五种音符时值
每种音符持续的时间都不一样。我们用拍来计算它们的长短，以四分音符为一拍。
| 音符 | 拍数（四分音符） | 样子 |
|---|---|---|
| 全音符 | 4 | 空心符头，没有符干 |
| 二分音符 | 2 | 空心符头，有符干 |
| 四分音符 | 1 | 实心符头，有符干 |
| 八分音符 | 半拍 | 四分音符加一条符尾（或一条符杠） |
| 十六分音符 | 四分之一拍 | 四分音符加两条符尾（或两条符杠） |
Grade 1 Music Theory
Notes, rhythm, first keys and terms, step by step.
Free
9 units, 13 lessons
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Mistakes
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What you’ll be able to do
- 计算延音线和附点音符的总时值
- 说出高音谱号和低音谱号中的音名，包括中央C
- 按数字找到音阶的某个音级
- 说出主音上方音程的度数
- 认出并补全主三和弦
- 把力度记号按顺序排列
Units and lessons
9 units, 13 lessons
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A look inside
音符和休止符
Alongside the lessons
Music terms and the metronome
About this grade
Notes, rhythm, the first major keys and the words on the music: Grade 1 theory taught step by step, then practised.
Follows the ABRSM Music Theory syllabus. ABRSM is a trade mark of its owner; Brainlag is independent and is not affiliated with or endorsed by ABRSM. Every example and question is original. Results are Brainlag estimates, not exam results.
Questions
Which syllabus does it follow?
It follows the ABRSM Music Theory syllabus for Grade 1 (the syllabus from 2020, checked against ABRSM on 9 October 2026). Brainlag is independent and not affiliated with ABRSM.
What is free?
Every lesson and its practice. Brainlag Plus (£14.99 a month) adds the topic tests and the mock paper.
Do I need an account?
No. Progress saves in this browser; sign in to keep it on every device.
How long does it take?
About 2 hr 50 min of lessons in 9 units. Lessons take 10 to 15 minutes each.