高一英语 Unit19《Modern agriculture第四课时》精品教案 旧人教版第一册

1、The Fourth Period The use of itTeaching Aims:1.Review the different usages of “it”.2.Get the students to remember some useful sentence patterns.3.Get the students to do more exercises so that they can master the grammar item.Teaching Important Points:Master the different uses of “it”,esp,the emphati

2、c use and the use as a preparatory subject or a preparatory object.Teaching Difficult Point:How to master and use “it ” correctly.Teaching Methods:1.Review method to revise the common use of “it”.2.Inductive method to go through some sentence patterns with “it”.3.Practice to consolidate the use of “

3、it”.Teaching Aids:1.a projector and some slides2.a computer for multimedia useTeaching Procedures:step .Greetings and Revision(Teacher greets the whole class as usual and shows the screen.)T:So far we've learned several uses of “it”.Now please look at the screen.Discuss the sentences with your p

4、artner and tell what the word “it”in each sentence refers to and its function.Write your answers on a piece of paper and later I'll ask some students to say the answers.Discuss the following sentences and tell the function of “it”.1.It's difficult to remember all their names.2.It's very

5、quiet in the cafe.3.It rained for three days.4.He made it clear that he didn't want to speak to me.5.It was nice seeing you.6.It was on Tuesday that Mrs.Smith came.7.It's three miles from here to the nearest garage.8.A tall man stood up and shook hands.It was captain Lawrie.9.I hear you boug

6、ht a new bike.Can you show it to me?10.It was five o'clock when we got back home yesterday.11.It was dirty and wet below the ship where the slaves were kept.12.It was on this coast that lots of his people disappeared.13.It was most likely that one third of them had lost their lives.(After a few

7、minutes.)T:Are you ready?Ss:Yes.T:Who will give us the answers?One student,one sentence.Volunteers?SA:“It” is used as a formal subject in the first sentence.Its real subject is the infinitive“to remember all their names.”SB：2.“It”refers to present situation.SC:3.“It”refers to “weather”.SD:4.“It”is u

8、sed as a formal object.SE:5.“It” is used as a formal subject.SF:6.This sentence is an emphatic structure,emphasizing the adverbial of time.SG:7.“It” is used here as an impersonal pronoun,referring to distance.SH:8.“It”here is used to point out definitely a person.SI:9.“It”here is applied to a new bi

9、ke.SJ:10.“It”refers to time.SK:11.“It”is used as the subject,expressing state of things in general.SL:12.This sentence is also an emphatic construction,emphasizing adverbial of place “on this coast”.SM:13.The word “it”here is used as a formal subject.T:Quite right.As we all know,the word “it”can be

10、used as a personal pronoun.In this case,“it”is not generally applied to a person,but to a thing or an animal just mentioned,such as“Sentence 9”.Secondly,“it” is used as a subject in expressions of time,weather,distance,etc,such as,in Sentence 2,3,7,10,11.Thirdly,“it”can be used as a formal subject o

11、r object.(The real subject is an infinitive or gerundial phrase or a clause.)Such as,in sentences 1,4,5,13.Fourthly,in Sentence 8,“it”points to a person and is called the Demonstrative it.It can also be used in the emphatic structure,such as in sentence 6,12.Step .PracticeT:From the exercise we'

12、ve done just now,we can see that you are all familiar with the common use of“it”.Next,let's see some important sentence patterns.Now,I'll give you an exercise on the screen.(Show the screen.)Pair work or group work.Some of the patterns are perhaps not familiar to you.If so,look at the answer

13、s some minutes later and remember them.Complete the sentences,paying attention to the structures of them and the use of“it”.1._ (据报道)that dozens of children died in the accident.2._(真遗憾)that he can't swim at his age.3._(很可能)that they will beat us tonight.4._(看来)that he enjoys pop songs very much

14、.5._(还是一个问题)when we shall have our sports meet.6._(还不确定)whether he can attend this conference or not.7._(不要紧，没关系)whether we go together or separetely.8.It is up to you_(决定是否接受这项工作).9.It is important_(我们学英语).10.It is kind_(你帮助我).11.It took me five days_(解决这问题).12.It's no use_(与她争论).(Some minutes

15、later,teacher shows the answers on the screen to let the students check.)Suggested answers:1.It was reportedIt be+ p.p known,thought,told,believed,hoped)that clause.2.It's a pityIt+be+n.(an honour,a good thing,a fact,a surprise)+that clause.3.It is likelyIt be+ adj.(wonderful,ture,important,surp

16、rising,clear,)+that clause4.It seemsIt seem/appear/happen+that clause.5.It is still a questionIt be + n.+whether/when/where clause6.It is uncertainIt be + adj.(not decided,uncertain)+whether/when/how clause7.It doesn't matterIt doesn't matter(It's no wonder.It doesn't make too much d

17、ifference)+wh-/how clasue8.to decide whether to take the job or notIt's up to sb.to do sth.9.for us to learn EnglishIt be+ adj.(difficult,easy,hard,important)for sb.to do sth.10.of you to help meIt be+ adj.(kind,nice,brave,clever,stupid)+of sb.to do sth.11.to solve the problemIt took sb.+time +t

18、o do sth.12.arguing with herIt's no use/no good/useless doing sth.Step .PracticeT:(Teacher shows the screen.)There are some other useful sentence patterns for you.Please do the exercise on the screen.Have a discussion with your classmates.Complete the sentences:1._(已经有三年了)since his father passed

19、 away.2._(不久)the police arrived.3._(已经八点了)when we got home.4._(该)she wrote a letter to her boyfriend.5._(这是第一次)these Europeans have visited the Great Wall.6._(我们该)to go to school.T:(Some minutes later.)Have you fi-nished it?Now look at the screen.(Teacher shows the screen.)Please remember these sent

20、ence patterns.Suggested answers:1.It is/has been three years2.It was not long before3.It was already 8 o'clock4.It is high time that5.It is the first time that6.It is time for usUseful sentence patterns:1.It be+a period of time+since-clause.2.It be+a period of time+before-clause.3.It be+a defini

21、te time+when-clause.4.It be(high)time+that-clause.5.It be+the first(second,third) time+that-clause.6.It be+time for sb.to do sth.Step .TestT:Now let's have a quiz.Please look at the screen and do the exercise on it.Choose the right answers:1.Does_matter if he can't finish the job on time?A.t

22、hisB.thatC.heD.it2.It was not_she took off her dark glasses_I realized she was a famous film star.A.when;thatB.until;thatC.until;whenD.when;then3.Tom's mother kept telling him that he should work harder,but_didn't help.A.heB.whichC.sheD.it4._is a fact that English is being accepted as an int

23、ernational language.A.ThereB.ThisC.ThatD.It5.It was about 600 years ago_the first clock with a face and an hour hand was made.A.thatB.untilC.beforeD.when6.Was_that I saw last night at the concert?A.it youB.not youC.yourD.that yourself7._was in 1979_I graduated from the university.A.that;thatB.It;thatC.That;whenD.It;whenSuggested answers:1.D2.B3.D4.D5.A6.A7.BStep .Summary and HomeworkT:In this class,we've gone over the use of “it”.Can you remember it?Let's recall it together.“It” can be used as a personal pronoun(The Design o