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Phil Young’s English School

TOEFL Error Correction

Eleven sheets, one grammar family each, 330 exercises in all. Every sheet explains the patterns that cause the error, then drills them with thirty exercises — answerable on screen with instant feedback, or printable as a blank worksheet and a separate answer key.

How to use these. Each page opens with the patterns, written as wrong/right pairs. Work through those on the board, then set the exercises: Set A trains recognition, Set B uses the four-underlined-parts format from Structure & Written Expression, and Set C asks students to produce the correction themselves. Progress saves in the browser, so a student can stop and come back.
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Quiz builder

Draw a custom quiz from all 330 exercises — choose the families, the question types and the length, then answer on screen or print a worksheet and answer key.

 330 exercises
Advanced The eleven families All eleven ready
1

Subject–verb agreement

Intervening phrases, quantifiers, inversion, collective and irregular nouns, clause subjects.

 30 exercises 2

Verb tense and sequence

Perfect against simple past, past perfect for the earlier event, backshift in reported speech, conditionals, stative verbs.

 30 exercises 3

Pronoun reference and agreement

Ambiguous and vague reference, number agreement with antecedents, subject and object forms, who and whom, reflexives.

 30 exercises 4

Articles, determiners and countability

Countable and uncountable nouns, a against an, zero article for general statements, fewer and less, other and another.

 30 exercises 5

Prepositions and dependent prepositions

Verb, adjective and noun pairings, in/on/at for time and place, for and during, preposition + gerund, fixed phrases.

 30 exercises 6

Parallel structure

Series and correlative pairs, gerunds against infinitives, active and passive in one list, comparisons that compare like with like.

 30 exercises 7

Word form

Adjective against adverb, noun against verb, -ed and -ing adjectives, the suffix families, and confusable pairs like affect and effect.

 30 exercises 8

Modifiers and comparison

Dangling participles, misplaced only, clauses attached to the wrong noun, comparative against superlative, incomplete comparisons, adjective order.

 30 exercises 9

Sentence boundaries

Fragments, run-ons and comma splices, the four ways to repair a splice, linking adverbs that cannot join clauses, and doubled connectors.

 30 exercises 10

Word order, inversion and redundancy

Adverbial order, embedded questions, the five inversion structures, doubled subjects and negatives, and the wordy phrases a single word replaces.

 30 exercises 11

Verb forms and non-finite clauses

Modal plus base form, perfect and passive chains, do in questions and negatives, causatives, gerund against infinitive, and the participles left behind when a clause is reduced.

 30 exercises