Unit 3 Computers Learning about Language & Using language Key Words 1. download vt. 下载 2. virus n. 病毒 3. signal vi. & vt. 发信号 n. 信号 4. coach n. 教练 5. character n. 性格；特点 6. type n. 类型vt.& vi. 打字→typist n. 打字员→typewriter n. 打字机 7. electronic adj. 电子的→electricity n. 电→electrical adj. 与电有关的→electric adj.电的，用电驱动的 8. appearance n. 外观；外貌；出现→appear vi. 出现；呈现 9. niece n. 侄女；甥女→nephew n. 侄子；外甥 Key Phrases 1. make good use of 好好利用；充分利用 2. be crazy about对……着迷 3. come true实现 4. give sth. away赠送；捐赠；分发；泄露 5. consist of由……组成 6. in a way 在某种程度上 7. after all毕竟 8. with the help of在……的帮助下 9. deal with处理；安排；对付 10. watch over看守；监视 Key Sentence She programs us with all the possible moves she has seen while watching human games.(状语从句的省略) 1. give away ◆捐赠；分发；泄露；丧失，错失。 ?He gave away most of his fortune to the poor. 他把他的大部分财产都送给了穷人。 ?The headmaster gave away the prizes. 校长分发奖品。 ?Don’t give away the secret. 这项机密不可泄露。 ?I can never give away such a good chance. 我决不会错失这么好的机会。 【拓展延伸】 give back归还，送回 give off发出，放出 give in 屈服，让步；上交 give out分发，散发；用光，用尽 give up 放弃 用适当的介词或副词填空 1. Please give my pen _____. I need it now. 2. The gas gave _____ an unpleasant smell. 3. He has given _____ smoking. 4. Tom always gave _____ to his big brother. 5. The coal began to give _____. 【答案】 1. back 2. off 3. up 4. in 5. out 2. signal ◆(1)vi. & vt. 发信号；发暗号；示意。常见搭配： signal (sb.) that示意…… signal (to) sb. to do sth. 示意某人做某事 signal to sb. 向某人示意 ?She signaled the car to stop by raising her hand. 她举手示意车停下。 ?He signaled that it was time to leave. 他示意该走了。 ◆(2) n. 信号；暗号；指示灯。常见搭配： a danger/warning (stop) signal危险/警告(停车)信号 traffic signals 交通信号灯 ?At an agreed signal they left the room. 收到约定的信号后，他们离开了房间。 ?Chest pains can be a warning signal of heart problems. 胸部疼痛可能是心脏病的报警信号。 【易混辨析】signal/mark/sign/symbol signal 指为某一目的而有意发出的信号。 mark 普通用词，含义广泛。指在其他事物上留下的清晰可见的印痕(也可指为便于辨认而有意做的标记)或先天固有的标志。 sign 普通用词，指人们公认的事物的记号，也可指某种情况的征兆。 symbol 指象征或表达某种深邃意蕴的特殊事物。 1. 选词填空(signal/mark/sign/symbol) ①The snow showed no _____ of melting. ②A red light is a _____ of danger, which is even known to a five-year-old child. ③In the picture the tree is the _____ of life and the snake is the symbol of evil. ④The years have set their _____ on his brow(额头). 2. In our class, when the bell rang and the teacher closed his book, it was a _____ for everyone to stand up. A. signal B. chance C. mark D. measure 【答案】 1. ①sign ②signal ③symbol ④mark 2. A 【解析】句意：在我们班，铃声响起，老师合上课本，这就是大家起立的信号。signal信号，符合题意。chanc ... ...
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