8AUnit4GrammarAB(教育精品).ppt

牛津版牛津版八年级八年级(8A)Unit 4Unit 4 Grammar江苏江苏 徐建国徐建国 Unit4 Wild AnimalsIfGrammar Alionmonkeypandagiraffepolar bearzebratortoisefoxwolvestigercamelWhat will happen if you come to school late?I will miss some classes.If I come to school late.What will happen if you come to school late?If I come to school late,I will miss some classes.I will miss some classes if I come to school late.It is going to rain tomorrow.I will stay in bed.If it rains tomorrow,I will stay in bed.ifI will stay in bed If it rains tomorrow.We grow more bamboo.Giant pandas will have more food.If we grow more bamboo,giant pandas will have more food.ifGiant pandas will have more food if we grow more bamboo.It will be sunny tomorrow.We will have a trip tomorrow.We will have a trip if it is sunny tomorrow.IfIf在此引导一个条件状语从句。当在此引导一个条件状语从句。当主主句是一般将来时句是一般将来时，ifif引导的从句必须引导的从句必须用用现在时现在时来表示将来可能发生的动作来表示将来可能发生的动作或存在的状态。或存在的状态。A.Using conditional sentences to talk about possible situationsWe can use conditional sentences to talk about the possible result of a possible action.We make conditional sentences like this.If-clause 从句从句(simple present tense一般现在时一般现在时)Main clause 主句主句(simple future tense一般将来时一般将来时)If we grow more bamboo,giant pandas will have more food.If we do not protect giant pandas,they will die.n nWe need a _(comma,full stop)after the ifclause when it is the first part of a sentence.我们用我们用if 条件状语从句来谈论条件状语从句来谈论“可能可能的行动导致的可能的结果的行动导致的可能的结果”If we grow more bamboo,giant pandas will have more food to eat.Giant pandas will die if we do not protect them.Work out the rules翻译题翻译题1.1.如果人类没有食物吃，就会死亡。如果人类没有食物吃，就会死亡。2.2.在很久以前在很久以前,如果人们没有衣服穿，他们如果人们没有衣服穿，他们会杀死熊来获取皮毛。会杀死熊来获取皮毛。3.3.如果鹦鹉饥饿的话，它会敲打笼子的门。如果鹦鹉饥饿的话，它会敲打笼子的门。4.4.如果我收到她的来信，我会非常高兴。如果我收到她的来信，我会非常高兴。5.5.如果在野外的话如果在野外的话,狼会过着群居生活。狼会过着群居生活。The answers to the questionsn n1.If people have no food to eat,they will die.n n2.Long ago,if people have no clothes to wear,they will kill bears for fur.n n3.If a parrot is hungry,it will knock on the cage door.n n4.If I hear from her,I will be very happy.n n5.Wolves live in family groups if they are in the wild.Could you tell us something about Could you tell us something about what we learned in the last what we learned in the last period?period?DiscussionDiscussionproblemsIf hunters they will.If farmers Giant pandas will If people They will problemsIf hunters they willIf farmers giant pandas willIf peoplethey will catch a giant pandakill it for its fur.cut down trees and forestshave nowhere to live.find baby pandas aloneoften take them away.When if clause used generally now from the sentenceWhen the principal clause main clause used generally in the futureIf we grow more bamboo,giant pandas will have more food.If we do not protect giant pandas,they will die.What will happen?What will happen?1.If I see a snake in front of me,_2.Giant pandas will survive _3.I will see some beautiful birds _4.If I go to North Africa,_5.If I have time next weekend,_DCEABA.I will see a lot of camels.B.I will go to the zoo.C.if we protect them D.I will run the other way.E.if I walk through a rainforest,Why do I want to go to Beijing Zoo?1.If I _(go)to Beijing Zoo,I _(learn)a lot about animals.2.If I _(arrive)at noon,I _(see)the feeding of animals.3.If I _(find)the Monkey Hill,I _(have)fun there.gowill learnarrivewill seefind will have4.If I _(watch)the animals carefully,I _(get)enough information for my class report(报报告告).5.If I _(finish)my report(报告报告),I _(be)very happy.watchwill getfinishwill beFill in the blanksFill in the blanks1.If Eddie _(die),no one _(look)after Hobo.2.If Eddie and Hobo _(not have)enough food,they _(share)it.3.Wild animals _(be)in danger if hunters _(keep)killing them.dieswill lookdont havewill sharewill bekeep4.We _(keep)pandas safe from danger if we _(build)more reserves.5.You _(see)some squirrels if you _(go)to the zoo.6.The baby panda _(live)on his own if his mother _(leave)him for two whole days.will keepbuild will seegowill liveleaves7.If we _(build)the giant panda reserves,we _(encourage)them to leave.8.If we _(not do)anything,soon there _(be)no pandas in the world.buildwill encouragedont dowill beMaking comparisons.1.If people find baby pandas alone,they _(take)them away.2.If pandas are hungry,they _(eat)bamboo leaves.3.If birds are frightened,they _(fly)away.will takeeatwill fly4.If there are many beautiful birds in the zoo,we _(take)a camera with us.5.If a tiger _(not have)food for 15 days,it _(die).doesnt havedieswill takeGrammar B&C Giving reasons with“because”or“because of”Which animal do you like best?Why?I like because.Help Amy answer the questionsWhy did you go to Beijing Zoo?I went to Beijing Zoo because I wanted to see wild animals there.Help Amy answer the questionsWhy didnt you take any food for animals?I didnt take any food because we mustnt feed the animals in the zoo.Help Amy answer the questionsWhy did you stay in the zoo for so much time?I stayed in the zoo for so much time because the dolphin show was long.Help Amy answer the questionsWhy must we protect wild animals?We must protect wild animals because wild animals are our friends.Xi Wang had to look after herself because her mother had another baby.Why did you go to Beijng Zoo?Why didnt you take any food for animals?Giving reasons with“because”Why did you stay in the zoo for so much time?Why must we protect wild animals?It is very difficult for giant pandas to survive in the wild because of many reasons.All the people cheered/the wonderful showGiving reasons with“because of”Lots of people know about the show/the ads.The dolphins were really tired/the performanceSome students couldnt go to the show/the examGiving reasons with“because of”1.Why is the ground all wet?(flood)The ground was all wet because of the flood.2.Why is he so happy?(got an A for English)3.Why is she so sad?(lost her pen)4.Why is the baby crying?(hunger)5.Why didnt you go to the show?(the maths exam)Work out the rules:We can use“because”and“because of”to give the reason(s)for something.The word“because”introduces the clause of reason and we usually put it in the middle of a sentence.We use a noun,a noun phrase or a pronoun after“because of”.