1、If 引导条件状语从句引导条件状语从句 GRAMMAR:1位置:从句可放在主句之前或之后,但是放在主句之从句可放在主句之前或之后,但是放在主句之前须有逗号隔开前须有逗号隔开eg:如果我有足够的钱,我就去环游世界如果我有足够的钱,我就去环游世界定义:定义:if “如果如果,假如假如”它引导的句子表示某事发它引导的句子表示某事发生所需的条件,即生所需的条件,即“在在条件下,某事才能发生条件下,某事才能发生”,在句子中充当状语,因此称之为条件状语从句。在句子中充当状语,因此称之为条件状语从句。(If引导的条件状语从句表示假如有从句的动作发引导的条件状语从句表示假如有从句的动作发生,就会有主句动作的发
2、生生,就会有主句动作的发生)If I have enough money,I will travel around the world=I will travel around the world if I have enough moneyIf it rains tomorrow,I will stay at home.一、什么是条件状语从句?一、什么是条件状语从句?2If I get up late,I will be late for school.If I dont finish my homework,I wont go to bed.If you join the band(乐队乐
3、队),you will be famous.主从句的时态?主从句的时态?3无忧PPT整理发布If条件句:条件句用于陈述语气,表示假设的情况可能发生,其中 if 是“假如,如果”的意思。主句主句一般将来时一般将来时,从句用,从句用一般现在时一般现在时。运用运用“主将从现主将从现”的原则。的原则。4无忧PPT整理发布用法:1.如果主句是一般将来时,从句则用一般现在时。如果主句是一般将来时,从句则用一般现在时。If it rains(从句),I will stay at home.Ill go with you if you dont want to go alone(从句).2.如果主句含有如果主
4、句含有must,may,can 等情态动词,从句也要用等情态动词,从句也要用一般现在时。一般现在时。If you drive too fast,you may have an accident.You must stop if the traffic is red.If you finish the homework,you can go home 如果你作业做完了就可以回家了。如果你作业做完了就可以回家了。If you want to lose weight you must/should eat less bread.如果你想减肥,你必须少吃面包。如果你想减肥,你必须少吃面包。5无忧PPT
5、整理发布 3.如果主句是祈使句,从句同样要用一如果主句是祈使句,从句同样要用一般现在时。般现在时。Dont go and play football if you dont finish your homework.Please call me if he comes next Sunday.6无忧PPT整理发布练一练练一练:1。如果她早点儿起床,就有时间在家里吃早餐 If she_ _a little earlier,shell have time to eat breakfast at home.2。如果你参加聚会,你将会过得很开心。If you_ the party,you_ _ a g
6、reat time.3。如果明天下雨,我们将不去野餐If it _tomorrow,we _ _ for a picnic.4。如果你经常听英文歌,你将会喜欢英语If you often _ _English songs,you_ _English.gets upjoin will haverains wont golisten to will like7无忧PPT整理发布1.If he_(not,do)it,I _(do)it.2.If you _(be)late for school,my teacher _(be)angry.arewill be3.If she_(win)the pri
7、ze,we _(be)happy.winswill be4.If I _ (not,eat)so much,I _(get)thinner.5.If you _(tell)them,they _ (not,believe)you.dont eatwill gettellwont believedoesnt dowill do用所给单词的正确形式填空:用所给单词的正确形式填空:8无忧PPT整理发布6 I _(stay)at home if it _(rain).7.If it _(not,rain),I _(go)out.8.we _(play)football if it is _(sun).
8、9.If she _(become)a star,her parents _(be)proud of her.10.He _(watch)TV if he _(be)free.will stayrainsdoesnt rainwill gowill playsunnybecomeswill bewill watchis9无忧PPT整理发布10无忧PPT整理发布11无忧PPT整理发布12无忧PPT整理发布中考真题:(2011安徽)1.If the rain _(stop)tonight,we will go to the cinema.(2012黑龙江)2.Ill buy a computer
9、if I _(have)enoug money.(2013内蒙古)3.You _(not get)nervous if you _(do)enough exercise.(2014浙江)4.If she _(be)kind to me,I _(not argue)with her.stopshave wont getdo iswont argue 13分析试题特点及做题思路:分析试题特点及做题思路:1.考连词考连词-做题思路:做题思路:分析句子分析句子-判断关系判断关系-选择正确的连词:选择正确的连词:1.You wont get nervous _you do enough exercise
10、.A.if,B,unless C,whether 2._ you hurry up,you will miss the early bus.A.if,B,unless C,whether分析试题特点及做题思路:分析试题特点及做题思路:14无忧PPT整理发布 2.You may _ (pass)the exam if you _ (study)hard.2.考时态考时态-做题思路:做题思路:认字认字-判断语境提供的时态特点判断语境提供的时态特点-选择正确的时态选择正确的时态A.rain,stay B.rains,stay C.rains,will stay D.rain,will stay 1.
11、If It_(rain)tomorrow,I_(stay)at home.A.pass,study B.will pass,study C.pass,will study D.passes,study15无忧PPT整理发布If Im ill,_.I will see a doctorIf Im late,_.I will say sorry 条件状语从句在日常生中的应用:条件状语从句在日常生中的应用:16无忧PPT整理发布If Im hungry,I will_.If Im tired,I will_.eat some foodhave a rest17无忧PPT整理发布 If it rain
12、s tomorrow,I_.will watch TV at homeIf it _ tomorrow,_.Ill play basketballdoesnt rain18无忧PPT整理发布 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,条件句表可能,主将从现不一般;主将从现不一般;条件句表事实,条件句表事实,主句常用现在时。主句常用现在时。Summary(小结)19无忧PPT整理发布If we study harder,we will do well in the exams,Try our best to study harder.20无忧PPT整理发布Homework.Finish the exercises in the workbook.21无忧PPT整理发布再见再见22