1、If you miss my party,you will be sorry.if clause从句从句main clause主句主句If clauseIf+Present simplePresent simpleIf I oversleep I miss the bus.If I miss the bus,I am late for school.If I am late for school,my teacher gets angry.If clauseMain clauseIf+Present tensewill/can/may/must+verbIf I go to London I
2、will see the Big Ben.If I go to Buckingham Palace,I can take a photo of the Royal Guard.If you go to London,you must look right before crossing a streetif 引导的条件状语从句引导的条件状语从句Watch and learnWhat tenses do the sentences use?一般现在时一般现在时一般将来时一般将来时Watch and learn这些句子都表示对事情的结果进行预测。这些句子都表示对事情的结果进行预测。Can you
3、tell the conjunction(连词连词)that connects the two parts of the sentences?What does it mean?Watch and learnWhats the meaning of the“do”here?If you take the bus to the party,youll be late.If you stay at home,youll be sorry.时态：时态：1.如果如果主句主句是是一般将来时一般将来时，从句常从句常用用一般一般现在时现在时。即应遵循。即应遵循“主将从现主将从现”的原则，的原则，If she
4、 comes to see me tomorrow,Ill be happy.If it snows tomorrow,I will not go to the park.wont主将从现主将从现2.如果主句含有如果主句含有must/can/may 等情态等情态动词，从句一般用动词，从句一般用_。You must stop if the traffic light _(be)red.is一般现在时一般现在时3.如果主句是如果主句是祈使句祈使句，从句也常从句也常用用_。一般现在时一般现在时Please stay at home if it _(rain)tomorrow.rains主情从现主情从
5、现主祈从现主祈从现用 ifwill 造句if I join lions.I will travel around the worldIf I have a lot of money,I will buy a big house.中考预热中考预热1.You can surf the Internet _you want to know about the 2020 World Middle School Games.A.Until B.After C.if D.Unless2.If I _a two-week holiday next year,I will take part in a sho
6、rt study tour to Beijing University.A.took B.take C.will take D.are takingCBC()4.If it _ sunny tomorrow,I _ boating.A.is go B.will be,go C.is,will go D.will be,will go()5.-what will you do if it _ tomorrow,-Ill stay at home and watch TV.A.rain B.rains C.will rain D.is raining CB()6.If he _,I _ him the time.A.comes,tell B.will come,will tellC.comes,will tell D.will come,tell()7.If it _,it _cold.A.snows,will be B.snows,isC.will snow,will be D.will snow,is()8.If you _a stone into water,it _.A.put,sinks B.put,will sinkC.will put,sinks D.will put,will sinkCB A
