高一英語Unexplained Mysteries of the Natural World教案
good afternoon, and welcome to this week’s ① of mysteries of nature. today’s topic is a ② one--- it’s ③ , those strange creatures which ④ the earth for no less than two hundred million years, some of them were ⑤ eaters, others were like the infamous tyrannosaurus rex, carnivores who lived off meat and who ⑥ the more peaceful plant ⑦ dinosaurs. not all dinosaurs were big --- some were the ⑧ of chickens, and in fact the ⑨ things to dinosaurs living today are actually birds. but the ⑩ we are going to talk about today is why the dinosaurs suddenly __(11)__ exactly 66 million year ago, and to __(12)__ light on the subject we’ve invited one of the world’s foremost __(13)__ on the subject, from the pitt rivers museum in oxford, dr roger binfield.
suggested answers:
① edition ② big ③ dinosaurs ④ ruled ⑤ plant ⑥ attacked ⑦ eating
⑧ size ⑨ closest ⑩ mystery (11) disappeared (12) throw (13) experts
(3) listen to the second part and do activity 4 and 5 on page 56.
suggested answers to activity 4:
① a meteorite hit the earth. ② they stopped evolving. ③ they killed each other
④ a volcanic eruption ⑤ cancer caused by radiation
suggested answers to activity 5:
(4) listen to the second part again and do activity 6 on page 56.
suggested answers:
① f ② t ③ f ④ f ⑤t ⑥ f ⑦ f ⑧ t
3. post-listening
ask ss to work in pairs and discuss which theory they think is most likely and why.
step 4. pronunciation — consonants disappearing
purpose: to enable ss to know the words which consonants disappear.
1. pair work
show the sentences in the pronunciation activity 1 on the screen and ask ss to read them out.
(1) i’ll come straight to the point.
(2) the most widely accepted theory.
(3) i think it’s the most likely explanation.
2. individual work
ask ss to listen to the tape. let them pay attention to the elides. give them the right pronunciation.
suggested answers:
(1) straight to = / / (2) most widely=/ / (3) most likely=/ /