Language Structure and Vocabulary: Accuracy with Range
This domain tests control of grammar and precise word choice at B2: forms you can produce automatically and vocabulary you can distinguish by nuance. Study by function, not by isolated lists.
Grammar concepts to command: verb patterns and aspect (الماضي، المضارع، الأمر; use of قد، كان + verb, and the distinction between habitual and progressive meaning); negation (لم + jussive, لن + subjunctive, ما، ليس); conditionals (إذا، لو، إن with their verb forms); relative clauses (الذي/التي agreeing in gender and number); passive (المبني للمجهول) and its vowel changes; case endings in context (nominative subject, accusative object) where they affect meaning; dual and sound/broken plurals; and agreement of adjectives with nouns in definiteness, gender, and number.
Vocabulary concepts: collocations (اتخذ قرارًا، لعب دورًا، أبدى ملاحظة), false friends and near-synonyms (رأى/شاهد/لاحظ differ in focus), prepositions governed by verbs (اعتمد على، اهتم بـ، ساهم في), and register (formal written vs. conversational).
Traps: an option that is grammatically possible but semantically wrong; a near-synonym that ignores collocation; preposition mismatches; and agreement errors hidden in long sentences.
Rule of thumb: for gap-fill, test the whole phrase aloud - if the collocation or governed preposition sounds wrong, the option is wrong even when the meaning seems close.
Worked example: «ساهم الفريق ___ إنجاز المشروع.» Options: في / على / بـ. The verb ساهم governs في, so «ساهم في إنجاز المشروع» is correct; على and بـ fit other verbs but not this collocation.