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1、Unit 5 If you go to the party, youll have a great time!Section A 1a-1cIfIt will be sunny tomorrow.Find the rule (1)We will have a picnic tomorrow.Find the rule (1)We will have a picnic if its sunny tomorrow.It will be sunny tomorrow.We will have a picnic tomorrow.I will take part in the English comp

2、etition.Find the rule (2)Dad will buy a pen for me. Find the rule (2)Dad will buy a pen for me if I take part in the English competition.I will take part in the English competition.Dad will buy a pen for me.We will go to the park.It wont rain tomorrow.We will go to the park if it doesnt rain tomorro

3、w.Find the rule (3)if條件狀語從句中，主句用一條件狀語從句中，主句用一般將來時，從句用一般現(xiàn)在般將來時，從句用一般現(xiàn)在時表示將來。時表示將來。 If you wont hurry up, you will miss the early bus.If you dont hurry up, you will miss the early bus.Whats the rule? （1）If you., you will.if條件狀語從句中，如果主句條件狀語從句中，如果主句有有must，can，may等情態(tài)動等情態(tài)動詞，從句用一般現(xiàn)在時詞，從句用一般現(xiàn)在時。 You must st

4、op if the traffic light is red.You may go fishing if you are free.He can go home if he finishes his homework.Whats the rule? （2）if條件狀語從句中，如果主句條件狀語從句中，如果主句是祈使句，從句用一般現(xiàn)在時。是祈使句，從句用一般現(xiàn)在時。 Let me know if he comes.Dont wait for me if I am late.Put up your hands if you have any questions.Whats the rule? （3）

5、2. If條件狀語從句中，如果主句有must，can，may等情態(tài)動詞，從句用一般現(xiàn)在時。（主情從現(xiàn)） 3. If條件狀語從句中，如果主句是祈使句，從句用一般現(xiàn)在時。（主祈從現(xiàn)） 1. If條件狀語從句中，主句用一般將來時，從句用一般現(xiàn)在時表示將來。（主將從現(xiàn)） Rules 3.If Mary (buy) the book, she will use up all her money. 1.If I (be) free, Ill visit my aunt next Sunday.4.If I (study) hard, Ill win the English competition.2.If

6、 it (be) cold tomorrow, I will wear my sweater. amisbuysstudyExercise (1):5. If a UFO (land) in front of me, I (go) in to look for the alien.landswill go Exercise (2):1.Call me if the boss (will come/comes).comes2. She must see a dentist if she (has/will have) a toothache.has3.Have a good rest if yo

7、u (will be/are) tired.are4.You can go shopping with your sister if you (have/will have) time this afternoon. have5.If there (will be/ is) a car accident, they (will call/call) 110 at once. iswill call What will you do if you have a lot of money one day?Discuss with your partner:What will you do if you can be a teacher one day?Discuss with your partner:What will you do if you dont have classes tomorrow?Discuss with your partner:What will you do if you dont finish your homework?Discuss with your partner:HOMEWORK1.Write the sentences in 1a.2.Make a conversation with “if clause”.