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1.?He?looks?through?the?telescope.?
2.?Maybe?Brian?and?I?can?join?you?after?supper.?
3.?I?don’t?think?you?can?find?one?unless?you?have?a?bigger?telescope.
4.?Actually,?double?the?size?of?your?house.?
5.?Well,?it’s?worth?a?try,?even?if?I?don’t?find?a?planet.?
6.?The?Milky?Way?has?more?than?five?hundred?billion?stars.?
教学?难点?
unless?的用法.?
教法?Listen?,?ask?and?answer.?
学法?Listen?,?answer?and?write.
?教具?tape?slides?
板?书?设?计??
Lesson?27?
1.?He?looks?through?the?telescope.
2. Maybe Brian and I can join you after supper.
3. I don’t think you can find one unless you have a bigger telescope. 4. Actually, double the size of your house.
5. Well, it’s worth a try, even if I don’t find a planet. 6. The Milky Way has more than five hundred billion stars.
教??学??教??程
Step?1.Greetings.?
设计意图：让学生做好上课的准备。?
Step?2.?Watch the flash and think?about?it.?
1.??Do?you?know?any?of?the?planets?in?the?solar?system??
2.??What?would?you?like?to?look?at?with?a?telescope??
设计意图：与学生进行一个简短的对话，进入本课主题。?
Step?3.?Learn?the?new?words?in?this?lesson.?
telescope?n.?望远镜?
solar??adj.太阳的
?certainly?adv.当然
?unless?conj.除非?
double?n.?&?adj.?两倍&双倍的