云南省弥勒县庆来中学高中英语 Unit 3 A healthy life Period 3 Grammar—the Use of “It”优秀教案 新人教版选修6.doc

period 3grammarthe use of “it”(1)教学内容分析this teaching period mainly deals with the grammar：the use of “it”the impersonal pronoun “it” is used frequently in english and has many different functions.“it” can be used in the subject or object position，to stand for an infinitive，ing form or a clause.the impersonal pronoun “it” can be used to talk about time，distance，weather，etc.“it” can also be used for emphasis.in this period we will focus on only part of its usages，that is，the use of “it” when the subject of a sentence is a clause，an infinitive，or the ing form.三维目标设计knowledge and skills1to let the students learn the use of “it”2to enable the students to use “it” correctly and properly.process and methods1to ask the students to read the reading passage again，pick out the sentences with the word “it” in them and write some on the blackboard.2to ask the students to discover how “it” is used in various ways.3to ask the students to do the exercises in discovering useful structures on page 21 for students to master the use of “it”4to ask the students to summarize the use of “it”5to ask the students to do the exercises in using structures on page 57 and some other additional exercises for consolidation.emotion，attitude and value1to get the students to become interested in grammar learning.2to develop the students ability of comparing and summarizing.教学重、难点1to get the students to master the structure and usages of the pronoun “it”2to enable the students to learn how to use “it”step 1revision1check the homework exercises.2dictate some new words and expressions.3translate the following sentences into english：(1)她对电视入了迷。(2)虽然有暴风雨，我们依旧准点到达了火车站。 (3)我每次去访问他，他都不在。suggested answers：(1)she is addicted to television.(2)we arrived at the station in spite of the storm.(3)every time i call on him，he is out.step 2warming up ask the students to reread the passage and find out the sentences with the word “it” in them.for example：(1)it is a beautiful day here and i am sitting under the big tree at the end of the garden.(2)it seems amazing that at my age i am still fit enough to cycle 20 kilometres in an afternoon.(3)your mother tells me that you started smoking some time ago and now you are finding it difficult to give it up.(4)it might help you to stop and strengthen your resolve.ask the students to think about the use of “it” according to the above four sentences.step 3grammar learningask the students to study the following sentences and try to summarize the structure and usages of“it”1the personal pronoun “it” and the impersonal pronoun “it”(1)toms mother kept telling him that he should work harder but it didnt help.(2)who is knocking at the door?its me.(3)its about five kilometers from here to the railway station.(4)its getting colder and colder every day.2“it” is used in the subject or object position.(1)she thought it no use telling him about that.(2)i remember i made it clear to you that i was not coming.(3)its important to do proper memory work in the study of a foreign language.(4)it is no use learning without thinking.(5)it is a pity that you didnt see such a good film.step 4summing uptry to help the students draw the following conclusions.1“it” is a very useful word and can be used in many ways.2the personal pronoun “it” can substitute something that is mentioned before.in some certain situations，“it” can stand for an unidentified person or a baby.3the impersonal pronoun “it” can be used to talk about time，distance，weather，etc.4“it” can act as a subject or an object，while the real subject or object can be put backwards in the form of an infinitive，ing form or a clause.step 5grammar practiceask students to do the following exercises：1rewrite the sentences using “it” structures given.(1)giving up smoking is difficult.(it is.)(2)most people believe smoking causes cancer.(it is believed.)(3)the night was dark and stormy when the old man started his journey.(it was a.)(4)dont quit on a stressful day.(its no use.) suggested answers：(1)it is difficult to give up smoking.(2)it is believed that smoking causes cancer.(3)it was a dark and stormy night when the old man started his journey.(4)it is no use trying to quit on a stressful day.2do the remaining exercises in exercise 2 in discovering useful structures on page 21.3first ask students to do the exercises individually，and then let them discuss and check their answers with their partners，and finally give them the correct answers and deal with any problems they might meet.step 6getting more about the grammar1it作形式主语的几种句型itbe形容词/名词(difficult/necessary/a rule/a duty)for/ofsb.to do sth.itbe形容词/名词(difficult/necessary/a rule/a duty)that clauseitbe过去分词(said/reported/known)that clauseitbe形容词/名词(useless/no use/no good)doingittakes sb.some timeto do sth.itseems/appearsthat clauseitseems/appearsas if clause2it作形式宾语的特殊用法。某些及物动词或短语不能加宾语从句，此时须先用it作形式宾语，然后接宾语从句。此种用法常用于like，dislike，hate，appreciate，depend on，see to等后。如：i hate it when people talk with their mouths full.you may depend on it that they will support you.ill appreciate it if you close the door for me.i like it in the autumn when the weather is clear and bright.3it 引起的几个易混的时间句型1)its time for sb.to do sth.和its(about/high) time that sb.did sth.(should do sth.)。例如：its time for us to go to bed.its(about/high)time that we went/should go to bed.注意：its (about/high) time that句型中，谓语动词须用虚拟语气，即用动词的过去式或“should动词原形”(should不能省略)。(2)it/this/that isthe first/second timethat sb.has/have done sth.和it/this/that was the first/second time that sb.had done sth.例如：this is the fourth time that she has rung you today.it was the second time that i had visited the great wall last year.(3)it will be long/hours/days/years before sb.do/does sth.和it was long/hours/days/years before sb.did sth.例如：it will be two years before we meet again.it was a long time before i got to sleep again last night.(4)it is/has beenyears/days/weeks since sb.did sth.和it was years/days/weeks since sb.had done sth.例如：what was the party like?wonderful.its years since i enjoyed myself so much.it was years since i had began to learn english.(5)it is/was具体时间点when clause。例如：its 6 oclock when i go home from school every day.it was five oclock when they finished the job.注意：在本结构中，when引导的从句是定语从句，具体时间点是先行词。step 7summing uptry to help the students draw the following conclusions.1there are many sentence patterns in english with “it” in them.“it” has many functions.2when “it” acts as a subject or an object，the real subject or object can appear in the form of an infinitive，ing form or a clause.the impersonal pronoun “it” can be used to talk about time，distance，weather，etc.step 8playing a game1get students to form groups of 6.2let students play the game “what is it？”spend some time making up clues to identify several objects/illnesses/habits in this unit.then read your clues to your partner and see if he/she can identify them.choose the best ones to read to the class.examples：it is a bad habit for both males and females.it is something you shouldnt start because you will be addicted to it.it is something which is illegal.it is a very expensive habit and so it will waste your money.step 9closing down by a quizshow students the following on the screen or give out test papers to them.1it took us over an hour_ along the street.awalk bto walk cwalking dwalked 2i think it a great honor_ to visit your country.ato invite binviting chaving invited dto be invited3many people now make_ a rule to buy cards for their friends before christmas.athemselves bit cthat dthis 4_ is very clear to everyone that he is round and tall like a tree.athis bwhat cthat dit 5in the united states，bus travel doesnt cost much as train travel，_？adont they bdoes it cdo they ddoesnt it6someone is at the door；who is_？athis bthat cit dhe 7_ raining hard for three hours without st