重點單詞
1. earth 地球,名詞。用的時候前面要加the。
2. moon 月亮；月球，名詞。用的時候前面要加the。
3. news 新聞；消息，名詞（不可數）。
4. reach 到達；抵達，動詞。後面直接加地點，reach there/ here/home/Beijing；get to到達，後面加地點名詞，如果地點是副詞，to省略，get to Dalian/get home/here/there；arrive後面接大地點用in，小地點用at，如果地點是副詞，in/at均省略，arrive in Beijing/arrive at my school/arrive there/here/home
5. yet 在還，尚(用於表示某事在某一時間尚未發生，但未來也許會發生),副詞。常用於現在完成時態的否定句、疑問句末尾。They haven’t finished their homework yet.
6. just 剛才；剛剛，副詞。常用於現在完成時態have/has和動詞過去分詞之間。She has just made some dumplings.
7. latest 最近的；最新的，形容詞。the latest news 最新消息
8. discover發現；找到，動詞。指發現原本存在的東西。Columbus discovered the American continent in 1492.
9. none 沒有一人；沒有一個；一點兒也沒有，（名詞性）代詞。表示對三者及以上的否定。反義詞all。常與of 連用，none of your business 不關你的事；和你無關。如果none of 後面加可數名詞複數形式作主語時，謂語動詞可以單數可以複數。None of the students in my class wants /want to have a picnic tomorrow.如果none of 後面加不可數名詞作主語時，謂語動詞單數。None of milk is for me.
10. group 群；組，名詞。in groups 以組為單位；in groups of four 四人一組。
11. light 光；光線；光亮；電燈，名詞。輕的；輕鬆的；少量的；淺色的；明亮的，形容詞。3
12. impossible(事情)辦不到的，不可能的，形容詞。possible 可能的。
13. communicate 聯繫；交流，動詞。communicate with...和......交流，和......溝通。communication 交流；溝通，名詞。
短語歸納
1. no problem 沒問題(用於表示樂於做某人要求做的事)
2. far away 遙遠的
3. in order to 為了；以便；目的在於，後加動詞原形
4. get information 得到信息；獲取信息
5. go online 上網
6. search for information 搜尋信息；查找資料
7. hundreds of millions of 億萬
8. go around 繞著/圍著......轉
9. solar system 星系；(尤指)太陽系
10. billions of 數以億計的
11. communicate with...和......交流，和......溝通
12. be named after...以......命名
M3U1重點句子
1.What are you up to? 你在幹什麼呢？be up to 正在做某事，忙於某事；從事於......（1）be up to (doing) sth.能勝任......I'm up to going to work today.我今天能上班。/He is up to this job.他能勝任這份工作。（2）be up to sb.是......的職責；由......決定This job is up to you. 這個工作是你的職責。
2.I haven't started yet because I'm not sure how to make it. 我還沒開始呢，因為我不確定怎麼做它。（1）I'm sure+句子,我相信/確定......（2）how to make it 怎麼樣做它，how是特殊疑問詞，後面可以接動詞不定式形式。
3.Sure, no problem. Have you heard the latest news?當然，沒問題。你曾聽說這個最新消息了嗎？（1）no problem 沒問題（2）the latest news 最新消息
4.Scientists have sent a spaceship to Mars.科學家已經發送一個宇宙飛船到火星。send sb./sth.to地點/do sth.......派/發送某物/某人去....../做某事 His father sent him to study in Beijing./The company sent him to Shanghai last week.
5.The journey has taken several months.這次旅行已花費好幾個月時間。（1）take 花費It takes/took/has taken+某人+時間+to do sth.花費某人多長時間去做某事 It took her three days to finish this work.（2）spend 花費，人 spend 錢/時間on sth./doing sth.人花費時間/錢做某事 She spent 50 yuan on/buying a book./He spent ten days reading a book.（3）pay 付款；付費，人pay for sth./人pay money for sth.人花錢買某物 The boy paid 20 yuan for a pen.
6.Has it arrived yet?Yes, it has arrived already.它已經到達了嗎？是，它已經到了。
（1）arrive 到達，接大地點用介詞in,接小地點用介詞at，如果後面沒有具體地點，到達只能選用arrive，不能用get/reach.We arrived the day before yesterday.（2）yet 還；尚,用於現在完成時態否定句或疑問句末尾。（3）already 已經,用於現在完成時態肯定句，常放在has/have與過去分詞之間或句尾，偶爾用於疑問句句尾表示驚訝語氣。Have they finished the work already?
7.That's why it's on the news.那就是它上新聞的原因。（1）That's why...那就是為什麼/那就是......的原因（2）be on the news 在新聞上，news不可數名詞
8.So have they discovered life on Mars? 那麼他們在火星上發現/找到生命了嗎？discover 發現/找到原本存在的東西。Columbus discovered America in 1492.
9.Astronauts have already been to the moon.宇航員已經到過月球。（1）have/has been to 曾經去過......（表示已經返回）（2）have/has been in 待在......She has been in Dalian for five years.（3）have/has gone to 去......（表示還沒返回）Where is Lucy？She has gone to the library to borrow books.
10....but no one has been to Mars yet, because Mars is very far away, much farther than the moon.但是還沒有人去過火星，因為火星很遠，比月球遠多了。（1）far away 很遠，遙遠（2）much可以修飾比較級，類似用法的詞還有a lot,a little,a bit, far, even,any...
11.Lots of scientists are working hard in order to send astronauts to Mars one day.許多科學家正在努力工作為了某一天派宇航員去火星。（1）lots of=a lot of=plenty of+名詞（可數或不可數）許多......（2）work hard 努力工作（3）in order to+動詞原形，為了......（4）send sb.to sp.派某人去......
12.How can I get information on space travel?我怎樣能得到關於太空旅行的信息呢？（1）get information 得到信息（2）on=about 關於（3）space travel 太空旅行
13.You can go online to search for information.I will.你可以上網搜尋信息。我會的。（1）go online 上網（2）search for information（3）will/won't 表示下決心。Don't smoke again，Tom. Sorry, I won't.
M3U2重點句子
1.Scientists think that there has been life on the earth for hundreds of millions of years.科學家們認為地球上有生命存在已經億萬年了。（1）There be 句型現在完成時態結構是There has/have been +名詞+介詞短語。（2）on the earth 在地球上（3）hundreds of millions of 億萬
2.However, we have not found life on any other planets yet.然而，我們卻沒有在其他任何星球上發現生命。（1）however 然而，後面常有逗號；（2）any other+名詞單數（表示同一範圍比較）He is taller than any other boy.(3)any other+名詞複數（表示不同範圍比較）She is better than any other boys.
3.The earth is a planet and it goes around the sun.地球是 一個行星，它繞著太陽轉。（1）go around 繞著（2）earth，sun都是世界上獨一無二的事物，前面要加the。
4.None of them has an environment like that of the earth, so scientists do not think they will find life on them.它們中沒有一顆行星有與地球一樣的環境，所以科學家們認為其他行星上都不會找到生命。（1）none沒有一人；沒有一個；一點兒也沒有，（名詞性）代詞。表示對三者及以上的否定。反義詞all。常與of 連用，none of your business 不關你的事；和你無關。如果none of 後面加可數名詞複數形式作主語時，謂語動詞可以單數可以複數。None of the students in my class wants /want to have a picnic tomorrow.如果none of 後面加不可數名詞作主語時，謂語動詞單數。None of milk is for me.(2)think 認為，常接賓語從句。We don’t think they will come to Dalian tomorrow.如果主句主語是I/we,並且主句是一般現在時態，從句的否定一般要轉移到主句上。believe,imagine也有類似用法。
5.There are billions of stars in the Galaxy...在星系中有數十億恆星。billions of 數十億
6.They are very far away and their light has to travel for many years to reach us.它們很遙遠，它們的光不得不經過很多年才到達我們（地球）。（1）far away 遙遠（2）reach 到達，直接接地點。They reached Shanghai two days ago.
7.Scientists have sent spaceships to the planet of Mars to take photos.科學家們已經發射宇宙飛船到火星上拍照片。（1）send sb./sth. to sp.發送某人/某物去......（2）to take photos拍照片，動詞不定式表示目的。
8.With so many stars in the universe, are we alone, or is there life out there in space? 宇宙中有這麼多恆星，我們是孤獨的還是在太空中地球之外有生命存在呢？（1）so many+可數名詞複數，那麼多/如此多......（2）in the universe 在宇宙中（3）in space 在太空中
9.Why has no one communicated with us? 為什麼還沒有人和我們聯繫呢？communicate with...和......溝通/交流
M3U3重點句子
1.Saturday is named after the planet Saturn.週六是以土星來命名的。be named after...以......命名
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