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1、Enjoy the songMiss Dai If you are happy,what will you do?If you are happy, what will you do? If I am happy, I will sing.If it is sunny tomorrow, what will you do?If it is fine tomorrow, I will play footballIf it rains tomorrow, what will you do?If it rains tomorrow, I will stay at home and study har
2、d. What will you do if you have much money?I will buy a car if I have much money.Find the rules If I am happy, I will sing If it is fine tomorrow, I will play football If it rains tomorrow, I will stay at home and study hard. If I have much money ,I will buy a car. if 引导的条件状语从句引导的条件状语从句,主句一般将来时，从句用一
3、般现在时来表将来时if 引导的条件状语从句引导的条件状语从句时态主将从现时态主将从现主句一般将来时，从句用一般现在时来表将来时例句例句如果你努力工作，你的梦想将会实现如果你努力工作，你的梦想将会实现If youIf you workwork hard, your dreamhard, your dream will will comecome true.true.例句如果明天下雨，我将不出去散步例句如果明天下雨，我将不出去散步If itIf it rainsrains tomorrow,tomorrow,I I wont gowont go out for a walk.out for a w
4、alk.主句是祈使句或含有情态动词，从主句是祈使句或含有情态动词，从句也用一般现在时。如：句也用一般现在时。如：Please call me if he comes next Sunday.You must hurry if you want to go with me. 注意宾语从句中的注意宾语从句中的if与条件状语从与条件状语从 句的区别。宾语从句中的句的区别。宾语从句中的if“是是否否 相当于相当于 whether，引导宾语从句，引导宾语从句 时态需根据语境确定。时态需根据语境确定。ExercisesFill in the blanks with the words given.1.Th
5、e students will go to the Great Wall if it _ (not rain) tomorrow.2.If he _ (not do) his homework, hell be late.3.If she likes it, she _ (read) it soon.4.If you play computer games on weekdays, you _ (be) tired.5.If you watch TV tonight, you _ (not study) for the test.doesnt raindoesnt dowill readwil
6、l bewont studySection A1a-2cUnit 5 If you go to the party, youll have a great time !1. I think Im going to the party with Karen and Ann.2. I think Im going to wear jeans to the party.3. I think Im going to take the bus to the party .4. I think Im going to stay at home.a. If you do,the teachers wont
7、let you in.b. If you do, youll be late.c. If you do, youll be sorry.d. If you do, youll have a great time. have a great/good time玩的玩的开心，近义词还有开心，近义词还有 enjoy oneself ,have fun一条牛仔裤一条牛仔裤 a pair of jeans let sb in 让某人进入（来）让某人进入（来）是动副结构是动副结构代词是宾语时必须放在代词是宾语时必须放在中间中间。其反义词为其反义词为let sb out让某人出让某人出去去let sb do
8、 sth 让某人做某事让某人做某事1. I think Im going to go to the party with Karen and Ann.2. I think Im going to wear jeans to the party.3. I think Im going to take the bus to the party.4. I think Im going to stay at home.a. If you do, the teachers wont let you in.b. If you do, youll be late.c. If you do, youll be
9、 sorry.d. If you do, youll have a great time. 1bListen Were your answers to activity 1a correct?备注：备注：do (does/did ),是代替上文出现的，是避免重复的出现，是代替上文出现的，是避免重复的出现， A: What are you going to do ?B I think Im going to stay at home.A: If you do, youll be sorry.1c2a Listen and number these phrases in the order you
10、 hear them.a._study for the testb._1_help me organize it c._too early d._make some foode._Saturday afternoonf._play party games 32645What will happen if they have the party today?Half the class wont come.What will happen if they have the party tomorrow?What will happen if they watch a video at the p
11、arty?What is Mark going to organize?What is Andrea going to do?Students will leave early to study for their tests.Some students will be bored.He is going to organize the party games.She is going to make some food.Listen again and answer the questions.2CLook at the chart above and role play the Conve
12、rsation between Andrea and her friend.A: OK,when is a good time to have the party?B: Lets have it today.A: If we have it today, half the class wont come. Half the class wont come. 一半的同学将不会来。一半的同学将不会来。half的用法：的用法：1 half adj. 一半的，一般要放在冠词、物主代词或指示一半的，一般要放在冠词、物主代词或指示代词之前。半小时代词之前。半小时_“half + 名词名词” 作主语时，谓语
13、动词的单、复数形式由所作主语时，谓语动词的单、复数形式由所接名词的单、复数形式来决定，名词是中心词。接名词的单、复数形式来决定，名词是中心词。 Half the apples_ bad. 这些苹果中有一半是坏的。这些苹果中有一半是坏的。Half the apple _ bad. 这个苹果一半是坏的这个苹果一半是坏的 2 Half 还可作名词，意为还可作名词，意为“半，一半半，一半”其复数形式为其复数形式为_.“个半个半”可表达为可表达为“数词数词 + 名词名词 + and a half”或或“数词数词 + and a half + 名词（复数名词（复数）”。例如：。例如：三个半小时三个半小时
14、three hours and a half three and a half hours half an hour areishalvesWhen is a good time to have the party? 举行聚会的最佳时间是在什么时候？举行聚会的最佳时间是在什么时候？ to have the party是动词不定式作后置定语，修是动词不定式作后置定语，修饰名词饰名词time不定式作定语时，常放在被修饰的词语之后不定式作定语时，常放在被修饰的词语之后. Would you like something _?A. drink B. drinking C. to drink D. dr
15、inks . I have a lot of homework _.A. do B. doing C. did D. to doCDSummary ：条件状语从句：条件状语从句1.If +, Ill / youll + 条件状语从句条件状语从句主句主句2. Look!I think Ill ride my bike.If you do, youll be late Ill= I willI think Im going to stay at homeIf you do, youll be sorry Youll= you will 注：条件状语从句不能出现将来时，只能用一般现在时代注：条件状语从句不能出现将来时，只能用一般现在时代 替将来时替将来时Talk about how to achieve(实现) your dreams.If I want to be ,I will Thanks for listening!See you!