2019-2020年高一英语 Unit19Modern agriculture第四课时精品教案 旧人教版第一册Teaching 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 emphatic 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 mon use of “it”.2.Inductive method to go through some sentence patterns with “it”.3.Practice to consolidate the use of “it”.Teaching Aids:1.a projector and some slides2.a puter for multimedia useTeaching Procedures:step .Greetings and Revision(Teacher greets the whole class as usual and shows the screen.)T:So far weve learned several uses of “it”.Now please look at the screen.Discuss the sentences with your partner and tell what the word “it”in each sentence refers to and its function.Write your answers on a piece of paper and later Ill ask some students to say the answers.Discuss the following sentences and tell the function of “it”.1.Its difficult to remember all their names.2.Its very quiet in the cafe.3.It rained for three days.4.He made it clear that he didnt want to speak to me.5.It was nice seeing you.6.It was on Tuesday that Mrs.Smith came.7.Its 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 bought a new bike.Can you show it to me?10.It was five oclock 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 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 used 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 bike.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 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 or 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 weve done just now,we can see that you are all familiar with the mon use of“it”.Next,lets see some important sentence patterns.Now,Ill 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 answers some minutes later and remember them.plete 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 cant swim at his age.3._(很可能)that they will beat us tonight.4._(看来)that he enjoys pop songs very much.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.Its no use_(与她争论).(Some minutes 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.Its a pityIt+be+n.(an honour,a good thing,a fact,a surprise)+that clause.3.It is likelyIt be+ adj.(wonderful,ture,important,surprising,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 doesnt matterIt doesnt matter(Its no wond