牛津初中英语9B U1课件4.ppt

object clauses introduced by that,earth is becoming more and more crowded and polluted.,daniel thinks that earth is becoming more and more crowded and polluted.,the robot will do most of our work.,daniel thinks that the robot will do most of the work.,people will live on the planet mars by the year 2100.,daniel thinks that people will live on the planet mars by the year 2100.,learning for use,hell be back in a month. (i hear) 2) i have been to the great wall once. (he tells me),i hear (that) he will be back in a month.,he tells me (that) he has been to the great wall once.,working out the rules,tips 1 that 引导陈述句。that 用在动词后。,2 用陈述句语序。,3 that可以省略。,practice joining the following sentences with that,1 people think humans on mars have to wear special boots to make themselves heavier.,people think (that) humans on mars have to wear special boots to make themselves heavier.,2 some scientists dont believe the journey to mars will be very comfortable.,some scientists dont believe (that) the journey to mars will be very comfortable.,writing an o for a sentence that has an object clause and an n for a sentence that does not p14,1 these plants will produce food and oxygen that we need. 2 scientists should be able to develop plants that grow on mars. 3 people humans on mars have to wear special boots to make themselves heavier.,think that,think that,we all mars is a planet in the solar system. the journey to mars could take only a very short time in space shuttles that travel at half the speed of light. 6 some scientists do not think the journey to mars will be very comfortable.,know that,object clauses introduced by if or whether,could the plants produce enough water?,daniel is not sure if/whether the plants could produce enough water.,are there any aliens on mars? are animals on mars dangerous?,daniel is not sure if/whether there are any aliens on mars.,daniel is not sure if/whether animals on mars are dangerous.,1 does he live in that house? ( she asks me) 2 have you finished your homework? ( i want to know),learning for use,she asks me if/whether he lives in that house.,i want to know if/whether you have finished your homework.,work out the rules,tips 1 we can use if or whether to introduce an object clause when it expresses a yes/ no question. if 或 whether 引导一般疑问句。 2 the word order in the object clause is just the same as that in the statement. 宾语从句要用陈述句语序。,is gravity a problem for the early settlers on mars? can you tell me_?,can you tell me if/whether gravity is a problem for the early settlers on mars?,practice （p15）,will transport on mars be much better than on earth? are you certain_?,are you certain if/whether transport on mars will be much better than on earth ?,3 does it take very long to travel from earth to mars? do you know _?,do you know if/whether it takes very long to travel from earth to mars?,4 are many people going to move to mars? can you tell me _?,can you tell me if/whether many people are going to move to mars?,did the usa send a space robot onto mars last year? do you know_?,do you know if/whether the usa sent a space robot onto mars last year?,选择疑问句只能用whether,are you a boy or a girl? could you tell me? could you tell me whether you are a boy or a girl?,exercise helping daniel complete the diary using that, if or whether p15,dear diary do you believe _ man will be able to live on the planet mars in the future? scientists are working hard to make this dream become true. however, they are still not sure _ we could grow plants on mars.,that,if/whether,also many scientists think _ gravity is a problem to the first settlers. they all agree _ the journey to mars will not be comfortable. therefore i am wondering _ there will be many people willing to move to mars.,that,that,if / whether,additional exercises,1 may i go surfing alone this afternoon? no, you _. it is dangerous. a may not b cant c neednt d dont 2 could i borrow your dictionary? yes, of course you _. a must b need c can d will,b,3 can you come to my house for supper? _. a no, you cant b i think so c sure, id love to d i hope i can,4 may i go now? no, you _. you have to stay at home. a neednt b mustnt c couldnt d dont,join the following sentences with object clauses introduced by that ,