iCALL Suite

Ten interactive tools to help you understand and practise key patterns of English grammar.

About This Course

The iCALL Suite (Intelligent Computer-Assisted Language Learning) is a collection of ten grammar tools for non-native speakers of English. Each unit combines a short lesson with a hands-on tool that analyses or transforms your own sentences, so you can see grammar rules working on real examples you provide.

The tools use compromise NLP to parse and manipulate English text directly in your browser — no data is sent to any server.

Quick facts

  • 10 units, each with one embedded tool
  • Suitable for B1–C1 level learners
  • No login or registration required
  • Works entirely in your browser
  • Best used as a self-study supplement

Units & Tools

Unit 01

Adjective Order

Discover the fixed order English uses when multiple adjectives modify a noun.

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Unit 02

Modal Verbs

Explore how modal verbs change meaning — from possibility to obligation.

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Unit 03

Participle Clauses

See how participle clauses compress two ideas into one elegant structure.

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Unit 04

Formal Language

Convert informal or colloquial English into more formal, academic style.

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Unit 05

Polite Requests

Transform direct requests into polite, indirect forms.

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Unit 06

So & Neither

Practise agreeing with positive and negative statements using so and neither.

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Unit 07

Short Answers

Generate correct short answers to yes/no questions automatically.

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Unit 08

Tense Parser

Identify and label the tenses used in any sentence you enter.

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Unit 09

Articles

Check whether a or an is correct before any word using phonetic rules.

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Unit 10

Reported Speech

Transform direct speech into reported speech with automatic backshift.

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