知识扩展
相关变形拓展
形容词形式：constant(持续的)→同义副词：continuously(持续地)；always(总是)
易混词辨析
constantly、always、often、continuously、frequently
1. constantly：副词 “不断地；频繁地”（如 “It rains constantly”“constantly check the time”），侧重 “有间隔但频繁发生”；
2. always：副词 “总是；一直”（如 “He always gets up early”），侧重 “无例外，100% 发生”；
3. often：副词 “经常；常常”（如 “We often go hiking”），侧重 “发生频率高，但非每次”；
4. continuously：副词 “连续不断地”（如 “The machine runs continuously”），侧重 “无间隔，持续发生”，与 constantly（有间隔）不同；
5. frequently：副词 “频繁地”（与 constantly 近义，如 “frequently visit friends”），更书面化。
相关单词
always总是often经常continual不断的ever曾经repeatedly重复地incessantly不间断地perpetually持久地forever永远continually不断地continuously不断地regularly有规律地frequently频繁地persistently固执地relentlessly无情地endlessly不断地ceaselessly不停地without没有stopping停止invariably不变地
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