1、 一、重点词汇：1.travel by spaceship 乘宇宙飞船旅行2.in the future 将来3.in order to 为了4.on the radio 通过收音机5.take part in 参加6.grow up 成长、长大7.preferto 喜欢胜过8.Whats worse 更为糟糕的是9.be worth it 有好处，值得一干10.at a distance of 相隔 11.send sb a message 给某人发送信息二、重点句型：1. I dont think aliens can be found in space.我认为外星人不可能出现在太空里。(
2、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 dont 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 wont win the game.他猜想他们赢不了比赛。(2)can +be +过去分词，是情态动词构成的被动语态。如：This cant be done in a short time.这不是短期内能完成的。2. It has been two
3、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. Whats worse, our water supplies were very low.更糟糕的是，我们的水供给是非常有限的。Whats worse 更糟糕的是。类似结构还有：Whats more 更有甚者；更为重要的是 。4. Its a quarter as big as the earth.它是地球的四分之一大
4、。倍数表示法：倍数+as+形容词/副词+as如：This box is three tim es 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 million 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
5、米的地方绕地球旋转。The police followed him at a distance.警察远远地跟着他。一、 日常交际用语:Sound great! What is it about?What fun! I cant wait.You think man can live in space one day?I Think so. I hope I can live there one day. 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 seen on the earth.在地球上不可能见到外星人。Ot
6、her 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。2、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，而看似不显眼的衔接过渡可大大增强作文的连贯性，逻辑性和可读性。常见的语篇衔接成分见下表：逻辑关系 语篇衔接成分时间关系 first(ly
7、),second(ly),then, finally, suddenly, immediately,after, until, the moment, while空间关系 in front of, across, above, nearby, at the back of, next to, on one sideon the other side对称关系 on one handon the other hand, for one thingfor another转折关系 but, however, yet, while, though, otherwise, rather than, no
8、matter what ,on the other hand因果关系 because of, thanks to, because, since, as, for this/that reason, as a result, so, therefore.条件关系 as long as, if, unless, if necessary增补关系 besides, in addition, not onlybut also, as well, whats more,whats worse举例 for example/instance, such as, like, namely, in other words评价 as far as I know, there is no doubt that, Im not sure that,Its certain that, as we know, Its known to all that,总结 in a word, next to, in short, in general, in all, to sum upGenerally speaking, therefore
