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中文

A tool for teachers · new Beta

A student asks how 突然 is different from 忽然.You answer in two seconds.

299 sets of the near-synonyms teachers get asked about most, one card each. Search in class, copy it into your slides, teach — no more looking things up on the spot.

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What a card looks like

突然tūrán忽然hūrán

Say this in class

突然又能当形容词又能当副词；忽然是副词，只能放在动词前面。

Examples (6 in all, with pinyin and English)

  • 他突然站了起来。忽然也可以
  • 我忽然想起来，钥匙忘在家里了。
  • 这个消息太突然了。✗太忽然了

A real student mistake✗ 这件事很忽然。→ ✓ 这件事很突然。

Also: common word partners, 6 exercises, a teacher's note, a 4-page PPT

Every set has

In class

  1. 1

    Search

    Type a word, its pinyin or a word partner; the set is there in two seconds.

  2. 2

    Explain

    Read the one line, show two or three examples, point at the usual mistake.

  3. 3

    Practise

    Put the exercises on screen and open the answers one by one.

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Card (Visa, Mastercard…)

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Not sure yet? Start with the three free sets: 切／剁／剪、举办／举行／进行、突然／忽然

One payment, lifetime access, nothing renews. Cards go through Stripe; WeChat and Alipay orders open once I confirm them. All 299 sets are here, and I have not reviewed every card yet. If something looks wrong, press Report and tell me.

Try three sets first

突然／忽然, 举办／举行／进行, and 切／剁／剪 (with pictures). The real tool is right below — use it.

词性差异Lesson 1Awaiting review
tūrán
突然
形容词／副词 adj. / adv.HSK 3
hūrán
忽然
副词 adv.HSK 4
Say this in class

突然又能当形容词又能当副词；忽然是副词，只能放在动词前面。

突然 works as an adjective AND an adverb. 忽然 is only an adverb — it must sit in front of a verb.

Common collocations

突然

很突然太突然了突然的消息突然停电

忽然

忽然下雨忽然想起忽然停下忽然笑了
Examples · 6
  1. 1
    他突然站了起来。
    Tā tūrán zhàn le qǐlái.
    He suddenly stood up.
    忽然也可以
  2. 2
    我忽然想起来，钥匙忘在家里了。
    Wǒ hūrán xiǎng qǐlái, yàoshi wàng zài jiā li le.
    I suddenly remembered I'd left my keys at home.
  3. 3
    这个消息太突然了。
    Zhège xiāoxi tài tūrán le.
    This news is too sudden.
    ✗太忽然了
  4. 4
    发生了一件很突然的事。
    Fāshēng le yí jiàn hěn tūrán de shì.
    Something very sudden happened.
    ✗很忽然的事
  5. 5
    天忽然黑了下来。
    Tiān hūrán hēi le xiàlái.
    The sky suddenly went dark.
  6. 6
    他的离开很突然。
    Tā de líkāi hěn tūrán.
    His leaving was very sudden.
Students often say
✗这件事很忽然。✓这件事很突然。
Teacher's note

突然还能修饰名词（突然的变化、突然袭击），忽然不行。学生说“忽然的事情”就是这个坑。

Exercises6 items · tap to reveal each answer
  1. 1.他来得很，我们都没准备好。
  2. 2.这个决定太了，大家都没想到。
  3. 3.我想起来，今天是他的生日。
  4. 4.发生了一件很的事。
  5. 5.天黑了下来。
  6. 6.哪句不能说？①他忽然笑了　②这件事很忽然
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