语气副词：的确、反而、竟然、究竟
Explanation
语气副词用于表达说话人的态度、情感或语气。'的确'表示确认事实；'反而'表示与预期相反；'竟然'表示出乎意料；'究竟'用于疑问句加强追问语气。
Modal adverbs express the speaker's attitude, emotion, or tone. '的确' confirms a fact; '反而' indicates the opposite of expectation; '竟然' expresses surprise; '究竟' strengthens questioning in interrogative sentences.
Examples
这的确是我的错。
This is indeed my fault.
风不但没停，反而越来越大。
The wind didn't stop; instead, it got even stronger.
他还真有办法，问题马上就解决了。
He really has some ways; the problem was solved right away.
这道题很简单，同学们竟然都做错了。
This question is very simple, yet all the students got it wrong.
明天的晚会你究竟去不去？
Are you going to tomorrow's party or not?
Related Grammar Points
程度副词：格外、极、极其HSK 4四05
词类 · 副词
这三个词都是程度副词，用于修饰形容词或动词，表示程度。'格外'表示程度超过一般，特别；'极'表示程度达到最高点，非常；'极其'表示程度非常深，极、非常。
These three words are all degree adverbs used to modify adjectives or verbs, indicating degree. '格外' means the degree is beyond normal, exceptionally; '极' means the degree reaches the highest point, extremely; '极其' means the degree is very deep, extremely.
Examples (3)
老师今天格外开心。
The teacher is exceptionally happy today.
这些字极小，我都看不清楚。
These characters are extremely small; I can't even see them clearly.
校长是一个极其负责的人。
The principal is an extremely responsible person.
范围、协同副词：共HSK 4四06
词类 · 副词
副词“共”用于表示总括、合计，强调事物的总数或总量，通常放在动词或数量词前面。
The adverb '共' is used to express a total or sum, emphasizing the total number or amount of something, and is typically placed before a verb or a number.
Examples (2)
共有三十人出席会议。
A total of thirty people attended the meeting.
这本书共十五课。
This book has fifteen lessons in total.
时间副词：按时、即将、急忙、渐渐、尽快HSK 4四07
词类 · 副词
这些时间副词用来修饰动词，表示动作发生的时间、速度或方式。'按时'表示按规定时间；'即将'表示将要发生；'急忙'表示匆忙地；'渐渐'表示逐渐地；'尽快'表示尽可能快地。
These time adverbs modify verbs to indicate the timing, speed, or manner of an action. '按时' means on time; '即将' means about to; '急忙' means in a hurry; '渐渐' means gradually; '尽快' means as soon as possible.
Examples (5)
你要按时吃药。
You should take medicine on time.
同学们即将毕业。
The students are about to graduate.
快上课了，他急忙跑进教室。
Class is about to start, so he hurriedly ran into the classroom.
春天来了，天气渐渐暖和起来。
Spring has come, and the weather is gradually getting warmer.
你尽快给他回个电话。
You should call him back as soon as possible.
频率、重复副词：一再、再三HSK 4四08
词类 · 副词
“一再”和“再三”均表示动作的重复发生，强调次数多。'一再'侧重客观陈述重复行为，'再三'则带有主观强调或无奈意味。
Both '一再' and '再三' indicate repeated actions, with '一再' emphasizing objective repetition and '再三' conveying subjective emphasis or frustration.
Examples (2)
他一再表示自己不会出席这次会议。
He repeatedly stated that he would not attend this meeting.
我再三解释，他还是不相信。
I tried explaining multiple times, but he still didn't believe me.
关联副词：却HSK 4四09
词类 · 副词
“却”是表示转折的关联副词，用于连接两个分句，强调后一分句与前一分句在逻辑上形成对比或反差。
"却" is a conjunctive adverb indicating contrast, used to link two clauses and emphasize that the second clause presents a contrast or unexpected result compared to the first.
Examples (2)
我来了，他却没来。
I came, but he didn't.
同学们都出去活动了，他却坐在教室里面不动。
All the classmates went out to do activities, but he sat in the classroom without moving.
否定副词：未必HSK 4四10
词类 · 副词
‘未必’表示事情不一定如此，用于否定某种可能性，语气较委婉。
'Wei bi' means 'not necessarily' or 'may not', used to express that something is not certain, with a slightly more formal or gentle tone.
Examples (2)
这个消息未必可靠，咱们再等等吧。
This news may not be reliable; let's wait a bit longer.
别等了，他未必会来。
Don't wait; he may not come.