[教案]unit 1 nature in the balance grammar and usage 教学设计牛津译林版(2019)必修 第三册内容预览-尊龙凯时人生就博

unit 1 nature in the balance grammar and usage（教学设计） i. learning objectives by the end of the lesson, students will be able to: 1. master the rules of ellipsis; 2. use the rules of ellipsis to improve their compositions; 3. raise their awareness of environmental protection. ii. key competence focus develop the thinking ability by comparing and summarizing. iii. predicted area of difficulty 1. explore the rules of ellipsis. 2. convey ideas using ellipsis correctly and properly. iv. teaching procedures step 1 lead-in t asks ss to look at some elliptical sentences in the daily life to arouse their interest. no smoking (is allowed here). parking (is allowed here). no photos (is allowed here). no fishing (is allowed here). 【设计意图：创设情景，激活学生认知，自然地引入主题。】 step 2 introduction of ellipsis 1. t asks ss to find the words that can be left out and tell the reasons why the words can be left out. i have done more than (what is) required. (you) open the window and the door for me, please. —will you go to the cinema with me —well, i’d like to (go with you). i know you can do better than i (can do). you shouldn’t come to this party unless (you were) invited. the man (whom) i saw is called david. 2. t introduces what ellipsis is. t: what is ellipsis ellipsis means leaving out words of a sentence when the meaning can still be understood. ellipsis is used when you do not want to repeat the words and phrases that are obvious. 【设计意图：初步了解省略的用法，为下一步的学习探究做准备。】 step 3 exploring the rules 1. t asks ss to read a conversation between jack and henry and write down the words that have been left out in the conversation on page 6. answers: no, i didn’t (watch the documentary about environmental protection on tv yesterday). —in short responses you can watch it online if you want to (watch it). —in infinitives i felt worried when (i was) watching the documentary. —after some conjunctions like if, when and while some call for the application of modern technology, and others (call for) a change of lifestyle. —in clauses with the same pattern and the same verb (have you) got any ideas —at the beginning of a sentence in informal speech (it/that) sounds great! —at the beginning of a sentence in informal speech 2. t asks ss to work out the rules and offers ss more examples to help them better understand the rules. we sometimes use ellipsis to avoid repeating one or more words when the meaning is clear. we can use ellipsis: * in short responses; —have you ever attended a talk about environmental protection —never. (= i have never attended a talk about environmental protection.) * in infinitives; you may go with them if you want to. (= you may go with them if you want to go with them.) —will you be able to come —i’d love to. (= i’d love to come.) * after some conjunctions like if, when and while; though very young, he is very good at painting. (= though he is very young, he is very good at painting.) you should be ... ...