2016年高中英语 Unit 4 Astronomy the science of the stars Language points课件 新人教版必修3.ppt

Period 2 Language points To the speaker: Confidence; Fluency; Accuracy! To the audience: Attention; Interaction English speech Learning aims 1. Master the usages of such important words and expressions as: exist, puzzle, in time, in one’s turn, prevent …from, cheer up, break out, watch out etc; learn to express yourself by using them. 2. Learn the method of constructing knowledge trees through self-study and cooperative exploration. 3. Enjoy the fun of expressing yourself using English and participate in class with a strong passion. For groups: 抓住自学，讨论，展示，点评环节 争创“优秀小组” For members: 认真落实各项任务 content 1. Learn the important words, phrases and patterns by yourself and try to make a summary of the usage of them according to the examples 2. Finish the little quiz to see if you have mastered them. demands 1. Study the sentences carefully and you can refer to the dictionary or other reference books 2. Make a mark where you can’t understand 3. Finish this task within 15 minutes Self-directed study words: 1. exist: vi. 存在; 生存 (1) exist in 存在于…... (2) exist on 靠......为生 (3) there exist... 某地存在......(4) come into existence 开始存在；成立 2. puzzle n. 迷；难题 vt.vi. （使）迷惑； （使）为难 (1) puzzle over 冥思苦想；苦苦思索 (2) be puzzled about 对……迷惑不解 (3) puzzling adj. 令人迷惑的 puzzled adj. 感到迷惑不解的 phrases: 1. in time 及时；终于 in time for sth. 赶上某事 on time 按时；准时 in no time 立即；马上 at no time 从不；绝不 2. in one’s turn 轮到某人；接着 (1)In turn 反过来，转而；依次；轮流；逐个 (2)Take turns to do sth. =take turns doing sth. 轮流做…… (3) It is your turn to do sth.. 轮到某人做某事 Special attention 3. prevent +宾语+(from)/stop+宾语+(from)/keep +宾语+from 阻止……干某事 4. cheer up (使) 感到高兴；(使) 感到振奋 cheer sb. on (赛跑比赛中)以喝彩声鼓励某人；为某人加油 cheerful adj. 快乐的；高兴的 5. break out/ take place/happen break out意思为“发生、爆发”，常指战争、灾难、疾病或者争吵等事件的发生，也可以表示突然大声叫喊等。 take place 指某事按照计划进行或者按照计划发生，此外还有“举行”之意. happen一般用于偶然或突发性事件. break away from逃脱；脱离