Vietnamese and English share the same Subject-Verb-Object word order, which gives Vietnamese speakers a head start. But tense, articles, pronouns, and prepositions work very differently in Vietnamese — and these differences produce a consistent set of errors.
Learning to spot your own patterns is one of the fastest ways to improve.
1. Tense: Vietnamese Uses Time Words, Not Verb Changes
This is the most fundamental difference. In Vietnamese, verbs never change form. Tense is shown through time words like đã (past), đang (present continuous), and sẽ (future). In English, you need both — the verb must change and you can still use time words.
Common error: “Yesterday I go to work and finish my report.” Correct: “Yesterday I went to work and finished my report.”
Common error: “She already eat.” Correct: “She has already eaten.” / “She already ate.”
Why it happens: In Vietnamese, Hôm qua tôi đi làm is complete and correct — đi (go) doesn’t change. The time word hôm qua (yesterday) does all the work. In English, the verb must also change.
How to fix it: Train yourself to change the verb every time you use a past time expression. Yesterday, last week, in 2022 → past tense verb. Since, for (duration), already with present relevance → present perfect.
2. Missing Articles: “a,” “an,” and “the”
Vietnamese has no articles. There is no equivalent of “a” or “the” — nouns stand alone, and context makes their meaning clear.
Common error: “I need to find room to rent.” Correct: “I need to find a room to rent.”
Common error: “Can you turn off light?” Correct: “Can you turn off the light?”
Why it happens: In Vietnamese, phòng means both “a room” and “the room.” The distinction simply doesn’t exist in the language.
How to fix it: Use “a/an” when you mention something for the first time or refer to any one of many: “I saw a car.” Switch to “the” when you and your listener both know which one you mean: “The car was red.” For general plurals and uncountable nouns, use no article: “I like rice,” “Dogs are friendly.”
3. Plural Markers
Vietnamese nouns don’t change for plural. Quantity is expressed through numbers or words like nhiều (many) and các/những (a group of). As a result, Vietnamese speakers often forget the plural -s in English.
Common error: “I have two brother.” Correct: “I have two brothers.”
Common error: “There are many student here.” Correct: “There are many students here.”
How to fix it: Whenever a number or quantity word comes before a countable noun, add -s. Treat the plural marker as a required attachment to the noun, not an optional extra. “Three books, several questions, many options.”
4. Pronouns: The Vietnamese Social System Doesn’t Translate
This is a uniquely Vietnamese challenge. Vietnamese doesn’t use neutral personal pronouns the way English does. Instead, it uses kinship-based pronouns based on the relationship between speaker and listener: anh (older male), chị (older female), em (younger person), bạn (friend), tôi / mình (I), and so on.
In English, you say “I” regardless of your age relative to the listener. You say “you” to anyone. This simple system takes adjustment.
Common error: Using “she” or “he” when referring to someone present in the conversation (because in Vietnamese you might use their relational term rather than a distant pronoun).
Common error: Overusing “I” in formal Vietnamese contexts carries a sense of rudeness, so some Vietnamese speakers avoid “I” and omit the subject instead.
Example: “Am happy to help.” Correct: “I’m happy to help.”
How to fix it: In English, always use I, you, he, she, it, we, they — even when context seems obvious. Subject pronouns are not optional, and using “I” is not rude — it’s grammatically required.
5. Prepositions: Overlap and Omission
Vietnamese uses prepositions (ở, tại, vào, trên, dưới), but they don’t map directly to English prepositions. This creates confusion with common combinations.
| Common error | Correct English |
|---|---|
| ”I am at university since 2023." | "I have been at university since 2023." |
| "I arrived to Australia." | "I arrived in Australia.” (or “arrived at the airport”) |
| “She is good in English." | "She is good at English." |
| "I am interested about this topic." | "I am interested in this topic." |
| "Depend of the situation…" | "Depending on the situation…" |
| "I will go there in Monday." | "I will go there on Monday.” |
Why it happens: Vietnamese prepositions cover different ranges of meaning than English ones, and the matches are rarely one-to-one.
How to fix it: Learn prepositions as fixed phrases, not by translation. At university, good at, interested in, arrive in (a country), arrive at (a building), on Monday, in the morning. When you learn a new adjective or verb, note the preposition that goes with it.
6. Classifiers vs Countable Nouns
Vietnamese uses classifiers — words placed before a noun to indicate its type or category. For example: con (for animals), cái (for objects), quyển/cuốn (for books). English doesn’t have classifiers, but it does have a count/uncount distinction that confuses Vietnamese speakers.
Common error: “I have many homeworks to do.” Correct: “I have a lot of homework to do.” (homework is uncountable)
Common error: “Can I have an information?” Correct: “Can I have some information?” / “Can you give me some information?”
Common uncountable nouns that Vietnamese speakers often treat as countable: homework, advice, information, news, research, furniture, equipment, luggage, knowledge, progress
Why it happens: In Vietnamese, these concepts can often be counted using classifiers (một tin = one piece of news). The uncountable category in English is a separate rule system.
How to fix it: Memorise the most common uncountable nouns as a list. For each one, learn how to express quantity: a piece of advice, some information, a lot of homework, a piece of furniture.
7. Question Formation
In Vietnamese, questions are often formed by adding question words or particles to the end of a statement, or by using a question word like có…không (literally: “has…no?”) around the verb. English requires auxiliary verbs and inversion.
Common error: “You understand?” (rising intonation in speech) More natural: “Do you understand?”
Common error: “She go where?” Correct: “Where is she going?” / “Where did she go?”
Common error: “Why she is late?” Correct: “Why is she late?”
How to fix it: For yes/no questions, put the auxiliary (do/does/did/can/will/have) before the subject. “Do you have time?” / “Can she help?” For wh-questions, the structure is: question word + auxiliary + subject + main verb. “What did you say?” / “Where are you going?”
The Bottom Line
Vietnamese speakers often make fast progress in English vocabulary and reading because Vietnamese already uses the Roman alphabet and SVO word order. The sticking points are usually tense (the verb must change, not just the time word), articles, and uncountable nouns.
Start with tense — it affects every sentence you produce. Once verb changes become automatic, articles and plural markers are the next most impactful habits to build. With these three in place, your English will read and sound significantly more natural.