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1、Book 3 Unit 1 Nature in the balanceGrammar and usageEllipsisTeaching objectives:By the end of this section, students will be able to:1. learn about the functions of ellipsis;2. summarize the general rules of ellipsis;3. apply the rules of ellipsis in the new context.Teaching important and difficult
2、points:1. To understand the functions and structures of ellipsis;2. To apply the rules of ellipsis in the new context.Step1 Lead in Students enjoy a video from the movie The Kings Speech that they have watched before, and pay attention to the actors lines.Q:1. What are left out in the dialogue? (此对话
3、省略了哪些内容呢？)Q:2. What is Ellipsis? Ellipsis means leaving out a word or words from a sentence. We can use ellipsis when the meaning can still be understood without using a word or certain words. In other words, ellipsis is used when you do not want to repeat some words or phrases whose meaning is obvi
4、ous. Using ellipsis is an efficient way to make sentences concise（简洁）.为了使语言简洁或避免重复，省略句中的一个或几个句子成分，这种语法现象称为省略。运用省略手法，可以避免重复，使句子简练。Step 2 Exploring the rulesToday we will read another dialogue about a documentary on environmental protection made by Jack and Henry.Students read the dialogue in pairs an
5、d answer the following questions：1.What is the documentary about?2.How did Jack feel when watching the documentary?3.What do the leading experts suggest doing to solve the environmental problems?Students write down the words that have been left out in the brackets below. 1. No, I didnt (watch the do
6、cumentary about environmental protection on TV yesterday).2. You can watch it online if you want to ( ).3. I felt worried when ( ) watching the documentary.4. Some call for the application of modern technology, and others ( ) a change of lifestyle.5. ( ) Got any ideas?6. ( ) Sounds great!Students wo
7、rk out the rules in the table on P6.Step 3 Working out the rulesWhen can we use ellipsis?Whats the function of ellipsis?常见的省略现象有以下几种情况：1. 在非正式场合，如果语境清晰，常省略主语或主语和动词。如：(Are you) Ready?Exercise:还原句子中省略的部分：(1). Beg your pardon. (2). Sounds like a good idea. (3). Anything wrong? 2. 在简短对话中，答句常保留主语和助动词，省略其
8、后主要动词以及上句出现过的其他内容。如：Did you go to the museum yesterday?No, I didnt (go to the museum yesterday).3.在并列句结构中，常省略与前面相同的主语、谓语或其他成分。如：Peter entered the classroom and (Peter) sat at his desk.I like dancing but my brother (likes) singing.What I said made Jack happy but (what I said made) Jane angry.Exercise
9、: 用括号标出可省略的部分:(1) I study at college and my sister studies at high school.(2) When summer comes, the day is getting longer and longer, and the night is getting shorter and shorter.4. 从属连词when、where、if、than 等后常用省略结构。如：You should be careful when (you are) crossing the road.You need to make improvement
10、s where (it is) necessary.Please call me back if (it is) possible.I love English more than (I) ever (loved English). Exercise:用括号标出可省略的部分:(1). When he was still a boy of 10, he had to work day and night.(2). If it is necessary Ill explain to you again.5. 动词不定式作宾语或宾语补足语时，在后句的动词不定式结构中，常省略与前句重复的to 后面的内
11、容。如：You dont have to do it if you dont want to (do it).Youd better not take medicine unless your doctor told you to (take medicine).在to be 或to have done 结构中，省略时往往保留be 或have。如：I am busier now than I used to be (busy).Has Mike finished his project?He seems to have (finished his project).Exercise:用括号标出
12、可省略的部分:(1). Are you going there? Yes, Id like to go there.(2). He didnt give me the chance, though he had promised to give me the chance.Step4 Applying the rulesAsk students finish the exercise of part B1 and B2 on P7.Step 5 Group workStudents talk in pairs to design some slogans about environmental protection by using ellipsis. Part B3 on P7学科网（北京）股份有限公司