tool returns, not a saved result.

Input: «Social media is bad for students.»

Vector: cause

• Attention mechanism — «Frequent social media use may harm students' academic performance because constant notifications fragment the attention needed for sustained reading [Insert citation].»
• Sleep displacement — «Late-night scrolling can reduce students' sleep, which in turn is likely to affect concentration in morning classes [Add your data].»
• Social comparison — «Exposure to curated peer content may lower some students' self-esteem, which could indirectly reduce motivation to study [Insert citation].»

Notice two things. Each version commits to one causal path instead of three at once, and each marks where evidence belongs with a placeholder rather than inventing a study. Choosing which mechanism your essay is really about is your job, and it is the decision that makes the sentence yours.

If you only need more words, this is the wrong tool, and phrases like «it is important to note that» will not fool a reader who grades for argument. The expander is built to add information a reader can use: a mechanism, a boundary, a qualification. It will not:

• invent statistics, studies, authors or quotations — where evidence is needed you get [Insert citation] or [Add your data];
• decide what your argument is — three different directions are offered precisely so you choose;
• check facts — a plausible cause is not a proven one until you find the source.

After expanding, run the result through the wordiness checker: if a new clause adds length without adding meaning, cut it.

Many academic traditions trust the reader to supply the link between a claim and its reason. English academic writing usually does not: examiners expect the logical connection to be on the page, and a bare assertion like «Social media is bad for students» reads as opinion rather than analysis. Writers who think in another language are often marked down for this even when their ideas are strong.

The nuance vector addresses a second convention: hedging. Words like may, tends to and in some contexts are not weakness in English — they show you know the limits of your evidence. For more on this, read our guide to hedging in academic writing. Seeing the same sentence expanded three ways is a quick way to learn which connectors and hedges fit which kind of claim.

• One sentence per run, up to 300 characters.
• One vector per run: depth, cause or nuance.
• 10 free runs per day per IP address, no account needed.

Your sentence is sent to our AI provider to produce the result and is not stored — no database, no logs, no training on your text.

A developed sentence can still be hard to follow if it stacks too many clauses. Paste the paragraph it lives in into the sentence structure checker to see whether your sentences vary in length and form. If you want to keep working on the whole draft, open the result in the Diglot editor.