Unit 20   Archaeology教案

(teacher shows the following on the screen.)complete the sentences,paying attention to the use of “it”.1.______(據說)that this book has been translated into many different languages.2.______(很可能)that your team will win.3.______（很遺憾）that he can’t pass the english test.4.it is important ______（我們學好英語）.5.______(直到250年后)that they formed a single state.6.______(是1990年)that i graduated from the university.t:you all did a good job.please look at the fifth and the sixth sentence on the screen again.tell me the use of “it” in the two sentences.any volunteer?s1:here “it” is used for emphasis.t:you’re right.the two sentences are emphatic construction,emphasizing adverbials of time“not until 250 years later”and “in 1990”.the emphatic construction is:it is/was…that/who…this structure can be used to emphasize almost any part of the sentence.(bb:it is/was…that/who…)can you give another example?s2:it was in the street that i saw li ping yesterday.t:very good.if we emphasize the subject,the object or the adverbial of time,how should we rewrite your sentence?who can try?s3:if we emphasize the subject of the sentence,we should say “it was i who saw li ping in the street yesterday”.the sentence “it was li ping that i saw in the street yesterday.”is used to emphasize the object.if emphasizing the adverbial of time,we should say “it was yesterday that i saw li ping in the street”.am i right?t:yes,you’re quite right.step ⅲ  readingt:ok.so much for revision.china is a country with a long history.it has brilliant culture of about 5 000 years.do you know roots of chinese culture?ss:we don’t know.t:now,let’s read a passage about roots of chinese culture.first,let’s deal with the new words appearing in the text together.(teacher deals with the new words with the whole class.)t:ok.open your books at page 78.please read the passage quickly and answer the questions on the screen.(teacher shows the following on the screen.)1.why did jinsha village became famous all over china in ?2.how did sanxingdui first discovered? (a few minutes later,teacher checks the answers.)t:who’d like to answer the first question?s4:because archaeologists discovered more than a thousand cultural relics,including gold,jade,bronze and stone objects as well as nearly a ton of ivory.these will serve as the important materials for the study of local geography,climate and environment in ancient times.t:anything else?s5:because many of the relics there look very much like those found at sanxingdui.archaeologists now think that the jinsha ruins may have been the political and cultural centre of the ancient shu kingdom,which moved from sanxingdui to chengdu about 3 000 years ago.