Unit 1 Life On Mars教案

t: now let’s learn the object clauses introduced by ‘if ‘or ‘whether’.
t: daniel has learned a lot about living on mars. but he’s still worrying about something . look at his worries. 
 1 ) could the plants produce enough water?
--- daniel is not sure if / whether the planets could produce enough water.
 2) are there any aliens on mars?  
----daniel is not sure if / whether there are any aliens on mars.
3)  are animals on mars dangerous?
--- daniel is not sure if / whether animals on mars dangerous.
t:  let’s do more practice together.   (ppt)
1 ) does he live in that house?             ( she asks me …)
--- she asks me if/ whether he lives in that house.
2)  have you finished your homework?     ( i want to know…)
----  i want to know if /whether you have finished your homework.
t:  can you work out the rules yourselves?    (ppt)
tips
1  we can use‘if’ or‘whether’to introduce an object clause when it expresses a ‘yes / no’question.(我們可以用‘if’ 或 ‘whether’引導一般疑問句。)
2  the word order in the object clause is just the same as that in the statement. (賓語從句應該用陳述語序。）        
t：boys and girls , please  look at some other exercises----put the two parts into the object clauses using ‘if’ or ‘whether’?   (ppt)
1 )will transport on mars be much better than on earth?
     are you certain________________________________?
2 ) is gravity a problem for the early settlers on mars?
    can you tell me________________________________?
3 ) does it take very long to travel from earth to mars?
    do you know __________________________________?
4) are many people going to move to mars?
    can you tell me _________________________________?
5 )did the usa send a space robot onto mars last year?
    do you know__________________________________?
keys:
1 are you certain if / whether transport on mars will be much better than on earth ?
2 can you tell me if / whether  gravity is a problem for the early settlers on mars
3 do you  know if / whether it takes very long to travel from earth to mars
4 can you tell me if / whether many people are going to move to mars
5 do you know if / whether the usa sent a space robot onto mars last year
t: now we’ve learned about the object clauses introduced by ‘that’ and the object clauses introduced by ‘if’ or ‘whether’. can you tell them apart if you are asked to use them in an article ?try to help daniel complete the diary using ‘ that’, ‘if ’ or ‘whether’    (ppt)