Interactive Study Tool
HSK 4 Confusable Words / 易混词辨析
Clear up common confusions between similar HSK 4 words. Each pair has explanations, examples, and a mini quiz.
Prepositions / 介词
VS
关于 vs 对于
about / regarding — when to use which
▶
| 关于 guānyú | 对于 duìyú | |
|---|---|---|
| Meaning | about, concerning | regarding, as for |
| Focus | Introduces a topic of discussion | Introduces an object of attitude/opinion |
| As attributive | Can modify a noun: 关于HSK的书 | Cannot modify a noun directly |
| As title | Can be used in titles: 关于学习方法 | Rarely used in titles |
关于这本书，你知道多少？
About this book, how much do you know? (topic introduction)
对于这个问题，我有不同的看法。
Regarding this issue, I have a different opinion. (attitude toward something)
Quick rule: If you can replace it with "about" and the sentence talks about a topic → use 关于. If the sentence expresses an opinion, attitude, or feeling toward something → use 对于. When unsure, they are often interchangeable.
Quick Quiz (3 questions)
中国文化，他非常感兴趣。
Expressing interest (感兴趣) is an attitude → use 对于.
我想买一本HSK考试的书。
Modifying a noun (关于HSK的书) → only 关于 works as an attributive.
这件事，大家的意见不一样。
Expressing opinions (意见) about something → 对于 is more precise. (关于 is also acceptable here.)
VS
由于 vs 因为
due to vs because — formal vs everyday
▶
| 由于 yóuyú | 因为 yīnwèi | |
|---|---|---|
| Register | Formal / written | Neutral / spoken |
| Position | Usually at the beginning of a sentence | Can appear anywhere |
| Pair with | 由于…因此 | 因为…所以 |
| Scope | Emphasizes objective cause | Can be objective or subjective |
由于天气原因，航班取消了。
Due to weather conditions, the flight was cancelled. (formal, objective)
因为我不喜欢，所以没买。
Because I didn't like it, I didn't buy it. (personal, subjective)
Quick rule: 由于 sounds like "due to" — formal, objective, usually first in sentence. 因为 sounds like "because" — everyday, flexible. You can't say 由于我不喜欢 (subjective reason).
Quick Quiz (3 questions)
交通堵塞，会议推迟了。
Formal context + objective cause → 由于 is best. (因为 is also grammatically correct but less natural in formal writing.)
我太累了，就没去。
Personal/subjective reason (我太累了) → use 因为. 由于 wouldn't be natural here.
经济形势变化，公司调整了计划。
Formal written context + objective economic reason → 由于 is most appropriate.
Adverbs / 副词
VS
忽然 vs 突然
suddenly — subtle but important difference
▶
| 忽然 hūrán | 突然 tūrán | |
|---|---|---|
| Part of speech | Adverb only | Adverb and adjective |
| As modifier | Cannot modify a noun | Can modify a noun: 突然的变化 |
| As predicate | Cannot be predicate | Can be: 这件事很突然 |
| As adverb | Same usage as 突然 | Same usage as 忽然 |
天忽然下起雨来了。
It suddenly started raining. (adverb — both words work here)
这个消息很突然。
This news is very sudden. (adjective — only 突然 works)
突然的变化让大家很吃惊。
The sudden change surprised everyone. (attributive — only 突然 works)
Quick rule: When used as an adverb before a verb, they're interchangeable. But only 突然 can be used as an adjective (很突然) or to modify a noun (突然的变化). When in doubt, 突然 is the safer choice.
Quick Quiz (3 questions)
他的离开非常。
Used as predicate adjective (非常___) → only 突然 works. 忽然 is adverb only.
Which sentence is INCORRECT?
很忽然 is wrong — 忽然 is an adverb and cannot be modified by 很. Correct: 这件事很突然。
她想起了一件事。
As an adverb before a verb, both 忽然 and 突然 are correct and interchangeable.
VS
到底 vs 究竟
after all / on earth — emphatic question words
▶
| 到底 dàodǐ | 究竟 jiūjìng | |
|---|---|---|
| Register | Spoken / neutral | Slightly more formal |
| As noun | Cannot be used as a noun | Can mean "the truth": 事情的究竟 |
| In questions | Very common | Common |
| Meaning | "after all" / "on earth" | "after all" / "actually" |
你到底去不去？
Are you going or not? (emphatic, spoken)
我想知道事情的究竟。
I want to know the truth of the matter. (noun usage — only 究竟)
Quick rule: As adverbs in emphatic questions, they're interchangeable. 到底 is more colloquial. Only 究竟 can be used as a noun meaning "the truth/outcome."
Quick Quiz (2 questions)
他想弄清楚事情的。
Used as a noun (事情的___) → only 究竟 can be a noun meaning "truth/outcome."
你想怎么办？
As adverbs in emphatic questions, both work and are interchangeable.
VS
竟然 vs 居然
unexpectedly — expressing surprise
▶
| 竟然 jìngrán | 居然 jūrán | |
|---|---|---|
| Meaning | Unexpectedly, actually | Unexpectedly, to one's surprise |
| Register | Neutral / written | More spoken / emotional |
| Emotion | Neutral surprise | Stronger disbelief or indignation |
没想到他竟然通过了考试。
Didn't expect he actually passed the exam. (neutral surprise)
他居然敢这样说！
He actually dared to say that! (stronger disbelief)
Quick rule: They're nearly synonymous. Use 居然 when you want to express stronger emotion (disbelief, shock, indignation). 竟然 is more neutral. In most cases, they're interchangeable.
Quick Quiz (2 questions)
这么简单的题，你做错了！
The tone expresses indignation/disbelief (这么简单…做错了!) → 居然 fits the stronger emotion better.
研究结果表明，这种方法有效。
Academic/neutral context → 竟然 is more appropriate for objective surprise.
Conjunctions / 连词
VS
不管 vs 无论
no matter — formal vs informal
▶
| 不管 bùguǎn | 无论 wúlùn | |
|---|---|---|
| Register | Colloquial / spoken | Formal / written |
| Pattern | 不管…都/也 | 无论…都/也 |
| Meaning | No matter, regardless | No matter, regardless |
不管多累，我都要坚持。
No matter how tired, I'll keep going. (spoken)
无论遇到什么困难，我们都不会放弃。
No matter what difficulties we encounter, we won't give up. (formal)
Quick rule: They mean the same thing and follow the same grammar pattern (…都/也). 无论 is more formal/written, 不管 is more colloquial. On the HSK exam, either is correct unless the question specifically tests register.
Quick Quiz (2 questions)
Which is more appropriate in a formal speech?
For formal speeches and writing, 无论 is more appropriate.
你去不去，我都去。
Both are grammatically correct here. 不管 is more natural in casual conversation.
VS
虽然 vs 尽管
although / even though — degree of concession
▶
| 虽然 suīrán | 尽管 jǐnguǎn | |
|---|---|---|
| Meaning | Although, though | Even though, despite |
| Strength | Mild concession | Stronger concession (emphasizes difficulty) |
| Pair with | 虽然…但是/可是 | 尽管…但是/可是/还是 |
| HSK level | HSK 3 | HSK 4 (new) |
虽然很贵，但是质量很好。
Although it's expensive, the quality is good. (mild concession)
尽管困难重重，他还是完成了任务。
Despite many difficulties, he still completed the task. (stronger concession)
Quick rule: 尽管 implies a bigger obstacle being overcome — use it when the contrast is strong. 虽然 is for ordinary "although" situations. On the HSK 4 exam, they may test whether you know 尽管 (the new HSK4 word) vs 虽然 (already learned at HSK3).
Quick Quiz (2 questions)
大家都反对，他还是坚持自己的想法。
Strong opposition (大家都反对) being overcome → 尽管 is better for emphasizing the strong concession.
他个子不高，但是打篮球打得很好。
Simple, mild contrast (not tall, but plays well) → 虽然 is more natural for ordinary concessions.
VS
即使 vs 就是
even if — hypothetical concession patterns
▶
| 即使 jíshǐ | 就是 jiùshì | |
|---|---|---|
| Register | Formal / written | Colloquial / spoken |
| Pattern | 即使…也 | 就是…也 |
| Meaning | Even if (hypothetical) | Even if (hypothetical, casual) |
即使失败了，我也不会后悔。
Even if I fail, I won't regret it. (formal)
就是下雨，我也要去。
Even if it rains, I'll still go. (casual)
Quick rule: Same meaning, same grammar (…也). 即使 for formal/written contexts, 就是 for casual speech. Both introduce a hypothetical worst case that won't change the outcome.
Quick Quiz (2 questions)
条件再艰苦，我们也要完成这个项目。
Formal context (project work) → 即使 fits better.
你不想去，也得去。
Direct, casual speech → 就是 is more natural in casual tone.
Verbs / 动词
VS
适合 vs 符合
suit/fit — personal match vs standard match
▶
| 适合 shìhé | 符合 fúhé | |
|---|---|---|
| Meaning | To suit, to be suitable for | To conform to, to meet (a standard) |
| Object | Person or situation | Standard, rule, requirement |
| Example | 适合我 (suits me) | 符合条件 (meets the conditions) |
这件衣服很适合你。
This outfit really suits you. (personal fit)
他的条件符合要求。
His qualifications meet the requirements. (standard match)
Quick rule: 适合 = "suits" a person/situation (subjective fit). 符合 = "meets" a standard/rule (objective compliance). You can't say 符合你 or 适合条件.
Quick Quiz (2 questions)
这个工作不太我。
Talking about personal suitability (___我) → use 适合.
你的申请我们的录取标准。
Meeting an objective standard (录取标准) → use 符合.
VS
坚持 vs 支持
persist vs support — similar sounds, very different
▶
| 坚持 jiānchí | 支持 zhīchí | |
|---|---|---|
| Meaning | To persist, to insist | To support, to back |
| Subject | Oneself (doing something) | Someone else's actions/ideas |
| Object | An action or opinion: 坚持锻炼 | A person or cause: 支持你 |
他每天坚持跑步。
He persists in running every day. (own action)
我支持你的决定。
I support your decision. (backing someone else)
Quick Quiz (2 questions)
不管多难，我都要下去。
Persisting in one's own effort → 坚持.
谢谢你一直我的工作。
Backing/supporting someone else's work → 支持.
About HSK 4 Confusable Words / 关于HSK4易混词
Many HSK 4 vocabulary words look or sound similar but have distinct meanings and usage patterns. These confusable word pairs (易混词) are a common source of errors on the exam, especially in the fill-in-the-blank reading section and the writing section. Understanding the differences between words like 关于/对于, 忽然/突然, and 虽然/尽管 is essential for achieving a high score.
This interactive tool covers 10 of the most commonly confused HSK 4 word pairs, organized by part of speech. Each pair includes a clear comparison table, example sentences showing correct usage, practical tips for remembering the difference, and quiz questions for immediate practice. For complete vocabulary review, visit our HSK 4 Vocabulary List with 1,000 words. Created by Mandarin Zone.