Grammar for IELTS Academic: Tense and Cohesion

In the IELTS Academic examination, writing and speaking tasks assess not only your knowledge of grammar but also how effectively you organise time and link ideas. Tense choices help you situate events and statements in time, while cohesion devices ensure that sentences and paragraphs flow logically without abrupt shifts. A deep understanding of both areas enables you to produce clear, credible, and well-structured responses that meet the criteria used by examiners in the British Council framework for IELTS Academic.

1. Understanding tense and cohesion in English

1.1 The core tenses and their aspectual nuances

English expresses time through a combination of tense and aspect. The simple tenses (present, past, future) indicate the core time frame, while the progressive (continuous) aspect marks ongoing actions. The perfect aspect connects the time frame to a previous point, often showing relevance to the present or to another time. When combined, these elements create eight common tense forms per time frame:

• Present: present simple (I walk), present continuous (I am walking), present perfect (I have walked), present perfect continuous (I have been walking).
• Past: past simple (I walked), past continuous (I was walking), past perfect (I had walked), past perfect continuous (I had been walking).
• Future: will/shall (I will walk), be going to (I am going to walk), future continuous (I will be walking), future perfect (I will have walked), future perfect continuous (I will have been walking).

In IELTS contexts, the present simple often conveys general truths, graphs or processes that are consistent over time. The present perfect links past events to the present relevance, a common pattern in data summaries and discussions of trends. The past simple narrates completed events or findings. The future forms are used for predictions, proposals, or planned developments. Distinctions between simple and perfect forms often reflect whether you consider time as an ongoing process or as a finished outcome.

1.2 Time references and signal words

Time cues steer readers toward the correct tense. Present references like “now,” “currently,” or “at present” favour present forms, while references to a prior period (e.g., “in 2010,” “last year,” “previously”) favour past forms. Signal words support coherence, guiding the reader through sequence and causality. Examples include:

• Time: now, currently, at the moment; in 2019, during the period, over the next decade.
• Sequence: firstly, subsequently, then, finally, afterward.
• Cause and effect: therefore, consequently, as a result, hence.

For academic writing, it is crucial to align your tense with the time frame of the data you describe and the argument you present. Inaccurate tense can confuse readers about when events occurred or whether a result remains valid.

1.3 Cohesion as a concept: linking time and ideas

Cohesion is the mechanism that binds sentences to each other and creates a coherent narrative. It rests on grammatical devices (references and substitutions) and lexical choices (repetition avoidance through synonyms and collocations). In IELTS, cohesion is a primary driver of band scores in the Writing and Speaking components because it demonstrates control over discourse structure and fluency of expression.

2. Tense usage in IELTS Academic Writing

2.1 Task 1: describing data and processes

Task 1 in IELTS Academic presents visual information such as graphs, charts, or processes. Your tense choices depend on what you describe:

• Present simple and present perfect are common in descriptions that reflect universal trends or results that are still valid.
• Past simple is used for data or events that occurred within the time period shown in the graph.
• Past perfect may appear when you reference an event that occurred before another event in the chart’s timeline.

Examples: “The graph shows that the number of participants increases gradually over the decade.”“The proportion of hours fell from 2010 to 2015, after which it rose again.”

2.2 Task 2: argument and discussion essays

Task 2 tasks require more fluid use of tenses to present arguments, discuss implications, and hypothesise about outcomes. Present simple is often used for general statements and opinions. Present perfect may connect past research to present implications. Past tenses frame historical context or case studies. For future-oriented conclusions or predictions, future forms (will, going to) or present continuous for planned actions can be appropriate.

Examples: “Globalisation has brought both opportunities and challenges.”“If governments invest in education, skills development will improve economic outcomes.”

3. Cohesion: connecting sentences and ideas

3.1 What cohesion is and how it matters in IELTS

Cohesion ensures that your ideas are connected logically. It prevents disjointed jumps from one sentence to the next and helps the examiner trace argument development. Cohesion operates on several levels: structural (paragraphing, topic sentences), referential (pronouns and demonstratives), lexical (repetition vs. paraphrase), and conjunctive (linking words and phrases).

3.2 Reference and substitution

Referential devices replace nouns or noun phrases to avoid repetition. Substitution uses an auxiliary or a pro-form to stand in for a whole phrase. For example:

• Referencing: The chart illustrates a rise in attendance. It then stabilises.
• Substitution: The results show a decline in revenue in Q1. The latter is significant.

Use sparingly to maintain clarity. Overuse can create ambiguity, especially if antecedents are distant or multiple potential referents exist.

3.3 Lexical cohesion and linking words

Lexical cohesion relies on semantic connections across sentences. This includes using synonyms, related terms, collocations, and consistent terminology. Linking words (conjunctive adverbs and transitions) guide readers through your reasoning. Grouped by function, common options include:

• Addition: furthermore, moreover, in addition, also.
• Contrast: however, nevertheless, on the other hand, although.
• Cause and effect: because, since, therefore, thus, consequently, as a result.
• Time and sequence: firstly, subsequently, then, finally, meanwhile, thereafter.

Exercising restraint is essential: choose a linking word that precisely reflects the intended relationship. Misplaced or overused connectors can create a mechanical feel and reduce clarity.

3.4 Paragraph structure and flow

A typical IELTS Academic paragraph presents a clear topic sentence, followed by supporting points, and a concluding or linking sentence. Within paragraphs, coherence can be improved by using one or two cohesive devices per sentence to maintain flow without overloading the reader with connectors. For Task 2 essays, ensure the progression of ideas is logical: claim → evidence → analysis → counterpoint or conclusion, with temporal or causal transitions as appropriate.

4. Common errors made by Spanish speakers

4.1 Tense selection and time reference confusion

Spanish speakers sometimes rely on a neurotic preference for present forms even when speaking about past data. For IELTS, this can obscure whether the information is historical or current. Remember to align verbs with explicit time markers such as “in 2010,” “over the period 2010–2020,” or “currently.”

4.2 Present perfect vs. simple past

The present perfect in English does not map directly to the Spanish pretérito indefinido (simple past). Instead, it marks relevance to the present. A common error is using the present perfect for finished actions when a simple past would be more accurate for the data timeline. Practice distinguishing when the action’s finish date matters to the present versus when it is simply a completed past event.

4.3 Sequence of tenses and reported statements

In analytical writing, reported statements may require a sequence of tenses that differs from Spanish usage. For example, a sentence like “The report states that the number has risen since 2015” uses the present perfect because the effect remains today. Misplacing tenses across reported statements can alter meaning and reduce precision.

4.4 Misuse of future forms

English future forms can be subtle. Native Spanish speakers sometimes rely on “will” for all future references, or confuse “going to” with simple plans. IELTS Academic tasks often require more nuance: use “will” for definite predictions, “going to” for planned intentions, and present continuous for arranged events or schedules.

5. Memorization tips and practice strategies

5.1 Build a tense-reference map

Create a concise matrix that links each tense and its typical function in academic contexts. Include example sentences relevant to IELTS topics such as technology, education, environment, and health. A visual map helps you recall correct forms under exam pressure.

5.2 Master the most useful cohesive devices

Focus on a core set of linking words and phrases that cover common relations. Avoid forcing rare connectors when a familiar option clearly communicates meaning. Practice using one or two devices per sentence to maintain natural rhythm.

5.3 Practice with authentic prompts

Engage with IELTS-style prompts that require data description and argumentative essays. After writing, perform a tense and cohesion audit: identify every tense used, verify time references, and check transitions between thoughts. This habit builds consistency and confidence.

6. Practical exercises

6.1 Exercise 1: Task 1 data description

Prompt: Describe a chart showing energy consumption by sector over a ten-year period. Use present simple and present perfect to reflect general trends and present relevance of results.

Sample answer excerpt: The chart shows that energy consumption remains highest in the industrial sector, while residential usage has decreased slightly since 2015. Over the decade, total energy consumption rose steadily before leveling off in 2019.

6.2 Exercise 2: Task 2 argument

Prompt: Some people believe that technology has made communication unnecessary. Discuss both sides and give your opinion.

Sample answer excerpt: > It is often argued that digital platforms have diminished the need for face-to-face meetings. However, while online communication offers convenience, it can reduce personal rapport. Therefore, a balanced approach that combines online and in-person interactions will strengthen collaboration.

6.3 Exercise 3: Cohesion revision

Prompt: Edit a short paragraph to improve tense accuracy and cohesion. Identify at least three cohesive devices and replace repetitive terms with appropriate synonyms.

Original: The study shows that there is a rise in students. The rise is followed by a decline in dropout rates. The data shows the trend continues. This shows the importance of early intervention.

Edited: The study shows a rise in students, and this rise is followed by a decline in dropout rates. The data also shows that the trend continues, which underscores the importance of early intervention.

7. Additional resources and next steps

For more tailored guidance, consider enrolling in the IELTS Academic course at UKLT. Our programmes focus on exam-ready grammar, including tense control and cohesive writing strategies. Reach out via the UKLT Contact Page for enrolment or queries, or contact us directly at info@uklanguageteaching.com or via WhatsApp at +44 20 8106 5581. You can also explore specific IELTS-related offerings here: IELTS Academic Course and Course Enrollment and Enquiries. If you are preparing for the Aptis exam, our Aptis resources are available through the Aptis Exam Registration page.