复习：五种音符时值
以四分音符为一拍来数：每种音符时值都是前一种的一半，而且每种音符都有一个同样长的休止符（全休止符、二分休止符，等等）：
| 音符 | 拍数（四分音符） | 休止符 |
|---|---|---|
| 全音符 | 4 | 挂在线的下面 |
| 二分音符 | 2 | 坐在线的上面 |
| 四分音符 | 1 | 曲折的形状 |
| 八分音符 | 半拍 | 一个小钩 |
| 十六分音符 | 四分之一拍 | 两个小钩 |
Grade 2 Music Theory
Ledger lines, triplets, minor keys and more terms.
Free
9 units, 16 lessons
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What you’ll be able to do
- 读懂三连音
- 读懂一个小节里的临时变音记号
- 按数字找到音阶的任意音级
- 说出主音上方音程的度数
- 认出主三和弦，并把它补完整
- 把力度记号按顺序排列
Units and lessons
9 units, 16 lessons
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A look inside
音符、休止符和附点
Alongside the lessons
Music terms and the metronome
About this grade
Ledger lines, triplets, the first minor keys and more terms: Grade 2 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 2 (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 3 hr 25 min of lessons in 9 units. Lessons take 10 to 15 minutes each.