初中英语Unit 8 Our Blue Planet精品教学课件ppt

这是一份初中英语Unit 8 Our Blue Planet精品教学课件ppt，共4页。PPT课件主要包含了390 ，hundred，thousand，million，billion，Save，Drink，Mind，make，throw等内容，欢迎下载使用。
crrectly read and write large numbers and master the cmma - separatin rule;understand and use the affirmative and negative frms f imperative sentences t give envirnmental prtectin instructins;describe gegraphical phenmena thrugh actual data t enhance scientific literacy.
Learning bjectives
Watch a vide.
Ocean Whiz Quiz.
Hw lng is the bdy length f an average adult dlphin?
A. 2 - 4 meters
B. 20 – 40 meters
2.Hw many tentacles des a mn jellyfish usually have?
A. Abut 4 - 5 tentacles
B. Abut 40 - 50 tentacles
3.Hw far can a seahrse swim in abut an hur?
A. Abut 100 - 200 meters.
B. Abut 10 - 20 meters
4. Hw deep can a sperm whale usually dive underwater?
A. 100 - 200 meters.
B. 1000 - 2000 meters.
Lk at the pictures and guess its name accrding t the descriptins.
Presentatin
Activity 1 Lk and guess.
Hw big is it?
Where is it?
The ____________ is abut _____________square kilmeters.
Qinghai Lake
fur thusand six hundred
Hw lng is it?
The ________________ is abut ________________ kilmeters.
Changjiang River
six thusand three hundred
The castline f ______________ is abut ________ kilmeters lng.
the Arctic Ocean
Frty-five thusand three hundred ninety
The _____________cvers mre than _____________ square kilmeters.
Atlantic Ocean
ninety - three millin
Activity 1 Lk and read the sentences. Pay attentin t the numbers.
The Qinghai Lake cvers abut 4,600 square kilmeters.
The Changjiang River is abut 6,300 kilmeters.
The castline f the Arctic Ocean is abut 45,390 kilmeters lng.
The Atlantic Ocean cvers mre than 93,000,000 square kilmeters.
1, 425, 657, 565
Let’s learn!
five hundred and sixty-five
six hundredand fifty-seven thusand
fur hundred and twenty-five millin
Activity 2 Read and cmplete the table.
1.Antarctica is abut ________________________________________________(14,200,000) square kilmeters in size, and ice cvers abut 98 percent f the Sea f Marmara is abut __________________________________(11,350) square cver abut_______________________________(360,000,000) square kilmeters f the are abut _____________________________ (307,000,000) lakes in the wrld.
Activity 3 Cmplete the sentences.
furteen millin and tw hundred thusand
eleven thusand, three hundred and fifty
three hundred and sixty millin
three hundred and seven millin
Play a game.
Read and say the numbers.
846,143,251
2,846,143,251
Xia Ya is kncking n the dr.
Lk at the picture and guess.
Lk at the picture. Guess what they are talking abut.
What’s this?
What des it say n the picture?
It’s a pster abut saving the cean.
Read the cnversatin. Pay attentin t the imperative sentences.
Cme in, please
Oh, dn’t put it here. Please put it n that big chair.
Miss Wang, here is the pster abut saving the cean. Can I put it n the table?
Activity 1 Pair wrk.
Activity 2 Cmplete the table and learn hw t use imperative sentences.
主语“Yu”通常被省略，一般以动词原形开头。
祈使句的概念:1用于表达_________________________________等的句子。2 主语__________________________________________。3 可在句首或句末加上__________表示礼貌。4 句末用______________，用__________来读。
“Yu”通常被省略，一般以动词原形开头。
肯定祈使句(1) _______________________ (2) _______________________(3)________________________
Let型:Let+宾语+动词原形
(1) ____________________________
(2) ____________________________
D型和Be型:句首加Dn’t或never
N型: “N + 名词 / 动名词”
(3) ____________________________
Let型:Let十宾语十nt十动原
Match the pictures with the wrds r phrases.
take a shwer
Activity 3 Match the pictures.
Turn ff the tap while brushing teeth. Dn’t litter arund. …
Make imperative sentences.
Lk and say.
N littering!
Keep ff the grass!
Dn't make a nise!
Wait in line!
Dn't be late fr class!
Keep the classrm clean!
以 “Our Blue Planet and Water Cnservatin” 为主题，制作一份简单的海报。
1.至少三个用英语表达的数字信息。
否定句首加Dn’t或never
N + 名词 / 动名词
Let十宾语十nt十动原
单项选择( )1. 45,390 正确的读法是： A. frty - five thusand, three hundred and ninety B. frty - five hundreds, three hundreds and ninety C. frty - five thusand, three and ninety( )2.表示 “909,090,009,900” 中第二个 “9” 的数位的英文单词是：A. billin B. millin C. thusand
单项选择( )1.从括号内选择合适的单词完成句子：____________ (Save/Cllect) every drp f water. A. Save B. Cllect( )2.选出与 “Dn't waste water.” 意思相近的句子： A. N wasting water. B. Save water. C. Let's nt waste water.