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

Period 3 grammerthe use of it (1)教育内容分析this teaching period mainly deals with the grammer:the use of it 。the impersonal pronoun“it”is used frequently in English and has many different fun Functions。“it”是be used in the subject or object position，to stand for an infinity，-ing form or a clause。the impersonal pronoun“it”can be used to talk about time，distance，weather，etc .“it”是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 infinity3d目标设计Knowledge and skills1.to let the students learn the use of it 。2.to enable the students to use“it”correctly and properly。Process and methods1.to ask the students to read the reading passage again，pick out the sentences with the word it in them and write some on the blackboard2.to ask the students to discover how it is used in various ways。3.to ask the students to do the exercises in discvering useful structures on page 21 for students to master the use of it 。4.to ask the students to summarize the use of it 。5.to ask the students to do the exercises in using structures on page 57 and some other additional exercises for consolidation .Emotion，attitude and value1.to get the students to become interested in grammer learning。2.to develop the students ability of comparing and summariazing。教学沉重而困难1.to get the students to master the structure and usages of the pronoun it 。2.to enable the students to learn how to use“it”。Step 1 Revision1.check the homework exercises。2.宏观some new words and expressions。3.translate the following sentences into English:(1)她醉心于电视。即使有暴风雨，我们仍然准时到达火车站。我每次拜访他，他都不在。Suggested answers:(1) she is addected to television。(2)we arrived at the station in spite of the storm。(3)Every time I call on him，he is out。Step 2 Warming upask the students to reread the passage and find out the sentences with the word it in them .for example:(1)it is a beautful day here and I am sitting under the big tree at the end of the garden。(2)it seems amazing that my age I am still fit enough to cycle 20 killometries in an afternoon。(3)your mother tells me that you started smoking some 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 3 Grammar learningask the students to study the following sentences and try to summarize the structure and usages of it 。1.the personal pronoun“it”和the impersonal pronoun“it”。(1)toms mother kept telling him that he should work harter but it did nt help。(2)Who is knocking at the door？Its me。(3)its about five kiometer from here to the railway station。(4)its getting colder and colder every day。2.“it”是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 pit that you didnt see such a good film。Step 4 Summing uptry to help the students draw the following conclusions。1.“it”is a very useful word and can be used in many ways。2.the personal pronoun“it”是substite something that is mentioned before。in some cerain situations，“it”是can stand for an unidentified person or a baby。3.the impersonal pronoun“it”是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 infinity，-ing form or a confinityStep 5 Grammar practiceask students to do the following exercises:1.rewrite 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 streessful 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 streess ful day。2.do the remaining exercise in exercise 2 in discvering useful structures on page 21。3.first ask students to do the exercises individually，And then let them discuss And check their answers with their partners，And finally givestep 6 getting more about the grammer1.用作正式主题的多种句型 it be形容词/名词(dif ficult/neceary/a rule/a duty)for/of sb。to do sth。 it be形容词/名词(dif ficult/neceary/a rule/a duty)that clause it be过去分词(said/reported/known) that clause it be形容词/名词(useless/no use/no good) doing it takessb。sometime to do sth。 it seems/appears that clause it seems/appears as if clause格式对象的特殊用法。有些及动词或短语不能添加宾语从句，这时必须用it作为形式对象，然后接受宾语从句。此用法经常用于like、dislike、hate、appreciate、depend on、see to等。例如：I hate it when people talk with their mouths full。you may depend on it that they will support you。ill apprecate it if you close the door for me。I like it in the autumn when the weather is clear and bright .3.it引起的几种混淆的时间句型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。导出/高度(its)time that wewent/should go to bed。注意：在Its (about/high) time that语句模式中，谓词动词必须使用假设法，必须立即使用动词的过去或“should动词原型”(should不能省略)。(2)it/this/that is the first/second time that s