Physicians—frustrated by their inability to cure the disease and fearing loss of hope in the patient—too often offer aggressive treatment far beyond what is scientifically justified.【2003 Text 4】
思考题本句的插入语中,是什么与什么平行并列?分别表示什么意思?
生词 
✅ physician /fɪˈzɪʃn/ n. 医生;内科医生
✅ frustrate /frʌˈstreɪt/ v. 使沮丧,使挫败;阻止
 ✅ inability /ˌɪnəˈbɪləti/ n. 无力,无能
✅ aggressive /əˈɡresɪv/ adj. 极端大胆的;侵略性的,好斗的
✅ treatment /ˈtriːtmənt/ n. 治疗,处置;对待,待遇
✅ scientifically /ˌsaɪənˈtɪfɪkli/ adv. 科学地
✅ justified /ˈdʒʌstɪfaɪd/ adj. 合理的,有正当理由的
✅ aggressive /əˈɡresɪv/ adj. 极端大胆的;侵略性的,好斗的
✅ treatment /ˈtriːtmənt/ n. 治疗,处置;对待,待遇
✅ scientifically /ˌsaɪənˈtɪfɪkli/ adv. 科学地
✅ justified /ˈdʒʌstɪfaɪd/ adj. 合理的,有正当理由的
语法重点
✅ 断开长难句:根据连接词what,可以把句子断开为2段。【句1】主句:Physicians—frustrated by their inability to cure the disease and fearing loss of hope in the patient—too often offer aggressive treatment far beyond...【句2】宾语从句:what is scientifically justified
✅ 简化主句:简化前:Physicians—frustrated by their inability to cure the disease and fearing loss of hope in the patient—too often offer aggressive treatment far beyond...简化后:Physicians … offer … treatment …
✅ 插入语中的平行结构:两个破折号中间隔开的是插入语。插入语中,两个非谓语动词的词组frustrated by their inability to cure the disease和fearing loss of hope in the patient,通过and连接,构成平行结构,补充说明名词physicians。1)非谓语动词frustrated(done)表示被动,后接by介词短语表示动作的发出者;非谓语动词to do的词组修饰名词inability。2)非谓语动词fearing(doing)表示主动;of介词短语修饰名词loss;in介词短语修饰名词词组loss of hope。