persistent、tenacious、relentless、insistent的区别
persistent
持续不断地坚持，通常指在困难面前不放弃。
tenacious
形容人非常顽强，紧紧抓住目标不放，强调意志力强。
relentless
不留情面、毫不放松地坚持，带有强烈的压力感或负面感。
insistent
坚持要求或坚持说某事，常用于表达强烈的请求或主张。
学习英语
| Word | 侧重点 | 语气 | 使用场景 |
|---|
| persistent | 持续不断，努力不放弃 | 中性，积极 | 学习、工作、态度等 |
| tenacious | 顽强抓住目标，不轻易放弃 | 积极，强调意志力 | 人或态度，意志坚强 |
| relentless | 毫不松懈，常带有压力或负面感 | 较强硬，可能负面 | 自然现象、压力、追击等 |
| insistent | 坚持请求或主张 | 强烈，有时让人觉得烦 | 请求、要求、坚持说话 |
❌ He is relentless to finish the work.
✅ He is persistent to finish the work.
❌ She was tenacious that we help her.
✅ She was insistent that we help her.
选择正确答案：The dog was ___ in chasing the ball, never giving up.
A. persistent
B. insistent
C. relentless
D. tenacious
选择正确答案：She was ___ on finishing her homework before dinner.
A. relentless
B. persistent
C. insistent
D. tenacious
选择正确答案：The rain was ___ and didn’t stop all night.
A. persistent
B. relentless
C. tenacious
D. insistent
Extended Words
Tip 记住：persistent强调持续努力，tenacious强调坚强意志，relentless强调毫不放松，insistent强调坚持请求。
Related Words- determined（坚定的）
- stubborn（固执的）