Agreement errors include problems with subject-verb agreement, modals followed by a main verb and determiners. The subject and the verb in the same sentence should agree in person and number. Modals should be followed by a bare infinitive. In a noun


Wrong article / missing article / no article needed. The use of articles is determined by what we refer to in each context. The following table shows the possible choices of articles in different contexts: Indefinite article Definite article No article (ø)

Auxiliary Verb

See also Word Choice. The auxiliary form of the simple present tense is “do/does”. The auxiliary form of the passive voice (the present tense) is “is/are”. The auxiliary form of the present perfect tense is “have/has”. The auxiliary form of the past tense is


Modals should be followed by a bare infinitive. Wrong: *She can comes. Right: She can come. In example 1, the verb in the simple past form “found” cannot be used because bare infinitives (i.e. “find”) should be used after modal verbs (i.e.


Wrong preposition, missing preposition or no preposition needed. See also Word Choice. Wrong preposition In example 1, you hinder “development” “in” something, not “on” something.      WRONG RIGHT 1. This hinders children’s development on creativity. This hinders children’s development


Missing a pronoun or relative pronoun; unclear pronoun reference or wrong use of pronoun. Missing relative pronoun The relative pronouns (e.g. “who”, “which”, “that”, “whom”) cannot be omitted when they are the subject of the relative clause. It is okay


Choosing the right verb tense depends on the perspective the writer adopts in connection with time. Usually, current events are narrated in the present tense (e.g. “I am at the office right now.”). Past events are narrated in the past tense