Unit 1 Science and Scientists 词汇练习-2023-2024学年高二英语单元语法，词汇练习(人教版2019选择性必修第二册)

Unit 1 Science and Scientists 重点单词变形，词组，短语，句型练习 词性转换 1．infect vt. 使感染；传染→______________ n. 感染；传染→______________ adj. 传染的 2．subscribe vi. 认购（股份）；定期订购→______________ n. 订阅；订购 3．pure adj. 干净的；纯的→______________ n. 纯洁；纯粹→______________ v. 净化；使纯净 4．decrease n. &vt. &vi. 减少；降低→（反）______________n. 增加，提高 5．transform vt. & vi. （使）改观；转变→______________ n. 改变；转变 6．machine n. 机械；机器→____________ adj. 机械的；发动机的→____________ n. 机械师；机械修理工 7．defend vt. 保卫；防守→______________ n. 防御；防守 8．assist v. 帮助→______________n. 助理；助手→______________ n. 帮助；援助 9．gift n. 礼物；天赋v. 赋予→______________ adj. 有天赋的；有天才的 10．initial adj. 最初的的；开始的→______________ adv. 最初；首先 重点词组 1．once and for all 2．subscribe to 3．thanks to 4．break out 5．in charge of 6．come down 7．above all 一、用单词的适当形式完成句子 1．The reason why I can’t go travelling with you is I have something unexpected to deal with. 2．As nobody here knows what is wrong with the old man, we must send for a doctor (handle) the problem. 3．We usually find that reports on the same events contain different or even (contradict) information. 4．The soldier was determined (defend) his country against any foreign invaders, no matter the cost. 5．Washing your hands frequently is a simple but effective way to prevent the transmission of (infect). 6．It (suspect) that the drugs had been brought into the country by boat. 7．The (assist) took the book and checked the price on the back cover. 8．The young man seemed （change）much over the years. 9．When asked who (blame) for the mess, none of the kids stood out to take the blame it. Mrs Lin had no alternative but to lay the blame the bird that happened to fly into the house through the open window. 10．I was (aware) of his existence until now. 11．The population of this