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AI English tutor: what it does that an AI chat doesn't

An AI chat explains any rule, but won't notice your third "suggested me to" or bring the word back next week. See how LetsWords runs a lesson like a tutor.

A good tutor doesn’t wait for your questions. They decide what you’ll work on today, notice that you’ve written suggested me to for the third time, and bring that word back a week later until the mistake is gone. In an ordinary AI chat, you pick the material, set the rules for checking and organise your own review. In LetsWords, the session is already prepared for your goal and level, and the service guides you like a tutor for vocabulary and writing, including IELTS Writing: it asks you to use a word in a sentence, explains your mistake in your native language, notices which mistakes keep coming back and works your weak spots back into practice. Below is one such session, built around a single word.

Example session: the word suggest

When you sign up, you answer a few questions about your goal and level and take a vocabulary test, and LetsWords picks the right practice for you. A session starts with the word in context: a card with a definition and examples of it in use. You can switch the definitions to English and reveal the translation only when you need it.

The word from your set is suggest: “to put forward an idea or an option”. Next, you write a sentence with it. Not sure what to write about? The generator suggests an idea in your native language at the right difficulty, and you express it in English. Say you write about how you learn English:

My teacher suggested me to read more English books.

Feedback: the mistake, the correction and an explanation in your native language

The word choice is right: your teacher put forward an idea. The mistake is in the structure. It’s one of the most common learner errors: by analogy with advise me to or ask me to, learners put a person and to + verb after suggest. But suggest doesn’t work that way. There are two correct patterns: suggest + a verb with -ing, or suggest that + a person + the base form of the verb.

My teacher suggested reading more English books. My teacher suggested that I read more English books.

In the second version, read is in the base form, and it stays that way even with he: suggested that he read. A stronger version adds detail:

My teacher suggested that I read English books for twenty minutes a day to expand my vocabulary.

Every piece of feedback works like this: LetsWords points out usage and grammar mistakes, corrects them, suggests a better way to phrase it and explains everything in your native language: Russian, Korean or Vietnamese. Choose brief or detailed feedback. It takes your goal into account: an exam or general English. You always do the writing; the feedback never swaps your sentence for a ready-made text. You can work out how suggest differs from offer in the free suggest vs offer exercise. More feedback examples are collected in How LetsWords checks your sentences.

Review: the word keeps coming back until the mistake is gone

A few days later. In review, you see “to put forward an idea or an option”, recall suggest yourself and write a new sentence, for example for an IELTS essay:

Some experts suggest that cities should charge drivers for entering the centre.

The word comes back in later sessions, and LetsWords keeps track of where you go wrong: it notices mistakes you repeat and brings your weak spots back into practice. You don’t need to keep a word list, remind yourself to review or remember what you’ve mixed up before: the plan, the feedback and the review are all in one place.

Why does this cycle matter? A word you’ve used in your own writing sticks better than a word you’ve only come across while reading (Hulstijn & Laufer, 2001). And retrieving what you’ve learned again and again helps you keep it for the long term (Karpicke & Roediger, 2008). How to turn words you recognise into words you use is covered in detail in our guide to passive and active vocabulary.

You can take words from ready-made sets (by level, exam and academic vocabulary, collocations, phrasal verbs) or add your own: from work, TV shows or your coursebook.

Try a LetsWords session with feedback

When you sign up, you choose your goal and level, write a sentence and get feedback in your native language before you pay.

IELTS Writing in the same service

For IELTS Writing, an AI tutor has to know the exam: the task formats, the four criteria and how to work on one weak spot without rewriting the whole essay every time. In LetsWords, it’s all part of the same service:

  • hundreds of Academic and General Training prompts for Task 1 and Task 2: graphs, tables, maps, processes, letters and the main essay types;
  • a guide to the format and a checklist before you answer, so you understand the task before you start writing;
  • full answers with feedback on all four criteria: problem spots are marked right in the text, with explanations in your native language;
  • practice on individual criteria: you can write a short passage and work on, say, Task Response alone instead of a whole 250-word essay.

Words you were missing in an essay go into your vocabulary practice, where you learn to use them. Find out more on the IELTS Writing checker in LetsWords page. To plan your preparation for every part of the exam, read How to prepare for IELTS at home.

Why an AI chat or a voice app won’t run a session like this

An ordinary AI chat answers questions, but it only becomes a tutor when you tell it to. Here’s a typical prompt:

You’re my English tutor. I’m B1 and preparing for IELTS. Give me one word at a time on the topic of work. I’ll write a sentence with it, and you explain my mistakes in my native language, but don’t rewrite everything for me. In three days, check whether I remember these words.

Here’s what’s still left to you:

  • Choosing the words. The chat doesn’t know which words you already know, so it gives you whatever comes first. Whether they fit your goal and level is up to you.
  • Keeping the checking on track. A few messages in, the chat may start handing you a polished version of your sentence instead of feedback. You’ll have to keep reminding it not to rewrite for you.
  • Tracking your mistakes. What you mix up all the time and what was a one-off, you keep in your head or in your notes.
  • Review. A chat doesn’t start itself. Nobody reminds you in three days: going back, pasting in the word list and asking for a check is up to you.

In other words, you’re still the one planning the course. We break this down for IELTS Writing in ChatGPT for IELTS Writing or LetsWords.

A voice AI conversation partner will correct a phrase on the fly, and the conversation moves on. It won’t bring you back to the word you got wrong, and you’re left with no written feedback and no explanation. To stop saying suggested me to, you need to see the structure, fix it and use it again a few days later without a prompt. That’s exactly how a LetsWords session works. And a word you’ve learned to use in writing is easier to recall in conversation.

Free AI English tutor: what you can do without paying

You can try how LetsWords reviews your English for free:

  • Open LetsWords exercises: more than 1,500 expressions, linking words, phrasal verbs and confusing pairs, with no sign-up needed. Each page has the meaning, a common mistake and an exercise, and you can write a sentence with the expression and get it checked.
  • A trial feedback session when you sign up for LetsWords. Before you pay, you try a writing exercise and get an explanation of your mistakes. If you’re preparing for IELTS, you can choose a Writing criterion exercise or feedback on an answer.

Regular vocabulary and IELTS Writing practice is by subscription; the plan and terms are shown before payment.

The difference between free answers and a tutor is the system: something that remembers your mistakes, decides what comes next and brings back your weak spots. If you build that system yourself on top of a free chat, you pay with your time: every session starts with planning, not with English.

AI instead of a human tutor, or alongside one

If you work with a teacher, an AI tutor takes on what’s a waste of lesson time: daily practice and checking between sessions. You then come to your lesson with sentences already written, mistakes already worked through and specific questions. If you don’t have a tutor, LetsWords covers the part of the job without which words never make it into your speech: choosing the material, checking how you use it and bringing back your weak spots. If you’re comparing LetsWords with flashcards and vocabulary apps, take a look at our roundup of apps for learning English words.

Want new words to show up in your writing and speech, not just look familiar on the page? Start practising with feedback in LetsWords. When you sign up, answer a few questions about your goal and level. Then, before you pay, try using a word you’re learning: LetsWords checks what you wrote, explains the correction in your native language and brings the word back for review.

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Practise English at your level and for your goal. Get corrections and clear explanations of your mistakes.