基础知识：、短语1.believe in 相信、信任 2.thousands of成千上万的3.wake up 醒来 4.keep quiet保持安静5.because of因为 6.in fear 恐慌地、害怕地7.landing site降落地点 8.as soon as possible尽快9.agree with 同意、赞成 10.disagree with不同意11.look out of 向.外看 12.next to 紧挨着13.run away 逃跑 14.call the police报警15.at midnight 在半夜 16.no one没人17.know about 了解 18.in the future在将来19.mother ship母舰 20.talk to和.交谈21.look like 看起来像 22.a piece of paper 一张纸23.come from 来自 24.have a good idea 有一个好主意25.on the side of the hill山的一边 26.write down 写下、记下27.from.to.从.到 28.talk about 谈论句型1.be sure to do sth 确信做某事2.Lets do sth 咱们做某事吧3.refuse to do sth 拒绝做某事4.hear sb doing sth 听见某人正在做某事5.tell sb about sth 告诉某人某事6.what to do（特殊疑问词+动词不定式）要做什么7.keep+adj 保持8.try to do sth 尽力做某事9.become(变化类系动词)+adj 变得.10.sth happens to sb 某人发生了某事11.as.as possible 尽可能.12.tell sb (not) to do sth 告诉某人（不要）做某事13.try doing sth 尝试做某事语法：原因状语从句和because of的用法(1). Since no one else saw these aliens, I refuse to believe you.(2). We went there because I heard a loud noise last night.(3). Im unhappy because of your marks in the exam!句子（1）中含有since引导的原因状语从句，句子（2）中含有because引导的原因状语从句，句子（3）中含有because of短语。1.because,as,since这几个词都表示“因为”，语气由强到弱依次是becausesinceas，这几个词都是从属连词。(1)because表示直接原因，它所指的原因通常是听话人所不知道的，其语气最强。常用来回答 why所提出的问句，一般放在主句之后，也可以单独使用。 I stayed at home because it was raining.(2)since侧重主句，从句表示仙人的或已为人所知的理由，常常翻译为“既然”，语气比because 稍弱，通常位于句首。 Since every is here, lets start.(3)as是常用词，它表示的是双方已知的事实或者显而易见的原因。含义与since相同，但语 气更弱，没有since正式，常翻译为“由于、鉴于”，从句说明原因，主句说明结果，主从 并重。 We all like her as she is kind.2.because of是介词短语，其后可接名词、代词或者动名词以及由关系代词引导的从句。 He lost his job because of his age.语法专练1. Tony never spends money buying books _ he doesnt like reading. A.but B.because C.though D.until2.-Why do you like English? -it is very interesting. A. Though B. Because C. Because of D. But3. We cant go camping _ the bead weather.A.because B.so C.because of D.although 4._ She/she didnt go to see her father _ she was very busy yesterday.A. Because;so B. So;because C. /;so D./;because5._ everyone is here, lets start to have a meeting.A. Because of B. Since C. But D. Or 6. He couldnt catch the early bus _ he got up late.A.so B.because C.because of D.but课后练习1、 根据句意及汉语提示完成单词。1. I w_ what you are. Can you tell me?2. Im p_to see my best friend.3. There are two _ (刀) and three forks on the desk.4. I cant believe the story is _.(真实的)5. Can you _(解释)why you are late for school.二、用所给单词的适当形式填空。6. Im sure _ (pass) the exam.7. Listen! Can you hear the girl _ (sing) in the next room.8. He runs as _ (fast) as me.9. The bank is _ (open) from 9 a.m. To 4 p.m.10. Our teacher tells us _ (not swim) in the river.三、单项选择11. My brother read a book _ The Lion King. A.call B.name C.called D.is named12. I have _ to tell you. A.anything important B.important anything C.something important D.important something13. The girl _ some flowers from her boyfriend yesterday. A.receives B.received C.accept D.accepted14. We planted _ trees last year. A.two thousand B.two thousands C.two thousands of D.thousand of15. The man refused _ my questions. A.answer B.answered C.answering D.to answer16. -Must I start now? -No, you_. A.mustnt B.cant C.neednt D.shouldnt17. _ do you want to say? A. Else what B. What else C. Other what D. What other18. I think we should protect the animals. Do you agree _ me? A.on B.to C.with D.for19. His father likes keeping dogs and _. A.so is his mother B.so his mother does C.so does his mother.20.-What do you think of the film? - _. We all like it. A. Enjoy yourself. B. Many thanks. C. Pretty good D. Its hard to say四、完形填空Many people today like reading stories about UFOs. Many people in different countries are 21 UFOs. But what are UFOs? There are some different ideas about UFOs. Among them, the most 22 one is that UFOs carried visitors coming from other stars.They 23 to fly much faster than planes on the earth. Some UFO scientists and many other people 24 this idea. Some people said that they saw a few UFOs land on the earth; 25 people said they saw some strange visitors come out of the UFOs. Some 26 said they were carr