2、太阳系,n.宇宙n.重力,地心引力n.氧气,n.气候, n.航天服,太空服n.风景;看法n.望远镜二。重点短语1.travel by spaceship2.in the future3.in order to4.on the radio5.take part in6.grow up7.prefer…to8.What’s worse9.be worth it10.at a distance of11.send sb a message乘宇宙飞船旅行将来为了通过收音机参加成长、长大喜欢……胜过……更为糟糕的是有好处,值得一干相隔给某人发送信
3、息三。重点句型1. I don’t think aliens can be found in space.我认为外星人不可能出现在太空里。(1)当think, believe, suppose, imagine, expect等动词后的宾语从句含有not的否定词时,该否定应移至主句,即否定主句的谓语动词。如:I don’t think it will rain tomorrow.我认为明天不会下雨。如果主句的主语是第二、三人称,否定式一般不转移。如:He supposes they won’t win the game.他猜想他们赢不了
4、比赛。(2)can +be +过去分词,是情态动词构成的被动语态。如:This can’t be done in a short time.这不是短期内能完成的。2. It has been two days since we landed on Mars.自从我们登上火星以来已经两天了。it用作主语谈论时间,常与since连用。如:It is(或has been) three years since we left school.自从我们离开学校以来已经三年了。3. What’s worse, our water supplies w
5、ere very low.更糟糕的是,我们的水供给是非常有限的。What’s worse更糟糕的是。类似结构还有:What’s more更有甚者;更为重要的是。4. It’s a quarter as big as the earth.它是地球的四分之一大。倍数表示法:倍数+as+形容词/副词+as如:This box is three times as heavy as that one.这只箱子是那只箱子的三倍重。5. Mars goes around the sun at a distance of about 228 milli
6、on kilometers.恒星在相隔大约228000000千米的地方绕着太阳转动。(1)at a distance of相隔(2)at a distance在远处。如:The moon goes around the earth at a distance of 380000km.月球在距地球38万千米的地方绕地球旋转。The police followed him at a distance.警察远远地跟着他。四。重点语法1、情态动词的被动语态:是由“情态动词+be+及物动词的过去分词”构成。如:Aliens can not be
7、seen on the earth.在地球上不可能见到外星人。Other planets may be visited soon in the future.将来其他的星球也会有人登陆。Scientific research should be done carefully.应该认真地进行科学研究。These trees must be watered in time.这些树应该及时浇水。书面表达技巧善于衔接。一篇好作文不仅是词汇、句子的简单罗列,语句间如缺乏必要的连接过渡和照应,作文就会结构简单,句式单调,缺少灵气,而看似不显眼的衔