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《Lesson 2 Endangered Species》新课标PPT课件优质课下载
…
P1: … but we are a long way from …
P2: … Unfortunately, this is either
impossible or unsuitable .
P3: … merely a dream
Dragon’s tip: A title contains a lot of information.
Task III: Skimming (3’)
Find the topic sentence of each paragraph.
Not all the first sentences are topic sentences.
P1: We are a long way from being able to
clone extinct mammals
P2: It states reasons for being unsuitable
to clone dinosaurs
P3: The chance of cloning dinosaurs is merely
a dream
Dragon’s tip: A topic sentence summarizes
a paragraph.
Task IV: Scanning and reflecting ( 4’)
1. Why does the writer mention Jurassic Park?
2.Why shouldn’t you clone an extinct animal
unless there is enough diversity in the group?
3. Why is it wrong to clone an extinct animal
if it would live in a zoo?
4.Why does the writer emphasize(强调）
“ based on what we know now…?