Period 3 语言知识讲练 1．devote vt．把……奉献给；专心致力于 A great person is someone who devotes his / her life to helping others． 伟人是一生致力于帮助别人的人。 [知识拓展] (1)devote．．．to (doing) sth． 把……献给(做)某事 devote oneself to＝be devoted to 献身于；专心致力于 (2)devoted adj． 忠诚的；全心全意的；深爱的 (3)devotion n． 奉献；忠诚；热心；关爱 [即学即练] 单句语法填空 ①He is determined to devote his life_____ science． ②He married well and happily and was a_____(devote) father and husband． ③Neighbours devoted their spare time to_____(help) others． 2．limit vt．& n．限制，限定 There is a limit to the amount of pain we can bear． 我们能忍受的疼痛是有限度的。 [知识拓展] (1)set a limit on＝put a limit on 限制；对……加以限制 to the limit 达到极点 within limits 在某种程度上；有一定限制 (2)limit sth．to．．． 限定……；把……限制在…… limit sb．to (doing) sth． 限制某人(做)某事 (3)limited adj． 有限的；受限制的 be limited to 局限于 [即学即练] 单句语法填空 ①There is a limit to one's life，but no limit to_____(serve) the people． ②We must limit the expense_____ 10 pounds． ③Families are_____(limit) to four free tickets each． 3．convince vt．说服；使确信 Her arguments didn't convince everyone，but changes were made． 她的论点不能说服所有的人，但还是引起了一些变化。 [知识拓展] (1)convince sb．of sth． 使某人确信/相信某事 convince sb．that．．． 使某人相信…… convince sb．to do sth． 说服某人做某事 (2)convincing adj． 令人信服的 (3)convinced adj． 确信的；坚信的 be convinced of 相信…… be convinced (that)．．． 相信…… [即学即练] 单句语法填空 ①What he was saying in the interview was not_____(convince)． ②I am_____(convince) that you will be equal to the job． ③You need to convince the interviewers_____ your devotion and commitment． ④She convinced her mother_____(hold) a birthday party at home． 4．ruin vt．毁掉，糟蹋，毁坏 That one mistake ruined his chances of getting the job． 正是这个错误断送了他得到那份工作的机会。 [知识拓展] (1)ruin oneself 自取灭亡 ruin one's health/fame 毁坏某人的健康/名誉 (2)in ruins 毁坏；严重受损；破败不堪 bring sb．to ruin 使某人失败；使某人倾家荡产 fall/come into ruin 毁灭；败落 [即学即练] 单句语法填空 ①If you're addicted to computer games，you'll ruin_____(you)． ②As the best man，he failed to turn up，_____(ruin) my wedding． ③The houses on the seaward side of the road were all in_____(ruin)． 5．countless adj．无数的，数不尽的 She offered him emotional and practical support in countless ways． 她以数不清的方式给予了他情感上和切实的支持。 [知识拓展] count v． (按顺序)数数；计算(或清点)总数； 把……算入；包括 count on doing sth． 期望/指望做某事 count on sth．/sb． 指望/依靠某事/某人 count on sb．to do sth． 指望/依靠某人做某事 count down 倒计时；倒数 count in 把……算在内；考虑在内 [即学即练] 单句语法填空 ①If I got into trouble，I could always count_____ Rose． ②When the game gets started，you can count me_____． ③Don't count on other people_____(help) you out of tr ... ...
