2017-2018学年外研版八年级英语下册课件：Module 3 Unit 3 (共43张PPT).ppt

1、1._ a model spaceship.我刚刚做了个宇宙飞船模型。2.Has it _?它已经到达了吗？3.Astronauts _ the moon.宇航员已经去过月球了。4.We have not found life on any other planets _.我们还没有在其他星球发现生命。Ive just madearrived yethave already been toyet现在完成时(2)当表示动作已经完成，并对现在有一定影响时，我们一般用现在完成时。同时，可分用just,already或yet加以强调或说明。例如：I have just heard the news.我

2、刚听到消息。Astronauts have already been to the moon.宇航员已经去过月球了。He has just started to explore other planets.我们才刚刚开始探索其他行星。可以看出，just用来表示“刚刚”，already用来表示“已经”，两者都用于肯定句中，一般是置于have/has之后。在否定句中则可用yet,表示“还未”，有“以后可以会”的含义。例如：The scientists have not heard from it yet.科学家还没有收到它发出的信息。Man has not discovered any life

3、in space yet.人类尚未在太空中发现生命。现在完成时与一般过去时的区别：现在完成时在表达经历时只表示该事件是在现在之前的某一个时间里发生的，重点在于已完成动作对现在的影响。而一般过去时则表示在过去某一具体时间发生的事情。例如：I have just been to London.I went there last month.我刚去过伦敦，上个月去的。I have already finished my homework.I finished it an hour ago.我已经完成作业了，一小时前完成的。在没有明确的过去时间状语时，如何判断该用现在完成时还是该用过去时呢？判断的标准

4、是看该行为是否对现在有影响，也就是说该句强调的是什么。试看以下对话：A:Where have you put my book?I cant find it.你把我的书放哪儿去了？我找不 到。B:I put it on your desk yesterday.我昨天放你桌子上了。该对话中，当A问对方把自己的书放在何处时，A 感兴趣的是现在的状态，因此用现在完成时。B回答时只是说明当时放的位置，所以用一般过去时。A:Would you like to go and see the film with me tonight?你今晚想和我去看电影吗？B:Sorry,I have seen it alr

5、eady.不好意思，我已经看过那部电影了。对话中的现在完成时表示对结果的强调：“电影看过了，所以不想再看了。”现在完成时的句子中，already(已经)、just(刚刚)常用于肯定句，放在have has的后面。yet(还、尚、仍然)常用于否定句和疑问句,（放在have has的后面，也可放在句末）。Spaceship on Mars!Astronauts have(1)_ been to the moon but they have not been to any other planets.However,a spaceship(2)_ arrived on Mars and it has

6、(3)_ sent back photos of the red planet.Is there life on Mars?We do not know(4)_.alreadyjustalreadyyet Complete the news with already,justand yet.1have/has been to表示某人“去过某地，现在已经回来了”。have/has gone to表示某人“去某地了”，这个人已经不在这里了。have/has been to&have/has gone toThe spaceship has gone to Mars.It has gone ther

7、e,but it has not come back yet.Astronauts have been to the moon.They went there and then they came back.Look at these sentences.21.Astronauts have been/gone to the moon and returned.2.The spaceship has been/gone into space.It will travel for ten days.3.The astronaut has been/gone to the space statio

8、n.He will come back tomorrow.Now choose the correct answer.4.The spaceship has been/gone to the space station.It brought back two astronauts.Complete the sentences with the expressions in the box.have/has been have/has gone1.A spaceship _ to Mars.It is coming back to the earth next year.has gone32.L

9、ots of astronauts _ to the space station.They found it very interesting.3.Some astronauts _ to the moon twice.4.Two British astronauts _ to the space station.They will come back in January.have beenhave beenhave gone have/has been have/has goneNicky:Ive just(1)_(watch)a great TV programme about spac

10、e.Did you know that scientists have(2)_ (discover)water on Mars?Bill:Yes,I did.And scientists(3)_(try)to find life on Mars now.watcheddiscoveredare tryingComplete the conversation with the correct form of the verbs in brackets.4Nicky:Yes,theyre looking for life but they(4)_(not find)anything yet.Bil

11、l:There were some new photos of Mars in the newspaper today.(5)_ you _(see)them yet?Nicky:Yes.Theyre amazing!havent foundHave seen Roleplay the conversation in Activity 4.5Complete the email with the words in the box.been just met never read written yetFROM:Liu DanTO:Li FangSUBJECT:Ive found a great

12、 book.6Dear Li Fang,Ive(1)_ finished reading a great book at school.I havent(2)_ anything as good as that for a long time!Its a story about the solar system.In the book,the writer imagines that astronauts have(3)_ to Mars.Ive(4)_ thought about that before and I think its very interesting.justreadbee

13、nnever I havent(5)_ anyone famous in my life but I hope one day I can meet an astronaut.Ive(6)_ to a Chinese astronaut for more information about space and his experience of space travel.I hope he will write back.He hasnt(7)_.Maybe he is too busy.Im still waiting.Best wishes,Liu Danmetwrittenyet Lis

14、ten and complete the notes.1.The astronaut joined CNSA _ years ago.2.He has flown in a spaceship _ times.3.He felt _ when he was in the spaceship.six twoexcited74.He has been to the space station _.5.The earth was blue and very _ when he saw it from the space station.6.He decided to be an astronaut

15、because he has always been _ in space.twice beautiful interestedComplete the word map with the words and expressions in the box.astronaut Mars spaceship space station the earth the moon the sun8SPACE space travel solar system astronaut Mars spaceship space station the earth the moon the sun _Now add

16、 more words about space to the word map and write five sentences.Weve just read a story about a space station near the sun.Astronauts havent been to the sun,because its too hot._Spaceships are travelling in our solar system at the moment.I am interested in space and the stars and planets in our gala

17、xy.I think scientists will send astronauts to Mars one day.Complete the passage with the correct form of the words in the box.astronaut discover moon news reach spaceship yet In July 1969,Neil Armstrong became the first(1)_ to walk on the(2)_.People all around the world watched their televisions and

18、 waited for the(3)_ to(4)_ the earth.astronautmoon newsreach9We have now(5)_ a lot more about our solar system,and we have sent(6)_ to Mars,but no one has walked on that planet(7)_.But I believe one day someone will!discoveredspaceshipsyet astronaut discover moon news reach spaceship yetNames of the

19、 days of the week Many European languages use the names of the heavenly bodies for the days of the week.For example,in English,Saturday is named after the planet Saturn,the sixth planet from the sun.Sunday is the day of the sun,a traditional day of rest.Monday gets its name from the moonand is the d

20、ay of the moon.Sunday（星期日）：这是一周中的第一天。太阳（sun）在北欧人的心目中是极其神圣的。为了表示对太阳的敬仰，人们把每周的第一天命名为Sunday。Monday（星期一）：这是一周中的第二天。为了表达对月亮（moon）的敬仰，人们把这一天称作moon day，后来演变为Monday。英语星期的表达来历Tuesday（星期二）：这是一周中的第三天。北欧神话里有一个战神叫做Tyr，他机智勇敢，守护人类的平安。为了纪念他，英语中就以他的名字命名为星期二。Wednesday（星期三）：是以北欧神话中的主神Woden的名字命名的。Woden是北欧神话中掌管文化、艺术、战争等的最高神。Thursday（星期四）：是以北欧神话中的雷神Thor的名字命名的。Thor是北欧神话中最强大、最勇敢的神，是雷电之神。Friday（星期五）：是以爱神的名字命名的。北欧神话中的爱神、婚姻女神叫做Frigga，相当于罗马神话中的“维纳斯”。Saturday（星期六）：这是一周中的第七天。它是以罗马的农神Saturn的名字命名的。因此是“农神日”，是唯一保留罗马名称的一天。Finish the module task on page 25.