1、Problem One:1.If it _(not rain)tomorrow,I will go to the park.2 If I am free tomorrow,I _(go)to the park.doesnt rainwill go 在在 条件状语从句中，如果主句条件状语从句中，如果主句是将来时态，从句要用是将来时态，从句要用_ 时态代表将时态代表将来时态，来时态，即即_原则。原则。一般现在时态一般现在时态主将从现主将从现 1.You must stay at home if it _(rain)tomorrow.2.I want to go to the park if it
2、_(not rain)tomorrow.3.Go to school if it _rainsdoesnt raindoesnt rain 1.含有某些情态动词的句子含有某些情态动词的句子 2 祈使句祈使句 3含有某些动词如含有某些动词如want hope等句子等句子也含有将来时态的含义也含有将来时态的含义知识拓展知识拓展还有哪种从句符合主将从现原则？还有哪种从句符合主将从现原则？时间状语从句时间状语从句1 If David _(bring)a map,he will find the place.2 If they break the school rules,the head teache
3、r _(punish)them.bringswill punish3.I want to visit my uncle if I _ (not be)busy this afternoon.4.Dont watch TV if you _(have)something important to do tomorrow.am nothave自我测试题组一：自我测试题组一：5 The students _(not have)a picnic if it _ (rain)next weekend.6 If he _harder,he will get good gradesA.works B.wor
4、kC.workingD.will workwont haverains7 Sally _ a film if she _free next Saturday.A.sees,will be B.will see,will be C.sees,will be D.will see,is I dont know if he _ tomorrow,if he _,let me know.A.comes,comes B.will come,will comeC.will come,comes D.comes,will come 讨论归纳：讨论归纳：if 用在宾语从句中表用在宾语从句中表“_”，从句时态要
5、使用从句时态要使用_来确来确定，定，if在条件状语从句中，表在条件状语从句中，表“_”.句子的时态符合句子的时态符合_ _原则。原则。抢答题：抢答题：从句中具有两面性的引从句中具有两面性的引导词导词 还有哪一个？还有哪一个？是否是否三原则三原则如果如果主将从现原则主将从现原则whenI dont know when he will come tomorrow,When he comes,he will tell me.1.Do you know if he _(visit)the Great wall tomorrow?2.He asked me if I _(visit)the Great
6、wall with him the next day.will visitwould visit ()3.If she _ harder,Kate will catch up with us soon A.study B studying C studies D studied()4.I dont know if he _next term.A.will study B studying C studies D studied 自我测试题组二：自我测试题组二：()5.I dont know if he _late,But I know if he_ quickly,he_ late for s
7、chool.A.will be,doesnt run,will be B.is,isnt run,is C.will be,wont run,is()1.I want to know if he _ tomorrow,if he _,please call me.A.will come,comes B.will come,will comeC.come,comes D.comes,will come()2.I dont know when he _ tomorrow,when he _,let me know.A.comes,comes B.will come,will comeC.will
8、come,comes D.comes,will come 1.Hurry up,or you will be late.=_ you dont hurry up,you will be late 2 If you study hard,you will pass the exam.=_ _,_ You will pass the examIfStudyhardandIf引导的条件状语从句，可以引导的条件状语从句，可以与与_ 进行转换进行转换注意：改写成条件句后，注意：改写成条件句后，不可不可以再用以再用_ 或或 _ 来连来连接主句。接主句。祈使句祈使句+and/or+含有将来时态的陈述句含有将
9、来时态的陈述句andor自我测试题组三：自我测试题组三：1.A:If you dont take a taxi,you will miss your plane.B:_ a taxi,_ you will miss your plane.2.A:If you cross the bridge,you will find the park.B:_ the bridge,_ you will find the park.TakeorCrossand6 Study hard,_ you can catch up with your classmate A andB but C or D so 抢答题一抢答题一：1.If you practise English Every day,and you will learn English well(改错）改错）抢答题二：抢答题二：()2.Hurry up,_you will be lateA.and B or C/D so 中考考点设置中考考点设置：1.1.主将从现原则主将从现原则2.If 的两面性的两面性3 if 与特殊句式的转换与特殊句式的转换*4.If 与与unless 含义及转含义及转换换
