《The Study of Living Things》Look into Science! PPT下載

第一部分內容：Think about it！

1.Would you like to be a biologist when you grow up? Why or why not?

2.What mysteries of nature do you know about?

Read the lesson and complete the table.

Fantastic facts about butterflies

The butterflies always_________to the same small piece of forest and________the winter there. 

·The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.

·The females________eggs on only one plant:milkweed. 

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The Study of Living ThingsPPT，第二部分內容：Main phrases:

·draw one’s attention

·as many as…

·leave for

·cut down

Main sentences:

·Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention.

·The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.

·When they begin to travel north in spring,the females lay eggs.

·Scientists still don’t understand how the butterflies know when to fly south.

·This is both puzzling and interesting for many scientists.

·There are many mysteries yet to be discovered by those interested in science.

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The Study of Living ThingsPPT，第三部分內容：教材解讀

1.Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention. 

◆have been doing sth.是現在完成進行時,意為“一直在做某事”,表示從過去某時開始的某個動作或狀態一直延續到現在,而且還在進行。常常表示動作的延續性、重復性以及感情色彩等。

◆draw one’s attention意為“吸引某人的注意力”。

2.Here,as many as 230 million butterflies spend the winter. 

◆as…as…意為“與……一樣……”,兩個as之間可加形容詞或副詞的原級;也可加“many+復數名詞”,“much+不可數名詞”或“形容詞+a/an+單數名詞”,還可以在as…as…前加twice,half等詞表示前后者倍數或分數關系。as…as的否定形式為not as/so…as…。

◆spend為及物動詞,意為“度過,花(錢/時間)”,常用于固定結構:spend time/money(in)doing sth.花費時間/金錢做某事;spend time/money on sth.在某物上花費時間/金錢;spend time with sb.和某人一起度過時光,句子的主語應為人,spend的過去式和過去分詞都是spent。

3.The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north. 

◆that return to the south和that left for the north都是定語從句。

◆leave for意為“動身去……”。leave意為“離開”,是位移動詞,可使用現在進行時表將來;leave與表示一段時間的狀語連用時,應改為be away(from)。

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The Study of Living ThingsPPT，第四部分內容：Practice

Join the sentences to make attributive clauses.

Example:

We did some experiments yesterday.The experiments were fantastic.

The experiments that we did yesterday were fantastic.

1.I asked him to mail the letter.I wrote the letter to my cousin.

2.Yesterday I met a boy.The boy is a new member in our art club.

3.Mary was carrying a bag.The bag cost her a lot of money.

4.Football is a team sport.Football is popular all over the world.

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The Study of Living ThingsPPT，第五部分內容：Homework

1.Finish off the exercises in the activity book.

2.Preview Lesson 29.

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