情态副词：必须、差不多、好像、一定、也许
Explanation
情态副词用于表达说话人的态度、推测或确定性，如“必须”表示必要性，“差不多”表示接近某个程度，“好像”表示推测，“一定”表示强烈的肯定，“也许”表示可能性。
Modal adverbs express the speaker's attitude, speculation, or certainty, such as "must" for necessity, "almost" for approaching a degree, "seems like" for speculation, "definitely" for strong affirmation, and "maybe" for possibility.
Examples
要取得好成绩，大家必须努力学习。
To achieve good grades, everyone must study hard.
机票差不多要两千块钱。
The plane ticket is almost two thousand yuan.
今天好像要下雨。
It seems like it's going to rain today.
你到北京后，一定要去看看王老师。
After you arrive in Beijing, you must visit Teacher Wang.
我今年也许会去中国学习中文。
I might go to China to study Chinese this year.
Related Grammar Points
程度副词：多、多么、好、更、十分、特别、挺、有（一）点儿HSK 2二13
词类 · 副词
程度副词用于修饰形容词或动词，表示程度高低。其中'多/多么/好'多用于感叹句，'更'表比较级，'十分/特别/挺'强调程度高，'有（一）点儿'表轻微程度。
Degree adverbs modify adjectives/verbs to indicate intensity. '多/多么/好' are used in exclamations, '更' for comparatives, '十分/特别/挺' emphasize high degree, and '有（一）点儿' indicates slight degree.
Examples (8)
这孩子多可爱啊！
How cute this child is!
那些花多么漂亮啊！
How beautiful those flowers are!
这个教室好大啊！
This classroom is so big!
他很高，他弟弟更高。
He is very tall, and his younger brother is even taller.
这包子十分好吃。
These buns are extremely delicious.
王老师的儿子特别可爱。
Teacher Wang's son is particularly adorable.
那儿挺安静的。
It's quite quiet there.
今天天气有（一）点儿热。
The weather is a bit hot today.
范围、协同副词：全、一共、只HSK 2二14
词类 · 副词
这些副词用于表达范围或数量概念。'全'表示全部、都；'一共'表示总共、合计；'只'表示仅仅、只有。
These adverbs express scope or quantity concepts. '全' means 'all' or 'entirely'; '一共' means 'in total' or 'altogether'; '只' means 'only' or 'just'.
Examples (3)
同学们全来了。
All the students came.
我们班一共有二十人。
Our class has twenty students in total.
卡里只有二百块钱。
There's only two hundred yuan in the card.
时间副词：刚、刚刚、还、忽然、一直、已经HSK 2二15
词类 · 副词
时间副词用于表示动作发生的时间或状态：'刚/刚刚'强调动作刚发生不久；'还'表示状态持续；'忽然'表示突然发生；'一直'表示动作持续不断；'已经'表示动作已完成。
Time adverbs indicate when an action occurs or its state: 'just' emphasizes recent completion; 'still' shows ongoing state; 'suddenly' denotes unexpected occurrence; 'continuously' indicates unbroken duration; 'already' marks completed action.
Examples (6)
我刚从学校回到家。
I just got back home from school.
白老师刚刚从国外回来。
Teacher Bai just came back from abroad.
外边还在下雨呢。
It's still raining outside.
街上的灯忽然都亮了。
The street lights suddenly all turned on.
她一直在说话。
She has been talking continuously.
校长已经下班了。
The principal has already left work.
频率、重复副词：重新、经常、老、老是、又HSK 2二16
词类 · 副词
这些副词用于表达动作发生的频率或重复性，其中'重新'强调从头开始再次做，'经常/老/老是'表示频繁发生（'老/老是'带有负面语气），'又'表示重复发生。
These adverbs express frequency or repetition of actions. '重新' emphasizes doing something again from the beginning, '经常/老/老是' indicate frequent occurrence (with '老/老是' carrying negative connotation), and '又' denotes repetition.
Examples (5)
这篇作文我要重新写一遍。
I need to rewrite this essay from scratch.
我经常看见他在图书馆学习。
I often see him studying in the library.
这个汉字有点儿难，我老写错。
This Chinese character is a bit difficult; I keep making mistakes with it.
这个月北京老是下雨。
It keeps raining in Beijing this month.
我们队又进了一个球。
Our team scored another goal again.
关联副词：就HSK 2二17
词类 · 副词
“就”作为关联副词，常用于表示条件与结果的关系，通常与“如果”等词搭配，说明在特定条件下会产生的结果。
The adverb '就' is commonly used to indicate a conditional relationship, often paired with words like '如果' to show the result that will occur under a specific condition.
Examples (2)
如果明天天气好，我就去爬山。
If the weather is good tomorrow, I will go hiking.
你有时间的话，我们就一起出去走走吧。
If you have time, let's go out for a walk together.
方式副词：故意HSK 2二18
词类 · 副词
“故意”是方式副词，表示有意识地、有目的地做某事，强调行为是存心而非无意。
"故意" is a manner adverb that means "intentionally" or "on purpose," indicating that an action is done deliberately and with conscious intent rather than accidentally.
Examples (2)
说话的时候，他故意提高声音，这样大家都能听见。
While speaking, he intentionally raised his voice so that everyone could hear.
我不是故意弄坏电脑的。
I didn't break the computer on purpose.