10 Common Grammar Mistakes AI Fixes in Seconds

From their/there to run-on sentences, here are the grammar mistakes that slip through on a phone — and how AI fixes each one in a tap.

Typing fast on a phone lets small grammar mistakes slip through — the kind autocorrect never catches because they involve the whole sentence, not one word. Here are ten of the most common, and how an AI keyboard fixes each in a tap.

The usual suspects

• ›Their / there / they’re — right spelling, wrong word.
• ›Your / you’re and its / it’s mix-ups.
• ›Subject–verb agreement ("the team are" vs "the team is").
• ›Verb tense drift within a sentence.
• ›Missing articles (a, an, the) — common for non-native writers.
• ›Run-on sentences with no punctuation.
• ›Comma splices joining two sentences with just a comma.
• ›Misplaced apostrophes in plurals and possessives.
• ›Capitalization after periods and for names.
• ›Awkward word order that changes the meaning.

Why autocorrect misses them

Autocorrect works one word at a time from a dictionary, so it cannot see that a correctly spelled word is the wrong one, or that a sentence has run on. Fixing these needs correction that reads the whole sentence — see our guide to fixing grammar while typing on Android.

How AI fixes them in seconds

An AI grammar keyboard reads the entire sentence and corrects spelling, grammar, and punctuation together, then replaces your text in place — so all ten of these are handled in one tap, in any app.

The bottom line: the mistakes that make writing look careless are exactly the ones sentence-level AI catches. If you write in a second language, it is even more useful — see the AI keyboard for non-native English speakers.