1、选择性必修一选择性必修一unit 2unit 2单词讲解单词讲解persuade劝说；说服（v）persuade sb(not)to do sth.说服某人(不）去做某事persuade/talk sb.into(out of)doing sthHe persuaded his friend _(go)back to school.to go/into goingI am not easily _(persuade).persuadedswitch替换；交换（v）switch转换；交换改变；转变（turn）开关；转换器(n.)turn/switch on/off 开/关（电灯、机器等）She
2、flicked a switch and turned the lamp on.We switched over to a different telephone service.I switched to a new doctor.开关替换切换；转换distant遥远的；（adj）distant遥远的；远处的（距离）疏远的（关系）心不在焉的(心里)a distant villagea distant cousina distant looksecure安全的；可靠的；安心的（adj）获得（v）拓展词汇：security 安全；警卫（n.)efficient高效的；效率高的（adj）拓展词汇：
3、inefficient 效率低的 efficiency 效率（n）efficiently ly高效地；效率高地（adv）He is an _(高效的）worker.The machine is working _(efficient).Because of her _,we finished the work ahead of time.efficientefficientlyefficiencypreference爱好；偏爱（n）preference爱好；偏爱（n）拓展词汇：prefer较喜欢；更喜欢（v.)prefer-preferred-preferred prefer A to B p
4、refer A to B 和B比起来更喜欢Ashow preference for 偏爱Parents should not show preference for any one of their children.instant noodle 速食面；方便面你知道方便面用英语怎么说么？instant coffee 速溶咖啡warning警告；警示；先兆（n）warn 警告（v）constant不断的；重复的；不变的（adj）constantly 不断地；一直（v）He suffers from constant headaches.She has struggled to maintain
5、 a _(不变的)weight.Fashion is _ (constant)changing.constantconstantlyabnormal不正常的；反常的（adj）反义词：normal正常的The results of the blood test were abnormal.critical严重的；关键的批判性的seriouscrucial/vitalThe premier faced a critical critical situation in September of that year.Develop a habit of critical thinking.This is a critical issue for our economy and our country严重的批判性的关键的
