EmSAT Achieve is an English language proficiency exam administered in the United Arab Emirates. The exam assesses students' skills in various aspects of the English language, including grammar. While the exact topics covered may vary, there are certain grammar topics that are commonly included in the EmSAT Achieve exam.

1. Parts of Speech:
- Nouns: Identification of common, proper, singular, and plural nouns.
- Pronouns: Recognition of personal, possessive, and demonstrative pronouns.
- Verbs: Understanding of verb tenses, including present, past, and future, as well as identifying regular and irregular verbs.
- Adjectives: Knowledge of descriptive words and their usage in sentences.
- Adverbs: Understanding of words that modify verbs, adjectives, or other adverbs.
- Prepositions: Identification of words that show relationships between nouns, pronouns, and other words in a sentence.
- Conjunctions: Recognition of words that connect words, phrases, or clauses.
- Articles: Understanding of definite and indefinite articles (the, a, an).

2. Sentence Structure:
- Subject-Verb Agreement: Knowledge of matching subjects with appropriate verbs.
- Sentence Types: Differentiating between declarative, interrogative, imperative, and exclamatory sentences.
- Sentence Fragments: Identification and correction of incomplete sentences.
- Run-on Sentences: Recognition and correction of sentences that are too long or improperly joined.
- Sentence Combining: Ability to combine two or more sentences into a single, grammatically correct sentence.

3. Verb Forms and Tenses:
- Present Simple: Understanding of the basic present tense and its usage.
- Past Simple: Knowledge of the basic past tense and its application.
- Future Simple: Recognition of the basic future tense and its correct usage.
- Present Continuous: Understanding of actions happening at the present moment.
- Past Continuous: Knowledge of actions happening in the past over a specific duration.
- Present Perfect: Recognition of actions that started in the past but have relevance to the present.
- Past Perfect: Understanding of actions that occurred before another past event.
- Future Perfect: Knowledge of actions that will be completed before a specific future time.

4. Subject-Verb Agreement:
- Singular and Plural Subjects: Recognition of correct verb forms based on the number of the subject.
- Collective Nouns: Understanding of verb agreement with collective nouns.
- Indefinite Pronouns: Recognition of appropriate verb forms with indefinite pronouns.

5. Modifiers:
- Adjectives and Adverbs: Identification of correct placement and usage of descriptive words.
- Comparative and Superlative Forms: Understanding of the different degrees of comparison.

In conclusion, the EmSAT Achieve exam covers various grammar topics, including parts of speech, sentence structure, verb forms and tenses, subject-verb agreement, and modifiers. Students are expected to demonstrate their understanding of these topics through multiple-choice questions, sentence completion exercises, and other tasks.