3. (给出本话题中的功能意念句或其他重点句型，两人一组进行游戏。让一个学生说出一个句子的前一部分，另一个学生必须快速说出整个句子，然后交换角色。统计说完所有句子的时间，时间最短的为优胜者。完成2b。)
t: boys and girls, let’s play a game. i will give you some important sentences of this topic on the blackboard. you play the game in pairs. one says the front part of a sentence, the other says the whole sentence as quickly as possible. then exchange the roles. just like this:
a: i wish…
b: i wish i could go into space some day.
are you clear?
ss: yes.
t: the pair that finishes in the shortest time is the winner. ok, begin!
(1) i wish i could go into space some day.
(2) i hope your dream will come true.
(3) there is dna in most living things, including human beings.
(4) no one knows for certain, but most people think that robots will be part of our lives.
(5) in short, this robot is very useful to us.
step 5 project 第五步 综合探究活动(时间:4分钟)
学生小组合作，设计一个新发明，并画出来，完成3。培养学生合作与探究的精神。
1. t: look at kangkang’s invention and the information. what’s the name of his invention?
ss: plar.
t: what’s it used for?
ss: it’s used for both flying and driving.
t: good! do you want to be an inventor?
ss: yes.
t: ok! discuss in groups and design your own invention. you’d better draw a picture of it and write down the information about it. are you ready?
ss: yes.
t: ok, start please.
(学生小组合作。完成后，选几名学生谈论他们的新发明。)
2. homework:
search the internet for more technologies and inventions. share them with your classmates.
板书设计：
when was it invented?
section d
run away
gps: the global positioning system
this method worked well at night as long as the weather was good and the stars could be seen.
topic 3 i don’t think aliens can be found in space.
section a
the main activities are 1a and 2a. 本课重点活动是1a和2a。
ⅰ. teaching aims and demands 教学目标
1. learn a new word:
research
2. learn some useful sentences:
(1) what fun!
(2) i won’t believe there are aliens until i see them with my own eyes.
3. learn the use of modal verb+be+p.p.:
(1) we will be able to do anything that can be done on the earth.
(2) but i don’t think aliens can be found in space.
4. talk about flying to mars, the outer space and something about the aliens.
5. learn expressing possibility and impossibility.
ⅱ. teaching aids 教具
关键词卡片/图片/录音机/小黑板
ⅲ. five-finger teaching plan 五指教学方案
step 1 review 第一步 复习(时间:8分钟)