Unit 5 知识讲解--2022-2023学年度八年级英语下册基础知识专项讲练（人教版）1

Unit 5 What were you doing when the rainstorm came？（知识讲解） go off的用法 【知识详解 】 go off意为“(闹钟)发出响声”. My alarm goes off at six every morning.我的闹钟每天早晨6点响. 归纳 go off还有“离开”和“变质”之意. Bob went off to get a drink.鲍勃拿饮料去了. Meat goes off quickly in hot weather.热天肉变质得快. 拓展 go的短语小结: (1) go down下降 (2)go out出去 (3)go away离开 (4) go back回去 (5) go on继续 (6) go over仔细检查 (7) go up上升增长 【经典练】Bad luck! My alarm didn't________ this morning and I was late for school. A. go off B. run off C. put off 解析 句意:倒霉！我的闹钟今天早晨没响,我上学迟到了.go off意为“(闹钟)发出响声＂;run off意为“溢出”;put off意为“推迟”.根据句意可知答案选A. 答案 A pick up的用法 【知识详解 】 本句中的pick up意为＂接电话”.pick up有如下含义: 接电话 The phone rang. I didn't pick up because I was busy. 电话响了,我没有接电话,因为我很忙. 检起;拾起 Please pick up the ruler on the ground.请把地上的尺子检起来. 搭载;接人 My mother agreed to drive her new ear to pick me up. 我妈妈同意开着她的新车来接我 注意：pick it up把它捡起来 pick them up把它们捡起来 pick up the book= pick the book up把书捡起来 (注意人称代词放中间，名词放中间放后面都可以) 【经典练】I called you several times, but you didn't________. A. pick up B. take up C. look up D. stay up 解析 句意:我给你打了几次电话,但是你都没有接.pick up意为“接电话;捡起”;take up意为“占据;开始从事”;look up意为“查阅”;stay up 意为“熬夜”.由句意可知答案选A. 答案 A beat与win的辨析 【知识点详解 】 beat意为“敲打”，还可意为“打败”.当“打败”讲时,其与win的用法区别如下: beat与win辨析 ①win意为“赢;获胜”,作及物动词时,充当win的宾语的是比赛、战争、奖品、金钱等名词,即race、match、game、competition、war、prize等 Mary won first prize in the competition.玛丽在竞赛中获得第一名. ②beat意为“打败;战胜”,但跟win的用法不同,它后面跟的是比赛、竞争中的对手、战争中的敌人或指人或球队的名词或代词. He beat me at chess.他下国际象棋赢了我. 二者的反义词为lose(lost, lost), 表示“输给某人”用lose to sb. 【经典练】 -Who________ the singing competition? -I heard Joe________ Jill in the competition. A. won; won B. beat; won C. won; beat D. beat; beat 解析 句意:谁在唱歌比赛中获胜了?----我听说是Joe在比赛中打败了Jil.win"获得;赢得”,后面常跟比赛、奖品、战争、荣誉类名词;beat“打败”,后面常跟比赛、竞争中的对手、战争中的敌人或指人或球队的名词或代词.根据句中的 the singing competition 及 Jill 可知分别用won和beat,故答案选C. 答案 C in silence的用法 【知识点详解 】 in silence是固定短语,意为“沉默;无声”,其中 silence是名词,意为“沉默;缄默;无声”. They hugged each other in silence for a long time.他们默默地拥抱