1、astronomer1 Do you know which one is not a mammal哺乳動(dòng)物哺乳動(dòng)物?koala2 Snakes and tortoises belong to _,while frogs and toads belong to_. A amphibians 兩棲動(dòng)物兩棲動(dòng)物 B reptiles爬行動(dòng)物爬行動(dòng)物 ?3 How Life Began on the Earth：Which came first ?How Life Began on the EarthReading.mp3Reading Comprehension ISkimmingWhats the

2、 main idea of the text? A brief introduction on how human beings were born. B. A brief introduction on the birth of the universe and life on the earth. C. The “Big Bang” had a great effect on the birth of the earth. D. The appearance of human beings was a disaster to the earth. Paragraph 1:Paragraph

3、 2:Paragraph 3:Paragraph 4:Paragraph 5:A widely accepted theory about the formation of the universe The formation of the earth The importance of water for life The development of plants and animals on the earth The arrival of humans and their impact on the earthMatch the main idea of each paragraph.

4、Fast reading Detailed ReadingHow life began on the earthHow life began on the earthTrue or false 1. According to a widely accepted theory, the universe a “Big Bang”, after which the earth was still for several billionyears. 2. As the earth cooled down, water began to appear on its surface. 3. Water

5、harmful gases and acids ,and it only appeared on the earth. 4. As for mammals , they produced young generally by laying eggs. 5. Clever animals with hands and feet, are protecting the earth well instead of other less important animals.Stage 1: The development of the earth(1) After the Big Bang, what

6、 happened? a cloud of dust a violent solid ball 1. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.隨后它會(huì)變成什么沒人知道，知道38-45億年前這團(tuán)塵埃才慢慢地形成一個(gè)固體的球狀體。句中句中“What it was to become ” 是一個(gè)是一個(gè)主語從句，在句中充當(dāng)主語，謂語動(dòng)詞用主語從句，在句中充當(dāng)主語，謂語動(dòng)詞用單數(shù)。單數(shù)。（was to b

7、ecome ） be to do :注定要，注定要，必定會(huì)必定會(huì)2. The earth became so violent that it was not clear whether the shape would last or not. violent: a. 暴力的暴力的,激烈的激烈的 詞形變化詞形變化:副詞副詞:violently a. She was in violent temper. 她暴跳如雷。她暴跳如雷。 主語從句，主語從句，it為形式主語，為形式主語，whether引到真正引到真正的主語。（注：有的主語。（注：有or not時(shí)，只能用時(shí)，只能用whether不用不用if）

8、 exploded with fire and rock produced water vapour and gases(2) What happened next?3.They were in time to produce carbon in time:及時(shí)，終于及時(shí)，終于 in time (for sth/ to do sth)= not lateThe car came to a halt just in time to prevent an accident. 汽車及時(shí)停下，避免了一場(chǎng)車禍。汽車及時(shí)停下，避免了一場(chǎng)車禍。b. Can we get to the station in

9、time? 我們能及時(shí)到達(dá)車站嗎？我們能及時(shí)到達(dá)車站嗎？Water appeared which is important for the beginning of life on the earth. (3) What appeared on the earth then?cool 1) v. Please open the window to cool the room. 2) adj. 涼爽的，冷靜的，沉著的，冷漠的，冷淡的涼爽的，冷靜的，沉著的，冷漠的，冷淡的 be/get/seem/keep cool His songs received a cool response from t

10、he public.4. As the earth cooled down, water began to appear on its surface. 隨著地球的冷卻隨著地球的冷卻, 地球的表面就開始出現(xiàn)了水。地球的表面就開始出現(xiàn)了水。cool downa.涼快起來，冷卻涼快起來，冷卻b.指人的心境指人的心境“平靜下來，使平靜下來，使平靜下來平靜下來” Dont cover the TV until it cools down. I tried to cool her down but she was still very angry when she left. (5) What did

11、the water do?It allowed the earth to dissolve harmful gases and acids into the oceans and seas.1. Big Bang (threw matter in all directions)2. a cloud of dust3. a solid globe4. exploded with fire and rock5. produce the carbon, nitrogen, water vapour, How did the earth come into being?6. cooled down7.

12、 water appeared8. harmful gases were dissolvedThe development of lifeThe development of lifeextremely small plants What life developed after water appeared?Stage 2: The development of life in water green plants on land(2) What life developed after the life in water?insects on landamphibians on land

13、as well as in the wateras well as 還，（除還，（除之外）之外）也可連接兩個(gè)并列的謂語，其時(shí)態(tài)要保持一可連接兩個(gè)并列的謂語，其時(shí)態(tài)要保持一致。致。 He sings as well as dances.可連接兩個(gè)不定式，但后一個(gè)動(dòng)詞的不定可連接兩個(gè)不定式，但后一個(gè)動(dòng)詞的不定式符號(hào)式符號(hào)“to”要省略要省略 My mum doesnt allow me to play computer games as well as watch TV.3. 在連接兩個(gè)并列主語時(shí)，謂語動(dòng)詞要與前一個(gè)保持在連接兩個(gè)并列主語時(shí)，謂語動(dòng)詞要與前一個(gè)保持一致。一致。 He as well

14、 as I is playing football.用于否定句中連接兩個(gè)主語時(shí)，若位于用于否定句中連接兩個(gè)主語時(shí)，若位于not前，兩前，兩個(gè)都否定，若位于個(gè)都否定，若位于not后，則否定前者，肯定后者。后，則否定前者，肯定后者。 Tom as well as Mark is not playing football now. Tom is not playing football as well as Mark now . Tom 和和Mark 現(xiàn)在沒在踢球?，F(xiàn)在沒在踢球。 Tom 現(xiàn)在沒有和現(xiàn)在沒有和Mark踢球。（踢球。（ Mark正在踢球）正在踢球）forestsStage 3: The development of life on land(1) What life developed next on land? reptiles on land dinosaurs on land(2) What life developed after forests appeared?mammals on land(3) What life developed after dinosaurs? small clever animals(4) What life develop