_Unit1 Grammar and Usage 预习单人教版（2019）高一下学期英语必修第三册.docx

Unit1 Nature in the balanceGrammar and usage【学习目标】1. Know the definition of ellipsis and the rules2. Understand the meaning of the stentence with ellipsis and know how to complete it3.Understand what others say with ellipsis and use correctly in daily life4.Think of some ways to protect environment and do it.预习案【学习过程】Step 1: 自主学习任务一：自学课本unit 1(page6-7)的词汇与短语要求：根据录音及单词音标，首先会读单词接着边读边写记单词，注意中英文的转换，最后默写单词Step 2: 单词自学检测探究案【合作探究】Step 1 Lead-in 1. Dialogue:See the dialogue in our daily life2. Question: Think about what the difference is between different ways to express.3.Definition of ellipsis:The omission from speech or writing of a word or words that are superfluous or able to be understood from contextual cluesStep 2 Reading 1.Passage: The dialogue between Jack and Henry2.Question:（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?3.Exploring the rules:Write down the words that have been left out of the sentences on page 6 of the textbook.(1)No, I didn’t (watch the documentary 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 idea?(6) ( ) Sounds great!4.Working out the rules Write down the correct forms of the words and phrase on page 6 of the textbook.5.SummaryWhat is ellipsis? Leaving out a word or words from a sentenceWhen can we use ellipsis? Avoid repeatingWhat’s the function of ellipsis? Concise Step 3 Usage of ellipsis 1. 简单句的省略（1）省略主语 (That/It) Sounds like a great idea!（2）省略表语 — Are you hungry? — No, I am not (hungry).（3）同时省略几个成分A.省略主谓或主谓一部分 Why (do you) not say hello to him?B.省略动宾 — Did you finish the homework? — No, I didnt finish (the homework) 2. 并列句中的省略（1）省略主语 Mr. Smith picked up a coin in the road and (Mr. Smith) handed it to a policeman.（2）省略谓语Some called for the application of the modern technology, and others (called for) a change of lifestyle.（3）省略谓语及状语I was born in winter in 1988 and Bob (was born in winter) in 1989.（4）省略部分谓语must have been3. 复合句中的省略（1） 宾语从句的省略 在say, know, think, believe, suppose, consider, find, decide等动词后面所接的一个宾语从句中，连词that可以省略；若后接多个宾语从句，只有第一个连词that可省略，其余的连词that不能省略。

There is no reason to suppose (that) shes lying（2） 状语从句的省略若从句的主语与主句的主语相同或者从句的主语是it，且谓语是be时，常同时省略从句的主语和beI felt worried when (I am) watching the documentary.If (it is) impossible, I will help you with your work.（3） 定语从句的省略A. 在限制性定语从句中，作宾语用的关系代词whom，which，that可省略添加标题The film star (whom/who/that)I like most is Bruce Lee.B. 定语从句中的“主语(关系代词) + be”有时可以省略Whats the language (that/which is) spoken in that country?C.关系代词引导非限制性定语从句，即使在从句中作宾语，也不可省略介词+关系代词”引导定语从句，关系代词不可省略This is the man, whom I spoke to yesterday.4.不定式中的省略保留不定式符号to的情况A. 不定式作某些动词的宾语时，常见动词如want ， like，love，care，hope，refuse, mean, agree, forget，remember，try，manage等 。

Im sorry I hurt your feelings. I didnt mean to.B. 不定式在句中作某些动词的宾语补足语或主语补足语时，常见动词如ask，advise，persuade, tell, wish, allow, permit, force等 At last they did as I told them to. (宾补)He would not have married her if he had not been forced to. (主补)不定式符号可省略的情况A. 主语部分或修饰主语的定语部分有实义动词do的各种形式，作表语的不定式可省略 to，也可保留toThe most important thing I should do is (to) give you some advice on how to learn a foreign language. B. 不定式做介词but，except等的宾语，且前面有实义动词do的各种形式时，须省略不定式符号toThey did nothing but watch TV last night. I dont want to do anything except help youC. 在see, hear, listen to, watch, notice，have，make，let等词后作宾语补足语时，须省 略不定式符号to Yesterday I listened to Mary speak movingly about her love story once again.5.介词的省略A. 表示行为方式的in在in this way, in the same way, in another way等词组中，可省略 介词。

He did it (in) this wayB.一些常和动名词、形容词一起搭配的介词常省略，而保留其后的 动名词，常见的句型有spend/waste time (in) doing, lose no time (in) doing； have difficult/trouble (in) doing； be busy (in) doing；stop/prevent sb. (from) doing 等She lost no time (in) giving the patient first aidStep 4 Applying the rules1.Read the short passage in B2 on Page 7 and put brackets around the words that can be left out Last weekend, I took part in a forest clean-up activity. It was organized by Green Hope, an organization devoted to protecting forests. At first I didn’t want to (1 ), but then I thought, “What if nobody goes?” Our team leader, Joe, took us to a forest outside the city. I was sad to see litter everywhere. There was a “No littering (2 )” sign at the entrance to the forest, but that didn’t stop people from throwing their rubbish on the ground. Joe divided us into two groups: one group cleaned up the north side of the forest, and the other (3 ) (4 )the sou。