1、 If it is cloudy this weekend,they will go fishing If it isWhat will they do this weekend?If it is sunny this weekend,they will play volleyball.you _.(tired)will be tired your parents _.(be not happy)will not be happyyour eyes _.(hurt)will be hurtIf you play computer games all day.If he always _(wat
2、ch TV),he_(bored).watches TVwill be boredin the future make a lot of money buy a big houseIf I make a lot of money,If I make a lot of money,I will buy a big house.I will buy a big house.If I have enough money,I will travel around the world.If I study hard,I will go to college.剑剑 桥桥 大大 学学if 引导的条件状语从句
3、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，从句一般现在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 you If you workwork hard,your dream hard,your dream will comewill come 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 it If it rainsrains tomorrow,tomorrow,I I wont gowont go out for a walk.out for a walk.If 引导条状语从句时，从句中用一般引导条状
4、语从句时，从句中用一般现在时代替一般将来时。现在时代替一般将来时。If he _(go)to the movies,he wont finish his work.goesIf I _(become)a doctor,I can help others.becomeIf we _(have)time,we will go to the park tomorrow.have如果你去，如果你去，我也去。我也去。If you go,I will go.如果明天下雨，请带雨衣如果明天下雨，请带雨衣。Please take a raincoat if it rains.1.If(如果如果)引导的引导的条
5、件状语从句条件状语从句,主句用主句用一般将来时一般将来时,从句用一般现在时从句用一般现在时.（主将从现）（主将从现）I wont go by plane if it rains tomorrow.If you dont hurry,youll miss the train.注意注意:从句放在主句之前或主句之后从句放在主句之前或主句之后.如放在如放在主句之前主句之前,要用逗号与主句隔开要用逗号与主句隔开.If引导的引导的宾语从句宾语从句,常译为常译为是否是否,应注意时态变化应注意时态变化.I dont know if he will come tomorrow.If 后紧跟的句子叫从句后紧跟的句
6、子叫从句,另一个句子叫主句另一个句子叫主句,主句和从句次序可以互相调换。主句和从句次序可以互相调换。If you study hard,youll get good grades.Youll get good grades if you study hard.“主将从现主将从现”不仅在不仅在if条件句条件句,也用在其它时间状从也用在其它时间状从:（1）until引导的时间状语从句引导的时间状语从句 The bus wont start until everybody gets on.公共汽车直到每人都上车为止，才开动。公共汽车直到每人都上车为止，才开动。（2）as soon as（一（一就）引
7、导的时间状语就）引导的时间状语 Mike will tell you as soon as he comes.Mike一来就会告诉你。一来就会告诉你。no war,the world,more beautiful,If there is no war,the world will be more beautiful.she,not exercise enough,heavierIf she doesnt exercise enough,she will be heavier.1.主将从现主将从现If he cleans the room,he can get$10 from his mothe
8、r.If I watch TV late,I cant get up early.If you get up late,you must take a bus to school.If you are sad,please talk with us.If you are hungry,please eat some food.Please call me if he comes next Sunday.3.主句是祈使句主句是祈使句2.主句含有情态动词主句含有情态动词结论结论:If 引导的条件状语从句中引导的条件状语从句中:从句用从句用一般现在时态一般现在时态;主句有三种情况主句有三种情况 一般
9、将来时态一般将来时态 含情态动词的含情态动词的 祈使句祈使句unless 除非除非,非非不可不可,表强烈的否定表强烈的否定You will fail unless you work harder.你不努力就会失败的。你不努力就会失败的。Dont come unless I call you.我不叫你就别来我不叫你就别来 注意注意:unless表示否定表示否定,从句的谓语要用肯定式从句的谓语要用肯定式 误误:Unless you dont work hard,you will fail.正正：Unless you work hard,you will fail.正正：If you dont wo
10、rk hard,you will fail.Dear Jenny,Thanks for inviting me to the party.Of course present,you are happy.I hope it wont rain that day.Because if it wont rain,my little son will come,too.If he comes,you arent disappointed,he is really funny.OK,see you on the party.Yours,will bedoesntgivewont beIll go to
11、the party.And I think if I will give you a Please help me correct the sentences.Rosev Correct and Write1.用所给词的正确形式填空。用所给词的正确形式填空。1.If you _(be)late,the teacher will be angry.2.He _(become)a soccer player if he works hard.3.You_(be)famous if you sing well.arewill becomewill be1.If they have the party
12、,(他们会玩他们会玩 得高兴得高兴)_2.If you get up late,(你会上学迟到你会上学迟到)_3.If you dont go to school,(你父母会你父母会担心担心)_4.If we finish our homework on time,(老师会让我们踢球老师会让我们踢球)_ _they will enjoy themselves.you will be late for school.your parents will be worried.our teacher will let us play football.Exercises1.The students
13、will go to the Summer Palace if it _(not rain)tomorrow.2.If he _(walk)to school,hell be late.3.If she likes it,she _(read)it soon.4.If you play computer games on weekdays,you _(be)tired.doesnt rainwalkswill readwill be5.If you _(work)hard,your dream will come true.6.If she _(study)hard,She will go t
14、o Beijing University.7.If it _ (rainy)tomorrow,I will play the piano.8.If I _(have)much money in the future,I will travel all over the world.studies is rainy havework1.Im sure if he _(go)to the party,he_ (have)a great time.2.If the rain _(stop)tonight,we will go to the cinema.3.Ill buy a computer if
15、 I _(have)enough money.4.You _(not get)nervous if you _(do)enough exercise.goes will have stopshave wont getdo 用括号内所给词的正确形式填空用括号内所给词的正确形式填空5.If she _(be)kind to me,I _(not argue)with her.6.I want to know if he _(come)tomorrow,if he _(come),I _(give)the massage to him.7.If you _(pay)more attention to
16、 that,he _ (not get)injured.iswont arguewill comecomeswill givewont getpay选择题：选择题：1.Who wants to buy the book?Mary_ A.do B.did C.does D.doing 2.They will go to the Great Wall if it _ rain tomorrow.A.doesnt B.wont C.isnt D.dont 3.If he_ here tomorrow,Ill meet him.A.come B.will come C.comes D.came 4.I
17、m going to Guilin for vacation_ A.Good Bye B.Is that true C.Really D.Have a good time 5.If she likes it,she _it soon.A.read B.reads C.will read D.reading6.If I _much money in the future,I will travel all over the world.A.have B.has C.having D.will have7.If you play computer games on weekdays,you _tired.A.are B.will C.be D.will be 8.If she _ hard,She will go to Beijing University.A.study B.will study C.studies D.is studyingAC DA CC DC
