1、Unit 3Lets review Steves problem.Last week,Steve and his friends played computer games on his fathers computer.But his father has _ him _ his computer for playing games.He thinks that if he _,it will _.But when his father was out,they tried out the game.After they finished playing,they _ the game _
2、the computer.However,some of his fathers documents _ when they checked the computer.not to use toldplays games on itgo wrongtook were missingoffHis father was angry because he could _ find the documents anywhere.Steve didnt tell him about the computer game.He feels _ now.not longerterribleRead the s
3、entences.If I start after dinner,Ill finish it before I go to bed.If you do all these other things instead of your homework,you wont have time to study.He thinks it will go wrong if I play games on it.条件状语从句表示主句动作发生的条件，条件状语从句表示主句动作发生的条件，在初中阶段常由在初中阶段常由if(如果如果)引导，表示假引导，表示假如有从句的动作发生就会有主句的动作如有从句的动作发生就会有
4、主句的动作发生。发生。Please call me if he is at home.假如他在家的话，请给我打电话。假如他在家的话，请给我打电话。if引导的条件状语从句的用法引导的条件状语从句的用法if 引导的条件状语从句位置灵活引导的条件状语从句位置灵活,可直接放可直接放在主句后面在主句后面,也可以放在句首。放在句首时也可以放在句首。放在句首时,从句后面要用逗号和主句隔开。如：从句后面要用逗号和主句隔开。如：Ill go to see you if I have time.如果有时间，我就去看你。如果有时间，我就去看你。If it rains tomorrow,well stay at ho
5、me.如果明天下雨，我们就呆在家里。如果明天下雨，我们就呆在家里。时态：时态：如果主句是一般将来时态，这时从如果主句是一般将来时态，这时从句不可以用将来时态，而要用一般现在句不可以用将来时态，而要用一般现在时。例如：时。例如：I wont go there with you if it rains tomorrow.如果明天下雨的话，我就不和你一起如果明天下雨的话，我就不和你一起去那儿了。去那儿了。Have a good rest if you are tired.如果累了，你就好好休息一下。如果累了，你就好好休息一下。We must study hard if we want to pass
6、 the final exam.如果想通过期末考试，我们必须努力学如果想通过期末考试，我们必须努力学习。习。当主句是祈使句，或当主句含有情态动词时，当主句是祈使句，或当主句含有情态动词时，if引导的条件状语从句通常用一般现在时。引导的条件状语从句通常用一般现在时。学习学习 if 引导的条件状语从句用法的口引导的条件状语从句用法的口诀诀:if 条件句不一般条件句不一般,几个要点记心间几个要点记心间;条件句条件句,放在前放在前,逗号要放句中间。逗号要放句中间。条件句表可能，主句多用将来时条件句表可能，主句多用将来时;条件句表事实，主句常用现在时。条件句表事实，主句常用现在时。有时可以用有时可以用“
7、祈使句祈使句+and/or+简单句简单句”替代条件状语从句和主句，其中替代条件状语从句和主句，其中and表示表示句意顺承，句意顺承，or则表示转折，意为则表示转折，意为“否否则则”。例如：。例如：If you work harder,youll pass the exam.=Work harder,and youll pass the exam.If you dont hurry up,you will miss the last bus.=Hurry up,or you will miss the last bus.Summary 1.If he_(not,do)it,I _(do)it.2
8、.If you _(be)late for school,my teacher _(be)angry.3 If she_(win)the prize,we _(be)happy.4.If I _ (not,eat)so much,I _(get)thinner.5.If you _(tell)them,they _ (not,believe)you.arewill bewinswill bedont eatwill gettellwont believedoesnt dowill do6 I _(stay)at home if it _(rain).7.If it _(not,rain),I
9、_(go)out.8.We _(play)soccer if it is _(sun).9.If she _(become)a star,her parents _(not,send)her away.10.He _(watch)TV if he _(be)free.will stayrainsdoesnt rainwill gowill playsunnybecomeswont sendwill watchisRewrite the sentences with if.1.Eat breakfast,or youll get hungry at school.If you dont eat
10、breakfast,youll get hungry at school.Youll get hungry at school if you dont eat breakfast.2.Hurry up!Well be late!If you dont hurry up,well be late.Well be late if you dont hurry up.3.Read the book carefully.Then you will not make mistakes.If you read the book carefully,you will not make mistakes.Yo
11、u will not make mistakes if you read the book carefully.4.Dont watch too much TV,or your eyes will hurt.If you watch too much TV,your eyes will hurt.Your eyes will hurt if you watch too much TV.5.Work harder!You will get higher marks.If you work harder,you will get higher marks.You will get higher m
12、arks if you work harder.1.If we _(get)the news soon,we _(tell)you at once.2.If there _(be)many wild animals in the forest,I _(be careful).3.He _(not come)here if you _(not tell)him next Monday.will tell will be carefulwont comegetaredont tell4.If you _(want)to download some music,_(connect)your MP3
13、player with the computer.5.If you _(be)unhappy,you can _(call)me.6.If your hands _(be)dirty,_(wash)them.7.If she _(win)the prize,her parents _(be)happy.wantconnectarecallarewashwinswill be8.If you _(not practise)your English,you _ (not be)good at it.9.If you _(stay)up late,you _(get)up late.10.If sh
14、e _(drink)more hot water,she _(feel)better.11.If they _(tell)the truth,it _(prove)that theyre honest.dont practisewont bestaywill getdrinkswill feeltellwill proveComplete the sentences.Give advice with the correct form of the words.How can I remember my friends birthdays?If _ _ (keep a note in your
15、diary/not forget).1you keep a note in your diary,you wont forget.2 Its late,but I dont want to go to sleep.If _ _ (not get enough sleep/feel tired at school).3 I dont like speaking English outside the classroom.If _ (not practise/not improve).you dont get enough sleep,youllfeel tired at schoolyou do
16、nt practise,you wont improve4 Should I tell my teacher I dont understand the homework?If _ _ (not tell her/she not able to help you).5 Is it OK if I watch TV for six hours?If _ _ (you watch too much TV/eyes hurt).you dont tell her,she wont be able tohelp youyou watch too much TV,your eyes willhurtIf
17、 you feel hungry,_.If you feel tired,_.eat somethinghave a restLook and say.If you are ill,_.If your hands are dirty,_.wash themsee a doctorIf you get up late,youwill _.If you want to get good marks,_.be late for schoolstudy hardIf it is sunny tomorrow,we will _.If it isnt sunny,_.we wont play socce
18、rplay soccer If it rains,I _.will watch TV at homeIf it rains,I _.wont play basketballIf people catch the _,they will _ him.punishthief1.I will be really happy if _.2.I will do well in English if _.3.My parents will be angry if _.4.If it rains next Saturday,_.Work in pairs.Complete the sentences so
19、that they are true for you.I pass all my exams I practise a lot at homeI dont find my mobile phoneI will stay at home and watch a film on TVComplete the conversation with the words and expressions in the box.Answers:Answers:1.terrible 2.pocket money 3.problem 4.refused 5.wore 6.repair 7.truth 8.honestComplete the passage with the correct form of the expressions in the box.Answers:Answers:1.are angry with 2.be proud of 3.at the end of 4.listen toEnjoy a song Dont Worry,Be Happy by Bobby McFerrin.
