准确度让我惊讶。自适应问题精准找到我的水平，词汇量估算和我的模拟测试结果很吻合。
你的英语词汇量有多大？
这个自适应测试会根据你的知识水平动态调整。从中级词汇开始，难度根据你的回答实时变化。回答30道题来估算你的词汇量——从初级到专家级。
这是一个基于估算的词汇量评估，仅供教育和娱乐参考。结果为近似值。
关于测试
30道自适应题，估算你的词汇量。
测试从中级水平开始。每答对一题难度增加，答错则降低。30道题后，我们以±500词的精度估算你的词汇量。
测试原理
自适应测试，精确评估。
我们的自适应算法从5个难度词库中选取单词——初级、基础、中级、高级和专家级。测试动态调整以找到你的真实词汇水平，给出个性化的估算结果。
测试结果
你的词汇量估算已生成。
基于你在30道自适应题目中的回答，你将获得估算的词汇量、熟练等级以及详细的水平描述。
用户评价
学习者怎么说。
测试在适应你，而不是反过来。开始时很顺利，但高级词汇确实让我谦虚了不少！
我以为自己认识的单词比实际多得多！专家级词库很有挑战性，但很公平。很好的现实检验。
在准备雅思前做了这个测试。词汇量估算帮助我集中精力在需要加强的领域。非常有用。
English vocabulary guide
How big is your English vocabulary?
This adaptive test adjusts to your knowledge level. Start with intermediate words, and the difficulty changes based on your answers. Answer 30 questions to estimate your vocabulary size.
How the test works
You will answer 30 multiple-choice questions. Each question shows an English word with four possible definitions. Choose the correct definition. The adaptive algorithm adjusts difficulty based on your answers. After 30 questions, we calculate your estimated vocabulary size.
Adaptive difficulty
The test starts at intermediate level. When you answer correctly, the next question is harder. When you answer incorrectly, it becomes easier. This ensures the test accurately measures your vocabulary level in just 30 questions.
Understanding your result
Your result includes an estimated vocabulary size, a proficiency level (beginner to expert), and your accuracy percentage. Use this to track your English learning progress over time.
FAQ
How accurate is the vocabulary estimate?
The estimate has a precision of approximately ±500 words. It is based on an IRT-inspired adaptive algorithm that adjusts to your ability level. For a more precise measurement, take the test multiple times.
How many words are in the question bank?
The test draws from a bank of 60 words organized into 5 difficulty pools: beginner, elementary, intermediate, advanced, and expert. Each pool contains 12 carefully selected words.
Can I take the test more than once?
Yes! You can retake the test as many times as you like. The adaptive algorithm will select different questions based on the difficulty level you reach.
How does the scoring work?
本测试使用自适应难度算法（受IRT启发）。从中级水平开始。每答完一题，难度分数会相应调整：答对增加难度，答错降低难度。调整速度为0.5。30道题后，最终难度等级映射为估算的词汇量。
English Vocabulary Test