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(共13張PPT)
lesson28：The Study of Living Things
冀教版九年級英語
Would you like to be a biologist when you grow up Why or why not
What mysteries of nature do you know about
1. Read the lesson and complete the table.
· The butterflies always __________ to the same small piece of forest and ______ the winter there.
· The butterflies that return to the south are great great grandchildren of the butterflies that left for the north.
· The females ____ eggs on only one plant: milkweed.
· How do the butterflies know when to fly south
· How do the great-great grandchildren of the
butterflies ____ the same forest
2. Join the sentences to make attributive clauses.
We did some experiments yesterday. The experiments were fantastic.
The experiments that we did yesterday were fantastic.
I asked him to mail the letter. I wrote the letter to my cousin.
I asked him to mail the letter which / that / 不填 I wrote to my cousin.
Yesterday I met a boy. The boy is a new member in our art club.
Yesterday I met a boy who / that is a new member in our art club.
1. Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention.
這種令人著迷的蝴蝶一直吸引著泰勒博士的注意。
have been doing是現在完成進行時，“一直在做某事”，表示過去某時開始的某個動作或狀態一直延續到現在，且還在進行。常表示動作的延續性、重復性及感彩等。
e.g. Mr. Smith has been living in London since 1995.
史密斯先生自從1995年以來一直住在倫敦。 （延續性）
Have you been meeting her recently
你最近常見到她嗎？（重復性）
Who’s been eating my apples
誰吃了我的蘋果？（感彩)
draw one’s attention“吸引某人注意力”。
e.g. He tries to draw our attention to the painting.
他試圖把我們的注意力吸引到這幅畫上
2. Here, as many as 230 million butterflies spend the winter.
在這里，多達兩億三千萬只蝴蝶在這里過冬。
as…as “和……一樣”，
表示同級比較。基本結構為as+ adj. / adv. + as。
e.g. English words can be as short as one letter.
英語單詞可以短到只有一個字母。
This film is as interesting as that one.
這部電影和那部電影一樣有趣。
Your pen writes as smoothly as time.
你的鋼筆書寫起來和我的一樣流暢。
其否定形式為not as / so + adj. + as。
e.g. This dictionary is not as / so useful as you think.
這本詞典不如你想象的有用。
注意：as … as 結構中，使用形容詞或副詞的原形。as … as 結構用于肯定句或否定句，so … as只用于否定句中。
3. The butterflies that return to the south are the great great grandchildren of the butterflies that left for the north.
這些飛回南方的蝴蝶是春天飛往北方蝴蝶的曾曾子孫。
that return to the south 和that left for the north都是定語 從句。
leave for “到，去；出發，前往”。
e.g. They will leave Beijing for Guangzhou tomorrow.
他們明天要離開北京去廣州。
They left for Shanghai yesterday.
他們昨天去上海了。
現在完成進行時表示動作從過去某一時間開始，一直延續到現在還未結束。現在完成進行時有時也可用來表示經常的、反復的動作。
(1) 結構：have / has + been + V-ing
(2) 與since或for引導的時間狀語連用；since后接動作開始的時間，for后面接一段時間；對since或for引導的時間狀語提問時要用how long 。
(3) 否定形式是在have / has后加not構成，可縮寫為haven’t / hasn’t
(4) 一般疑問句形式是將have / has提至主語前；肯定回答用“Yes, 主語+have / has.”，否定回答用“No, 主語 +haven’t / hasn’t.”
e.g. a. -How long have you been drawing
-I have been drawing for two hours.
b. -How long has Maria been playing the piano
-She has been playing the piano
since she was five years old.
Research and write a report about an animal or insect that you think is fantastic. Include a drawing or image of the animal or insect.

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