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1、群力中学九年级上册英语教案总课题Unit 6 TV programmes总课时7第 4 课时课 题Grammar课型新授课教学目标To use if-clause to talk about the result of a possible action.To use unless to say that something can only happen or be true in a particular situation.教学重点To use if-clause to talk about the result of a possible action.To use unless to
2、 say that something can only happen or be true in a particular situation.教学难点To use if-clause to talk about the result of a possible action.To use unless to say that something can only happen or be true in a particular situation.教学设计Teaching aids: A computer, notebooks and work sheets. a calendaTeac
3、hing methods: Listening 、reading、acting& Discussing教 学 过 程教师活动内容、方式学 生 活 动备注(个性化设计)Step 1 PresentationTranslate1. 如果你是个足球迷，你不会想要错过这周的节目。 If you are a football fan, you will not want to miss this weeks programme.2. 这种情况将会持续下去除非人们停止为了皮毛和骨头而猎杀老虎。 The situation will continue unless humans stop hunting t
4、igers for their fur and bones.3. 如果你很容易被吓坏，别看了。 If you get scared easily, do not watch it.Sum up: We use if to talk about the result of a possible action. We make sentences with if like this:If-clause(simple present tense)Main clause(will/may/might/+infinitive)If you are a football fan,you will not
5、want to miss this weeks programme.If you are an animal-lover,you may feel sad about it.Pay attention:We put a comma after the if-clause when it is the first part of a sentence.TranslatePresent教师活动内容、方式学 生 活 动备注(个性化设计)Step 2 Grammar explanationSection A11. Complete the sentences with the correct form
6、s of the verbs in brackets.(The answers are given on PPT）2. Check the answers.3. Work out the rule!We often use the simple present tense in the if-clause. We use the simple future tense in the main clause.Section A21. Asking about animalsMillie watched a documentary about animals. Help Millie answer
7、 her fathers questions with the help of the words in the box. 2. Check the answers. (The answers are given on PPT）Section B1. Tell the students : We can use unless to say that something can only happen or be true in a particular situation.e.g. He wont come to the party unless you invite him.2. Expla
8、in: Sometimes we can use if . not to replace unless.e.g. The situation will continue unless humans stop hunting them for their fur and bones. The situation will continue if humans do not stop hunting them for their fur and bones.e.g. Unless it rains tomorrow, we are going to play football in the par
9、k. If it does not rain tomorrow, we are going to play football in the park.The unless-clause can come first or after the main clause.e.g. Unless you try your best, you will not realize your dream. You will be late unless you leave right now.3. Exercises on Page 86. Match the two parts of the sentenc
10、es and write the correct letters in the blanks.4. Check the answers. (The answers are given on PPT）5. Work out the rule!We use the simple present tense in the unless-clause.Complete the sentences with the correct forms of the verbs Work out the ruleAsk and answerGrammar explanationGrammar explanatio
11、nStep 3 Grammar summary条件状语从句 条件状语从句主要由if或unless引导： if条件句1) if条件句：条件句用于陈述语气，表示假设的情况可能发生，其中if是“如果”的意思。e.g. If it rains, we will stay at home.Learn the usage of “if”Grammar summary教师活动内容、方式学 生 活 动备注(个性化设计)如果下雨我们就待在家里。2)用法：(1)条件状语从句通常由连词if引导，意为“如果、假如”，主句不能用begoingto表示将来，而应该用shall，will。e.g. Ifyouleaveno
12、w,youwillneverregretit. 如果你现在离开，你永远都不会后悔。(2)if“如果”，引导条件状语从句，主句用一般将来时，从句则用一般现在时。e.g. Ifitrainstomorrow, Ishantclimbthehills.如果明天下雨，我就不爬山了。(3)主句是祈使句或含有情态动词，从句也用一般现在时。如：PleasecallmeifhecomesnextSunday. 如果他下周日过来请打电话给我。（注意）宾语从句中的if与条件状语从句if的区别。宾语从句中的if“是否”相当于whether，引导宾语从句，时态需根据语境确定。如果主句用一般现在时，从句可以根据具体情况
13、选用时态，如果主句用一般过去时，从句必须用过去式的某种形式。Unless 条件句unless引导的条件句，表示强烈的否定。翻译为“除非”“非不可”。e.g. Youwillfailunlessyouworkharder.你不努力就会失败的。=You will fail if you do not work harder.（注意）unless从句里的谓语只能是肯定式，因为本身unless表示否定。Learn the usage of “if”Grammar summaryStep 4 Exercises单项选择。1.Ifthere_nobuyingandsellingofanimals,ther
14、e_nokillinginnature. A.is;willbeB.willbe;willbe C.is;is D.willbe;is2. Imwaitingformyfriend. _,Illgoshoppingalone.A.IfshecomesB.IfshewontcomeC.Ifshedoesntcome3. We are going to have a barbecue _ it rains. A. if not B. when C. except that D. unless4. Eat less food _ you want to put on weight.A. if B. unless C. until D. as soon asDo some exercisesDo some exercisesStep 5 HomeworkFin
