HSK 2 · Word classes › Adverbs › Frequency adverbs
HSK 2 Frequency Adverbs: Using 常 and 经常 Naturally
常 and 经常 both mean “often/frequently”. In the basic patterns here, they precede the action phrase. 不常 and 不经常 mean “not often”; use them to describe habits and repeated activities.

奶奶常去公园。
常 sits directly before the single-syllable verb 去.
× 我吃面条经常。
Incorrect: Placing 经常 at the end of the sentence after the object copies English word order and is ungrammatical in Mandarin. Replace with 我经常吃面条。
Corrected example: 我经常吃面条。
Read the full explanation and examples
Core Meaning and Syllabus Scope
In the HSK Level 2 grammar outline, 常 and 经常 are introduced together as frequency adverbs (频率副词). Both words express that an action happens often, regularly, or at short intervals over a period of time. When you want to move beyond describing single events and start talking about your routines, hobbies, or regular habits, these two adverbs are your primary tools.
Sentence Structure and Word Order
In Mandarin, adverbs of frequency must come before the verb they modify, not after the object. In a standard sentence, both 常 and 经常 stand after the subject (and any general time word like weekend or evening) and directly before the action verb.
奶奶常去公园。
常 sits directly before the single-syllable verb 去.
他周末经常打篮球。
Time words like 周末 appear before the frequency adverb 经常.
If the sentence includes a prepositional phrase indicating location (with 在) or a companion (with 跟 or 和), the frequency adverb usually goes before that prepositional phrase so that it scopes over the entire activity.
哥哥常在家做饭。
常 is placed before the location phrase 在家 so that it modifies the whole activity of cooking at home.
Comparing 常 and 经常: Rhythm and Flexibility
In most everyday affirmative sentences, 常 and 经常 are interchangeable in meaning. However, because 常 has one syllable and 经常 has two, they behave slightly differently in natural Chinese rhythm and sentence grammar.
- Syllable rhythm: 常 is concise and pairs very smoothly with single-syllable verbs (such as 常去, 常来, 常看, or 常吃) in brisk spoken Mandarin. 经常 has a fuller two-syllable weight that pairs naturally with both one-syllable and two-syllable verbs.
- Both 常有朋友来我家 and 经常有朋友来我家 are possible. A one-syllable adverb need not be banned from an existential sentence just because it is short.
- This lesson practises the frequency-adverb use before predicates. 经常 also has other uses in expressions such as 经常性工作 (“regular work”), but do not build a modifier by adding 的 mechanically to every frequency word.
经常有朋友来我家。
经常 can begin an existential sentence before 有. 常 can also do this: 常有朋友来我家 is possible. Do not use this sentence to claim that 常 is banned at the start of a clause.
Negation and Usage Limits
To negate how often a habit occurs, use 不常 or 不经常 (“not often”). This is different from 经常不... or 经常没..., which say that a negative situation happens often. For example, 他经常没吃早饭就出门 means he often leaves without having eaten breakfast; 没 is inside the activity, not a mechanical replacement for 不 in 不经常.
我晚上不常喝咖啡。
不常 is a compact, natural way to express “not often” here.
妹妹不经常看电视。
不经常 is also fully natural for negating habitual frequency.
Keep in mind an important grammatical limit: when negation or degree adverbs are involved, placement matters. To say not often, put 不 before the adverb (不常 or 不经常). Also, avoid combining 常 or 经常 with the completion particle 了 for a single one-off event, since frequency adverbs require repeatable actions.
Common Learner Mistake: Sentence-Final Placement
English speakers frequently place the word often at the very end of a sentence (for example, I eat noodles often). Translating this word order directly into Mandarin produces an ungrammatical sentence. In Chinese, neither 常 nor 经常 can stand at the end of a clause after the verb and object.
× 我吃面条经常。
Incorrect: Placing 经常 at the end of the sentence after the object copies English word order and is ungrammatical in Mandarin. Replace with 我经常吃面条。
Corrected example: 我经常吃面条。
我经常吃面条。
Correct replacement: Place 经常 after the subject 我 and before the verb 吃.
Always check that your frequency adverb sits firmly in the pre-verbal slot between the subject and the predicate.
Frequently asked questions
Does 经常 represent a higher frequency than 常?
No. Both words express the same degree of frequency (often). The difference is rhythmic and grammatical: 常 is a single-syllable word that binds tightly to verbs and is very common in the negative form 不常, while 经常 is a two-syllable word that can be used in slightly more varied sentence positions.
Should time words like 周末 or 晚上 go before or after 常 and 经常?
Often place a general time frame before the frequency adverb: 我周末经常运动. Other orders can change the scope or emphasis, so this is a useful basic pattern rather than the only possible position for every time phrase.
What about 常常?
常常 is another common two-syllable word meaning often, closely related to 常. However, in the supplied HSK Level 2 grammar syllabus row for frequency adverbs, the specified target items are 常 and 经常.