典范英语1B-Lesson18 ppt课件

• It was a ___b__u_t_te__rf_l_y.
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butterfly life cycle
caterpillar
chrysalis
egg(s)
butterfly
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Draw pictures and tell a story.
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Homework
Here’s the scientific explanation: In most cases a butterfly does come from a chrysalis, but not
all. There’s a rare genus called Parnassian, that pupates in a cocoon. These butterflies live in the
Pacific Northwest, in Siberia, and as far away as North Korea and the northern islands of Japan.
And here’s my unscientific explanation: My caterpillar is very unusual. As you know caterpillars don’t eat lollipops and ice cream, so you won’ptpft课in件d my caterpillar in any field guides. But a2l5so,
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Kipper had a caterpillar.
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Kipper put the caterpiplptl课a件r in a box.
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He put leaves in the box.
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Then it was not a caterpillar.
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Let's retell.
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• Kipper had a __c_a_t_e_r_p_i_l_la_r.
• Kipper put the ___c_a_t_e_r_p_i_ll_airn the _____b_o__x.
• He put __le__a_v_e_sin the ___b__o.x
It was a chryspapt课li件s.
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But it was not a chrysalis.
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It was a butptpte课件rfly.
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a caterpillar
a chrysalis
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a butterfly
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Reading Dramatically
1b Lesson 18
The Caterpillar
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What is this? It is a caterpillar.
Do you like it? Yes/No ...
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What are these? They are butterflies.
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Let's listen to the story.
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What did you hear? I heard …
How did the caterpillar turn into a butterfly?
It turned into a chrysalis, and then the
butterfly.
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Let's listen and read.
• Then it was not a ____c_a_t_e_r_p_il_l.ar

• It was a ___c_h__ry__s_a_li_s.
• “Can we see the ___c_h__ry_s_a__li_s?”
But it was not a ______c_h_r_y_s.alis
Listen to the story and read it skillfully and dramatically.
How does a caterpillar become a butterfly? Draw pictures and tell a story.
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It is a chrysalis.
It is a cocoon.
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silkwo22rm
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cocoon – a pupa covered with silk or silky envelop
That’s a good question.
chrysalis – a pupa covered with a hard, chitnous shell