专题03 状语从句（真题解析）-备考2021年高考英语语法分类讲解+十年真题解析

2019 1.【2019江苏】The doctor shares his phone number with the patients __________ they need medical assistance. A. if only B. as if C. even though D. in case 【答案】D 【解析】考查状语从句的连词。句意：医生给了病人他的手机号码，以防病人需要医疗援助。A. if only要是…多好；B. as if好像，仿佛；C. even though即使，尽管；D. in case以备，以防，免得。故选D。 2.【2019天津】Tom is so independent that he never asks his parents' opinion ___ he wants their support. A. since B. once C. unless D. after 【答案】C 【解析】考查连词辨析。句意：汤姆是如此独立，以至于他从来不征求父母的意见，除非他想得到他们的支持。since因为；once一旦；unless除非；after在……之后，根据题意，故选C。 2018 1.【2018江苏】_______ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights. A. Once B. Unless C. If D. When 【答案】B 【解析】考查连词词义辨析及语境理解。句意：除非你睡得好，否则一两个晚上之后，你会失去专注、计划和保持动力的能力。A. Once一旦；B. Unless除非；C. If如果；D. When当……时候。故选B。 点睛：本题考查连词辨析。解题时要区分清选择项的含义与区别，再联系句意进行判断，从而选出正确答案。 2.【2018天津】Let's not pick these peaches until this weekend ___________they get sweet enough to be eaten. A. ever since B. as if