TThe Complete Guide to the Present Simple: Structure, Usage and Mistakes to Avoid Many students learn the present simple formula in Grade 6 but still forget the "s/es" when they speak. The problem isn't the formula. It's how the tense is used, and the habits that carry over from Vietnamese. This article is for learners who want to use the tense correctly, not just memorise it. You'll learn its 5 most common uses, avoid the mistakes learners make most often and practise with a set of exercises that come with detailed answers. Let's start with what the present simple really means, the part few people explain properly. What Is the Present Simple and When Do We Use It? The present simple is the tense we use to talk about things that are stable: habits, facts, fixed schedules or states that don't change over time. This is the point many Vietnamese learners misunderstand most. Most assume "present" means "happening right now". It doesn't. If an action is happening in front of you, English speakers use the present continuous, not the present simple. The present simple describes things that are repeated or always true, even when you aren't doing them at the moment you speak. Three real examples from an international school setting I study at Westlink. A stable fact. You don't need to be sitting in class to say this. We have an assembly every Monday. A weekly routine, a fixed arrangement. My English teacher comes from Australia. A fact that doesn't change over time. None of these sentences is about "right now". They describe things that are always true or happen regularly. Once you remember this, the present simple becomes much easier to use, because you choose it based on meaning rather than signal words. Westlink students use academic English in an IB PYP class. Present Simple Structure The present simple has two patterns, depending on whether the main verb is to be or an ordinary verb. Many learners mix the two into one formula. This is where the mistake "She is study English", analysed later in this article, comes from. Structure with the verb to be The verb to be has three forms depending on the subject: am, is and are. Sentence type Structure Example Affirmative S + am/is/are + N/Adj I am a student. / She is friendly. Negative S + am/is/are + not + N/Adj We are not late. / He isn't tired. Question Am/Is/Are + S + N/Adj? Are you ready? / Is Mr John your teacher? Subject agreement: I → am; He/She/It/singular nouns → is; You/We/They/plural nouns → are. Structure with ordinary verbs Unlike to be, ordinary verbs need the auxiliary do/does in negatives and questions. Sentence type Structure Example Affirmative S + V(s/es) + O They play football every weekend. Negative S + do/does + not + V (base form) + O She doesn't drink coffee. Question Do/Does + S + V (base form) + O? Do you live in Hanoi? Subject agreement rules to remember: I / You / We / They / plural nouns → base form of the verb, with the auxiliary do. He / She / It / singular nouns → verb + s/es, with the auxiliary does. The most common mistake in negatives is writing "She doesn't drinks coffee." This is wrong because does already carries the subject agreement, so the main verb must go back to its base form. Wh- questions in the present simple Wh- questions add a question word (What, Where, When, Why, Who, How) in front of the normal question structure. Verb type Structure Example To be Wh- + am/is/are + S + …? Where is your school? Ordinary verbs Wh- + do/does + S + V (base form) + …? What time do you start class? Four real-life examples: Where do you live? Asking where someone lives. What does your father do? Asking about someone's job. Who is your homeroom teacher? Asking who someone is. How often do you read English books? Asking about frequency. Master these three tables and you have all the present simple you need for everyday use. The present simple has two main patterns: with the verb to be and with ordinary verbs. The 5 Most Common Uses of the Present Simple Habits and repeated actions: for things that happen often or regularly.Example: I go to school by bus every day. General truths and facts: for things that are always true or follow a rule.Example: Water boils at 100°C. Fixed schedules and timetables: for class timetables, train and bus times, itineraries or arranged events.Example: The class starts at 8 a.m. Feelings, thoughts and states: usually with verbs such as like, love, want, need, know, believe and understand.Example: She likes learning English. In the if clause of first conditional sentences: the if clause uses the present simple even though the condition refers to the future.Example: If you study hard, you will pass the exam. Students apply the present simple in real contexts during a science lesson. Signal Words for the Present Simple Adverbs of frequency Words such as always, usually, often, sometimes, rarely, seldom and never are often used to describe how frequently an action happens. Example: She always arrives on time. Time expressions for repeated actions Phrases such as every day, every week, twice a month, on Mondays, daily, weekly and monthly often show that an action is a habit or happens in a regular cycle. Example: We have PE on Mondays. Adverbs and time expressions help identify repeated actions in the present simple. Rules for Adding s/es and How to Pronounce It Forgetting the "s/es" with third-person singular subjects tops the list of grammar mistakes Vietnamese learners make with the present simple. Even when they remember to add it, many learners still add it incorrectly or mispronounce it. 5 rules for adding s/es Case Rule Example Most verbs Add -s play → plays, read → reads Ending in -s, -ss, -sh, -ch, -x, -z, -o Add -es watch → watches, go → goes, fix → fixes Consonant + y Change y → ies study → studies, fly → flies Vowel + y Keep the y, add -s play → plays, enjoy → enjoys Special case have → has She has two sisters. 6 Common Mistakes Vietnamese Learners Make with the Present Simple When applying the present simple in writing and speaking, Vietnamese students often make certain mistakes because of differences between Vietnamese and English structure. Summary of 6 common mistakes No. Mistake Correct sentence Why it's wrong 1 She go to school every day. She goes to school every day. Missing s/es with a third-person singular subject, because Vietnamese verbs don't change with the subject 2 She is study English. She studies English. Using to be + base verb, confusing the structure with the present continuous 3 She beautiful. / He tall. She is beautiful. / He is tall. Missing to be before an adjective, carried over from Vietnamese "cô ấy đẹp" (literally "she beautiful") 4 She always is at home. She is always at home. Adverb of frequency in the wrong position with to be 5 I do my homework now. (while writing it) I am doing my homework now. Using the present simple for something happening right now, a misunderstanding of its basic use 6 She studys English. She studies English. Not changing y to ies when the verb ends in a consonant + y A closer look at the 3 most serious mistakes Mistake 1: Forgetting s/es. This mistake comes from language transfer. Vietnamese verbs don't change according to the subject, so learners don't have the reflex to check subject agreement. The fix: whenever you see he/she/it or a singular noun, pause for a beat and check the verb. Mistake 2: "She is study English". This mistake appears when students learn the present continuous and then forget that the two tenses have completely different structures. The present simple with an ordinary verb has no to be: is/am/are → must be followed by V-ing. A base verb with subject agreement → no to be. The two structures exclude each other. Mistake 3: Missing to be before an adjective. In Vietnamese, "cô ấy đẹp" (literally "she beautiful") doesn't need a word for "is". In English, an adjective always needs a linking verb, usually to be. This mistake appears early and sticks stubbornly if it isn't corrected from the start. The other three mistakes (adverb position, using the wrong tense and forgetting to change y → ies) are technical errors. They can be fixed quickly with enough practice. A quick self-check before handing in your work Before handing in a piece of writing or an answer, run through 3 questions: Is the subject third-person singular? If so, have you added s/es to the verb? Does the sentence contain to be? If so, is it followed by V-ing, or by an adjective or noun? Is the adverb of frequency in the right position relative to the main verb? These three questions help you catch most basic present simple mistakes before your teacher marks your work. Present Simple vs Present Continuous These two tenses cause the most confusion for Vietnamese students, as seen in Mistakes 2 and 5 above. The quickest way to tell them apart is to look at the meaning, not the signal words. Criterion Present simple Present continuous Meaning Habits, facts, fixed schedules An action happening at the moment of speaking Time frame Repeated regularly or always true Only at this moment or for a short period Structure S + V(s/es) S + am/is/are + V-ing Signal words every day, often, usually, always now, at the moment Example I read books every night. I am reading a book now. 3 pairs of sentences compared directly Pair 1: Different kinds of action She works at a bank. → It's her job, a stable situation. She is working at a bank this month. → She's only working there temporarily this month. Pair 2: Different timing We have an English class on Mondays. → A fixed weekly timetable. We are having an English class right now. → The class is taking place at the moment of speaking. Pair 3: Feelings and states I love this song. → A stable feeling, correct with a stative verb. I am loving this song. → Incorrect in standard written English. Stative verbs aren't used in the -ing form. A 5-second memory trick Ask yourself one question: "Is this action happening right now, as I'm speaking?" Yes → present continuous. No, but it's repeated or always true → present simple. This trick works better than memorising signal words, because signal words have "traps", as shown earlier. The Present Simple in International Academic English In academic settings, the present simple is used often to present information and describe facts, habits or general statements. Students will meet this tense in many learning activities and English exams, especially in the following contexts: Science project presentations: to present the method, results or conclusions of an investigation.Example: This experiment shows that plants grow faster under blue light. IELTS Speaking Part 1: to introduce yourself, your interests, your studies and your daily activities.Example: I live in Hanoi, and I study at a bilingual school. IELTS Writing Task 1: to introduce and describe the information and data shown in a chart.Example: The chart shows electricity consumption in five countries. Research summaries and abstracts: to present the main findings or conclusions of a study objectively.Example: The study finds a strong link between sleep and academic performance. How do students in an IB setting use this tense? In an IB setting, students don't just learn English as a subject. They also use the language to explore knowledge, ask questions, research and present ideas. At Westlink, the IB Primary Years Programme (PYP) encourages students to explore real-world questions through areas such as languages, science and maths. Reading, writing, listening and speaking skills are also developed in meaningful learning contexts. Along the way, the present simple appears naturally when students describe facts, present what they have observed or express general statements. For example, during a science inquiry, students might use sentences such as "Plants need sunlight to grow" or "The experiment shows that…". Instead of memorising formulas in isolation, students get to apply grammar structures to express what they are learning. Explore the academic English environment at Westlink Hanoi. At higher year levels, using English continues to be tied to specific learning tasks. In the Bilingual Middle Years Programme at Westlink, students learn in both English and Vietnamese. They are also encouraged to connect knowledge across subjects, develop critical thinking and explore independently. An inquiry-based, interdisciplinary teaching approach creates more opportunities for students to use English in research, discussion, problem-solving and presenting ideas. So the present simple doesn't only appear in verb-conjugation exercises. Students may meet and use it when reading texts, describing processes, presenting results, writing comments or explaining a concept. This is also the difference between learning English and using English as a tool for learning: grammar is placed in a real context, helping students understand when and why a structure is used. Tips for Remembering the Present Simple for the Long Term Understanding the theory and getting exercises right is one thing. Remembering it and responding correctly when you speak is another. The four methods below help you turn the present simple from "knowledge on paper" into a natural reflex. Active recall with your own daily routine sentences Every morning, say 5 sentences out loud in English describing your routine, without looking at a book: "I wake up at 6. I drink water first. I check my schedule…" This method works because you are actively producing sentences, not just recognising ready-made ones. Learners usually remember better when they create sentences themselves than when they only recognise answers given to them. Write a 5-line journal every day Write 5 lines; they don't need to be long. The only rule: use the present simple. "I have an English class today. My homework feels hard. My friend helps me with it…" After 30 days, you'll notice you forget the "s/es" less often, because you have written it hundreds of times. Ask "Why is this tense used?" When you come across a present simple sentence in a book or online, don't just skim it. Ask yourself: why does this sentence use the present simple and not another tense? This is the method teachers at Westlink use to help students understand how grammar works through real context, rather than memorising formulas mechanically. Spaced repetition with flashcards Make two-sided flashcards: one side shows a situation ("Describe your weekly timetable"), and the other shows a model sentence ("We have Maths on Mondays."). Review them after 1 day, 3 days, 7 days and 21 days. Reviewing at spaced intervals helps knowledge move into long-term memory more easily. Spaced review helps reinforce structures and reduces forgetting. Present Simple Exercises with Detailed Answers That's enough theory. Time to practise. The exercises below are designed across 3 levels, from basic verb forms to writing complete sentences. Every answer comes with a short explanation, so you understand why, not just what the right answer is. Exercise 1 (Basic): Put the verbs in brackets into the correct form My sister (study) ___ at a bilingual school in Hanoi. We (not have) ___ class on Saturday. ___ your father (work) ___ at a hospital? The library (close) ___ at 5 p.m. every weekday. Tom and his brother (play) ___ football after school. She (watch) ___ English films to improve her listening. Water (boil) ___ at 100 degrees Celsius. I (not understand) ___ this question, Mr Hoang. Exercise 2 (Intermediate): Find and correct the mistakes She don't like Maths. My mother work at a bank. Do your brother plays the guitar? He is study English every evening. They always are late for class. Anna studys Vietnamese on Tuesdays. Exercise 3 (Advanced): Complete the paragraph Fill in the correct form of the verbs in brackets: My name is Linh. I (1. live) ___ in Hanoi with my family. Every morning, I (2. take) ___ the school bus at 6:45. Our first class (3. start) ___ at 7:30. My English teacher (4. come) ___ from Australia. She (5. not give) ___ us too much homework, but she (6. ask) ___ us many questions in class. I (7. like) ___ her teaching style. ___ (8. you / want) ___ to know more about my school? Answers and explanations Exercise 1: studies: third-person singular + a verb ending in consonant + y → change y to ies. don't have: the subject is "we" → auxiliary "do" + not. Does … work: the subject "your father" is third-person singular → use "does", and the verb returns to its base form. closes: a fact about a fixed schedule. play: the subject "Tom and his brother" is plural. watches: third person + a verb ending in "ch" → add "es". boils: a scientific fact. don't understand: the subject is "I". Exercise 2: She doesn't like Maths. She → does, not do. My mother works at a bank. Missing s/es with a third-person singular subject. Does your brother play the guitar? After "does", the verb must be in its base form. He studies English every evening. Incorrect to be + verb structure. They are always late for class. The adverb of frequency goes after to be. Anna studies Vietnamese on Tuesdays. Consonant + y → ies, not "studys". Exercise 3: (1) live, (2) take, (3) starts, (4) comes, (5) doesn't give, (6) asks, (7) like, (8) Do you want When English becomes a language for learning, students don't just memorise grammar formulas or study the present simple on paper. They use English to discuss, present, write reflections and share ideas in class. At Westlink, the Bilingual Programme helps students engage with English through academic contexts and everyday school life. Parents can book a tour of Westlink to see the real learning environment for themselves.
