大學英語基礎教程(北大版)unit-1-恐龍滅絕(the-end-of-dinosaurs)(完整版)
【正文】 ? 聊天的潮流自 1990年代才開始流行。許多還沒有老鼠那么大 。否定答語常用 needn39。如： — Must I do the work now? 我必須現(xiàn)在干這個活嗎？ — Yes, you must /have ，你必須做。 — No, I don39。 ? 。t /don39。 /是的，你得回答。事實上，人類是幸運的。s. ? 這就使得大型魚類、鳥類還有像鱷魚和蜥蜴這樣的爬行動物在以后得到了發(fā)展。如今，科學家們確信小行星非常巨大，以至于它有可能阻擋了射向地球的太陽光，并引起了酸雨性的暴風雨和地震 。 *allow v. ? 1) let sb. do sth.。 too 也，還有 ? I am learning English as well as French now. ? 我現(xiàn)在正學習英語和法語。因此，它們有更為有利的生存機會。 depend on/upon sth. 依賴；取決于 Our success will depend on everyone’s effort. ? 我們的成功取決于每個人的努力。 so...that... 如此 ……以至于 …… ? She was so sick today that she couldn’ t go to work as usual. ? 她今天病得太厲害了，以至于無法像往常那樣去上班。 ? He agreed with them about the need for change. ? 他同意他們關于變化的需求。Teenagers39。ml] n. 哺乳動物 Main Idea ? The text is going to tell us that the end of dinosaurs was caused by an asteroid(小行星 ) hitting the earth many years ago, which destroyed the natural conditions the dinosaurs depended on. Text Structure Part I: The author gives us the introduction of the whole text —— why dinosaurs disappeared: by asking several questions. Part II: The author agrees with the theory that the end of dinosaurs was caused by an asteroid hitting the earth and provides all kinds of evidences to support his opinion. Part III: The author concludes that the end of dinosaurs led to humans39。 all the time ? 7. experience (v.) 經(jīng)歷 ? 同根詞： experience (n.)。s?] n. 恐龍 Some questions for you to think ? On seeing this title, what do you think the text is going to tell us? ? What’s the reasons for such a huge animal disappear from the earth? ? Did people and dinosaur live at the same time? ? The text is going to tell us that the end of dinosaurs was caused by an asteroid(小行星 ) hitting the earth many years ago, which destroyed the natural conditions the dinosaurs depended on. Dinosaur n. 恐龍 Dinosaur ? Dinosaur— the mon name was given to a group of reptiles(爬行動物 ), often very large, that first appeared in the Late Triassic Period(三疊紀時代 ) about 215 million years ago and thrived worldwide for some 150 million years. Most died out by the end of the Cretaceous Period(白堊紀時代 ), about 65 million years ago. ? If all of Earth time from the very beginning of the dinosaurs to today were pressed into 365 days, the dinosaurs appeared January 1 and became extinct the third week of September. By parison, people have been on earth only since Dece
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