记忆方法
双解例句
小知识
A sedative is a drug that calms you down. If a patient is freaking out about getting an MRI or minor surgery, the doctor might prescribe a sedative to chill them out.
A sedative is anything that makes you sedate — peaceful, calm, tranquil. In medicine this word refers to drugs that relieve anxiety or tranquilizers that pretty much knock you out. But other non-pharmaceutical things can have sedative effects, like a soothing cup of tea or a relaxing glass of wine. The tryptophan in turkey is actually a natural sedative — that's why everyone is sleepy after Thanksgiving dinner!
实用短语
词根词缀
后缀: -ative
1. 表形容词,”有……倾向(性质)的;……的”; 2. 表名词,”人或物等”
adj.
affirmative 赞成的,肯定的affirm肯定+ative有……倾向(性质)的;……的→adj.赞成的,肯定的
argumentative 爱争论的,好辩论的argument争论+ative有……倾向(性质)的;……的→adj.爱争论的,好辩论的
authoritative 权威性的,命令式的authority权威,威信+ative有……倾向(性质)的;……的→adj.权威性的,命令式的
evocative 唤起的,激起的e出+voc喊+ative有……倾向(性质)的;……的→把感情喊出来
figurative 比喻的,借喻的figu形体,用形象比喻+ative有……倾向(性质)的;……的→adj.比喻的,借喻的
lucrative 赚钱的,有利可图的lucr钱+ative有……倾向(性质)的;……的→adj.赚钱的,有利可图的
representative 典型的,有代表性的represent代表+ative有……倾向(性质)的;……的→adj.典型的,有代表性的
talkative 罗嗦的talk讲话+ative有……倾向(性质)的;……的→adj.罗嗦的
adj.&n.
preservative 防腐的,防腐剂preserve保存+ative有……倾向(性质)的;……的→adj.&n.防腐的,防腐剂
sedative [药物]镇静的,镇静剂sed坐+ative有……倾向(性质)的;……的→adj.&n.[药物]镇静的,镇静剂
n.
representative 代表represent描述,表示+ative人或物等→n.代表
同义词
narcotic / depressant / sleepy
同根词
词根：sedate
adj.sedate安静的；沉着的
adv.sedately安详地；镇静地
n.sedation镇静；镇静作用；镇静状态
sedateness安详；镇静
vt.sedate给…服镇静剂