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1、欢迎来到英语课堂欢迎来到英语课堂Unit 6 GrammarIf you are a football fan, you will not want to miss this weeks programme.If you are an animal-lover, you may feel sad about it.If you enjoy solving mysteries, you might like this film.如果你是一个足球迷，你不会想要错过这一周的节目。如果你是一个足球迷，你不会想要错过这一周的节目。如果你是一个动物爱好者，你可能会为它而感到伤心。如果你是一个动物爱好者，你
2、可能会为它而感到伤心。如果你喜欢解开谜团，你可能会喜欢这部电影。如果你喜欢解开谜团，你可能会喜欢这部电影。simple present tense 一般现在时一般现在时 simple future tense 一般将来时一般将来时you will not want to miss this weeks programme.you may feel sad about it.you might like this film.Conditional Sentences(条件状语从句） If you are a football fan,If you are an animal-lover,If y
3、ou enjoy solving mysteries, If-clause(从句从句) Main clause（主句）（主句）Ifclause (一般现在时）一般现在时） Main-clause(一般将来时）一般将来时）Main-clause(一般将来时）一般将来时） Ifclause (一般现在时）一般现在时） , We need a _( comma, full stop) after the if-clause when it is the first part of a sentence.Rulescomma, . 在在if引导的条件状语从句中，主句除了用一般引导的条件状语从句中，主句
4、除了用一般 将来时之外，将来时之外，还可含有还可含有can,may,might,must 等情态动词等情态动词。如：。如： You must see the doctor if you are ill. If you enjoy solving mysteries,you might like this film. 4)在在if引导的条件状语从句中，主句也可含有祈引导的条件状语从句中，主句也可含有祈 使句。如：使句。如： If you get scared easily,do not watch it!如果你很容易害怕，不要看它。如果你很容易害怕，不要看它。If you get scared
5、easily, do not watch it!If you enjoy solving mysteries,you might like this film.If you are a football fan, you will not want to miss this weeks programme.If 从句用一般现在时从句用一般现在时主句用一般将来时主句用一般将来时主句含有情态动词主句含有情态动词主句为祈使句主句为祈使句will+ domay/might+ doIf hunters catch a giant panda, they will kill it for fur. The
6、 dangers that giant pandas are facing:We can go and fly the kite if it is fine tomorrow.Dont watch it if you get scared easily.= They will kill it for fur if hunters catch a giant panda.= If it is fine tomorrow, we can go and fly the kite.= If you get scared easily,do not watch it!学生活动指导：阅读题目学生活动指导：
7、阅读题目30秒，用另一种句式改写句子。个人抢答，一分秒，用另一种句式改写句子。个人抢答，一分/一句。一句。1.If I (go, will go) to the Reading Club this afternoon, I (do not have, may not have) any time to watch TV.2. If Simon (gets, will get ) home too late, he (miss, will miss) his favourite cartoon.3. If Amy (completes, will complete) all her homewo
8、rk quickly, she (watches, will watch) the chat show.4. If Daniel (takes, will take) part in the game show, he (wins, might win) a prize.5. If Sandy (finds, will find) a programme interesting, she (introduces, will introduce) it to us1. If I _ (go, will go) to the Reading Club this afternoon, I _( do
9、 not have, may not have) any time to watch TV.2. If Simon_(gets, will get) home late, he _ (misses, will miss) his favourite cartoon.gomay not havegetswill miss3. If Amy _(completes, will complete) all her homework quickly, she _ (watches, will watch) the chat pleteswill watch4. If Daniel _ (takes,
10、will take) part in the game show, he _ (wins, might win) a prize.takesmight win5. If Sandy _(finds, will find) a programme interesting, she _ (introduces, will introduce) it to us.findswill introducea. if they live in the wild.1. Tigers will live as a familyb. if they have babies.2. Tigers will hunt
11、 for their own foodMatch the sentences 连线- What will a bear do if it is in danger?-If a bear is in danger, it _. ChoiceA. B. will be afraidC. will shout-If you meet a bear in the wild, what will you do ?- I will_if I meet a bear in the wild.A. climb up the treeB. stay there and hold my breath(屏住呼吸屏住
12、呼吸) for a few seconds C. run the other waywill attack people What will a polar bear do if it is hungry ? catch fish from water If a polar bear is hungry, it will catch fish from water.Ask and AnswerA A2 2 : :Dad: What will a bear do if it is in danger?Millie: If a bear_, it _ people.Dad: What will a
13、 polar bear do if it is hungry?Millie: If a polar bear _, it _fish from the water. Dad: What will elephants do if they are thirsty?Millie: If elephants _, they _ till they find a river.Dad: What will tigers do if they live in the wild?Millie: Tigers _ for their own food if they _.Dad: What will tige
14、rs do if they have babies?Millie: Tigers _ as a family if they _.Dad: What will male wolves do if there is danger?Millie: Male wolves _ their families if there _.is in danger will attackis hungry will catch are thirsty will walk will hunt live in the wild will live have babies will protectis dangera
15、ttack catch hunt live protect walk学生活动指导：独立完成，组长检查组员并纠正错误。学生活动指导：独立完成，组长检查组员并纠正错误。(2分钟分钟)The situation will continue unless humans stop hunting them for their fur and bones. 自学提示：自学2分钟，仔细观察P85页两组例句，总结规律。1、unless的意思是_,相当于_2、在unless引导的条件状语从句中，主句中的动词常用_时，从句中的动词一般用_时。3、unless主句与从句的两种位置关系。主句与从句的两种位置关系。 _
16、 _ 除非除非if.not一般将来一般将来一般现在一般现在主句在前，从句在后。主句在前，从句在后。从句在前，主句在后。从句在前，主句在后。 If not =UnlessSummarySummaryThe situation will continue _humansstop hunting them for their fur and bones.The situation will continue _humans_stop hunting them for their fur and bones.ifdontunlessDont forget to put a “comma ”after
17、the unless-clause when it is the first part of a sentence. 同义句改写同义句改写 unless= if.not1. Unless he studies hard, he will never pass the exam. 2. We will not get there on time unless we leave earlier. If he doesnt study hard, he will never pass the exam.We will not get there on time if we dont leave ea
18、rlier. 同义句改写同义句改写 unless= if.not3.Unless you try your best, you will not realize your dream. 4. You will be late unless you leave right now. If you dont try you best, you will not realize your dream.You will be late if you dont leave right now A trip to a film and TV studio1.Unless the weather repor
19、t says it is going to rain, _2. We will arrive at the studio around 9:30 a.m. _3. Unless you already know the studio very well, _4. You will buy your lunch at the restaurants in the studio. _5. Unless you are tired, _6. You will have a chance to see how a TV programme is recorded _ a. unless you tak
20、e your own food with you.b. you will not need to take the minibus in the studio.c. you will not have to take an umbrella with you.d. unless the traffic is very heavy.e. unless you have little interest in it.f. you will travel around it with a tour guide.学生活动指导：学生活动指导：组内讨论一分钟，组内讨论一分钟，然后由每组的然后由每组的1号抢号
21、抢答第一题，答第一题，2号抢答号抢答第二题，直至第二题，直至6号。号。一分一分/一题。一题。 A trip to a film and TV studio1.Unless the weather report says it is going to rain, _c. you will not have to take an umbrella with you.d. unless the traffic is very heavy.f. you will travel around it with a tour guide.a. unless you take your own food wi
22、th you.b. you will not need to take the minibus in the studio.e. unless you have little interest in it.学生活动指导：每组的学生活动指导：每组的1号抢答第一题，答对得一分。号抢答第一题，答对得一分。 A trip to a film and TV studio2. We will arrive at the studio around 9:30 a.m. _d. unless the traffic is very heavy.f. you will travel around it with
23、 a tour guide.a. unless you take your own food with you.b. you will not need to take the minibus in the studio.e. unless you have little interest in it.学生活动指导：每组的学生活动指导：每组的2号抢答第二题，答对得一分。号抢答第二题，答对得一分。 A trip to a film and TV studio3. Unless you already know the studio very well, _f. you will travel a
24、round it with a tour guide.a. unless you take your own food with you.b. you will not need to take the minibus in the studio.e. unless you have little interest in it.学生活动指导：每组的学生活动指导：每组的3号抢答第三题，答对得一分。号抢答第三题，答对得一分。 A trip to a film and TV studio4. You will buy your lunch at the restaurants in the stud
25、io, _a. unless you take your own food with you.b. you will not need to take the minibus in the studio.e. unless you have little interest in it.学生活动指导：每组的学生活动指导：每组的4号抢答第四题，答对得一分。号抢答第四题，答对得一分。 A trip to a film and TV studio5.Unless you are tired, _b. you will not need to take the minibus in the studio
26、.e. unless you have little interest in it.学生活动指导：每组的学生活动指导：每组的5号抢答第五题，号抢答第五题，答对得一分。答对得一分。 A trip to a film and TV studio6.You will have a chance to see how a TV programme is recorded _e. unless you have little interest in it.拓展一：条件状语从句和其它句型的变换拓展一：条件状语从句和其它句型的变换1. if引导的条件状语从句的复合句中，当主句和从句的引导的条件状语从句的复合
27、句中，当主句和从句的主语均为主语均为you时，可转换为时，可转换为“祈使句，祈使句，and+and+简单句简单句”或或“祈使句，祈使句，or+or+简单句简单句”You can pass the exam if you work hard.=_，and you will pass the exam.If you dont hurry up, you will be late again.= Hurry up, _ you will be late again.Work hardor2. 借助介词借助介词with with 或或withoutwithout来转换。来转换。例如例如: If you
28、 help me, Ill finish my job soon. =_, Ill finish my job soon. 如果你帮我，我将很快完成我的工作。如果你帮我，我将很快完成我的工作。 If there is no water, fish may die. =Fish may die _. 如果没有水，鱼可能会死。如果没有水，鱼可能会死。 With your helpwithout water同义句转换同义句转换1.Run fast, or youll be late for school. _ you _ _ fast, youll be late for school.2. Don
29、t come if I dont telephone. Dont come_ I telephone.3. If you dont help me, I cant work out the problems. I cant work out the problems _ _ _. If dont rununlesswithoutyourhelp拓展二：在其他句式中的运用拓展二：在其他句式中的运用Can you tell me if I can go to a good senior high school?Lucy asked if there was a bank near here.ifi
30、f引导引导宾语从句宾语从句时，作时，作“是否是否”讲，常放在讲，常放在动词动词ask 、see 、say 、know和和find out等后等后面。一般情况下，常与面。一般情况下，常与whether换用，在口换用，在口语中多用语中多用ifI dont know if he _ tomorrow.If he _ , I will take him to visit our city.A. comes, comesB. comes, will comeC. will come, comesD.will come, will come第一个第一个ifif表示是否引导宾语从句，时态根据表示是否引导宾语
31、从句，时态根据tomorrow ,tomorrow ,所以用将来时。第二个所以用将来时。第二个ifif表示如果，表示如果，主将从现，所以主将从现，所以ifif从句用一般现在时。从句用一般现在时。Choose the best answer1.You will fall behind others_ you dont work hard. A. when B.if C. though D.because2. The flowers _ grow well if they _. A. wont; dont water often B. dont; are often watered C. dont
32、; dont water often D. wont; are not often watered3.You will catch a cold _.A. if you will not put on more clothes B. if you put on more clothesC. until you put on more clothes D. unless you put on more clothes4. -I dont know if he _ to Kates birthday party? - Hes sure to go if he _. A.goes; knows B.
33、 will go; knows C. goes; will know D.go; konw同义句转换吗（每空一词）1. He wont be late unless he is ill. He wont be late _ he _ ill.2. If you dont run fast, youll be late for school. _ _, _ youll be late for school.ifisntRunfastor同义句转换同义句转换3.Take enough money with you, and you can buy the CD. You can buy the CD _ _ _ enough money with you.4.If there is no water,none of us can live. None of us can live _ _.ifyoutakewithoutwater 一般将来时一般将来时 情态动词情态动词+原形原形 祈使句祈使句 +if/u + 一般现在时一般现在时 主主 句句 if /unless+ 从句从句Summary:要要领:unless = if not
