中小学教育资源及组卷应用平台 Unit 7 必背知识点 重要短语： Ⅱ. 重点句式.： 1. The next morning, Tina mentioned it to her brother Tom. (mention sth. to sb.) 2. I’m sure something landed in the forest near the hills as I heard a loud noise last night. (because, since) 3. “It looks strange,” he said, as he looked at the word “EARTH”. (when) 4. They heard some voices speaking a strange language. (hear sb. /sth. doing) 5. The spaceship was damaged because of a crash. (because of + 名词) = The spaceship was damaged because there was a crash. (because + 句子) 6. The children ran away in fear. (in + 名词：处于…中) 7. It was tall, with a round head and a silver body. (with: having) 8. There was something written on the spaceship. 9. Since no one else saw these aliens, I refuse to believe you. (Because, As)（refuse to do sth.） 10. So do I. (So + 助动词/be + 代词表示某人也是) 11. No one knew what to do. III. 词形变化： 1. unknown adj. 未知的 -- v. know知道，懂 know – knew – known -- 反义词： famous 2．alien n. 外星人 -- adj. 外国的；陌生的 3．receive v. 收到 -- n. receiver 接收者-- n. receipt接受，收据 4．loud adj. 响亮的;大声的 adv. loud / loudly 5. explore v. 探索 -- n. explorer 探险者-- n. exploration 勘探；探索，探究 6. damage v. 毁坏；破坏 -- n. damage 损坏(不可数) 7. frightened adj. 惊吓的；害怕的 -- n. fright 惊吓-- v. frighten 使惊吓 -- adj. frightened 惊吓的(同义词)scared -- adj. frightening 令人害怕的 (同义词）scaring 8. discover v. 发现；找到；发觉 -- n . discoverer 发现者-- n. discovery发现 (可数) 9. terrible adj. 令人极不快的，可怕的 -- adv. terribly 可怕地 10. fear n. 害怕；惧怕 -- v. fear 害怕，惧怕 -- adj. fearful 恐惧的 -- adv. fearfully -- adj. fearless 无畏的 11. wonder v. 想知道；想弄明白 -- n. wonder奇迹 -- adj. wonderful 美妙的 12. spread—spread—spread 13. knife n. 刀 (复数) knives 14. explain v. 解释；说明 -- n. explanation 解释，说明 15. pleased adj. 愉快的-- v. please 使愉快 -- adj. pleasant / pleasing 令人愉快的 -- n. pleasure 愉快 IV. 解析： 1．unknown : (1). not known (2). not famous 2．receive： get 3．loud: loudly 4. keep quiet: not make any noise 5. damage: destroy 6. frightened: afraid, scared 7. terrible : not pleasant, horrible 8. in fear : feeling afraid , being afraid of 9. wonder: want to know 10. refuse: say no to 11. spread: open 12. mark: symbol 13. pleased: happy; glad 14. as soon as possible: as soon as sb. can 15. agree with: have the same opinions (ideas) with 16. disagree with : have different opinions (ideas) with Ⅴ. 语法： 一、原因状语从句。 1. because 表示的原因是必然的因果关系；语气最强；通常在主句之后，有时也在主句之后. 回答why提出的问题，只能用because回答. -- Why can’t I go -- Because you are too young. 2. since 引导的从句置于主句之前，表示已知的，显然的理由。“既然”较为正式，语气比because弱。Since you are free today, you had better help me with my English. 3. as 引导的原因状语从句时表示附带说明的“双方已知的原因”，语气比since弱，较为正式，位置灵活（常置于主句前）。As it is raining, you’d bet ... ...
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