英语：Unit7_Know_Our_World_lesson50课件(冀教版八年级下).ppt

Learning aims:1.Master: land, Europe, America, Ocean, Pacific, Atlantic, Indian, Arctic, earth, surface, river2.Understand: continent, Antarctica, the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Arctic Ocean, Nile3.Using: three-quarters, one-fifth,one-thirdlandoceanAsiaEuropeNorth AmericaSouth AmericaAfricaAntarcticaOceaniaThe continents of the worldthe Atlantic Oceanthe Indian OceanThe Arctic OceanThe Pacific Oceanthe oceans of the world1. There are _ continents in the world. They are _ _.2. There are _ oceans in the world. They are _ _ _.sevenfourAsia, Europe, Africa,North America, South America, OceaniaAntarcticathe Pacific Ocean, The Arctic Oceanthe Atlantic Oceanthe Atlantic Ocean1.In 2000, the worlds population is _. By 2025, the world will have _ people.2. About _of the world is land. 3.Oceans cover about _ of the earths surface. 4.Deserts cover _ of the earths surface. 5.The worlds biggest island is _. The coldest and the driest continent in the world is _. 6.The longest river in the world is _.six billion7.8 billionone-fourththree-quarterstwenty percentGreenland Antarctic The Nile RiverThe world I knowI.Choose the best answers:( ) 1. _ of the students are from the countryside. A. Third quarter B. Three quarters C. Three quarter D. Third quarters( ) 2.A quarter of the students_let their books at home. A. are B. is C. have D. has ( ) 3.The Yellow River is _ in China. A. second longest river B. the second longest river C. the second longest rivers D. the longest riverLets do the exercises:BACII . Fill in the blanks.1. They will be there _ ( 在周末以前）在周末以前）.2. _ (四分之三四分之三) of the apples are green.3. Milk _ (对对有益）有益）your health.4. The world _ (由由组成）组成）many different kinds of places.by the weekendThree quarters be good foris made up of