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

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

第一部分內(nèi)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(nèi)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(nèi)容：教材解讀

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

◆have been doing sth.是現(xiàn)在完成進(jìn)行時(shí),意為“一直在做某事”,表示從過去某時(shí)開始的某個(gè)動(dòng)作或狀態(tài)一直延續(xù)到現(xiàn)在,而且還在進(jìn)行。常常表示動(dòng)作的延續(xù)性、重復(fù)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(gè)as之間可加形容詞或副詞的原級;也可加“many+復(fù)數(shù)名詞”,“much+不可數(shù)名詞”或“形容詞+a/an+單數(shù)名詞”,還可以在as…as…前加twice,half等詞表示前后者倍數(shù)或分?jǐn)?shù)關(guān)系。as…as的否定形式為not as/so…as…。

◆spend為及物動(dòng)詞,意為“度過,花(錢/時(shí)間)”,常用于固定結(jié)構(gòu):spend time/money(in)doing sth.花費(fèi)時(shí)間/金錢做某事;spend time/money on sth.在某物上花費(fèi)時(shí)間/金錢;spend time with sb.和某人一起度過時(shí)光,句子的主語應(yīng)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(dòng)身去……”。leave意為“離開”,是位移動(dòng)詞,可使用現(xiàn)在進(jìn)行時(shí)表將來;leave與表示一段時(shí)間的狀語連用時(shí),應(yīng)改為be away(from)。

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The Study of Living ThingsPPT，第四部分內(nèi)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(nèi)容：Homework

1.Finish off the exercises in the activity book.

2.Preview Lesson 29.

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