1、Unit 6 TV programmes,Grammar,To learn to use if and unless,Please read the following sentences and try to translate them into Chinese,1. I will ask the teacher for help if I dont understand. 2. She will be happy if she joins the party. 3. If you copy homework, you will start a bad habit.,We use if t

2、o talk about the result of a possible action. We make sentences with if like this:,Pay attention: We put a comma after the if-clause when it is the first part of a sentence.,1. Diana (will go/go/goes) to Europe if she (will pass/pass/passes) the exams. 2. The graduates (will teach/teach/teaches) in

3、the poor village if the Ministry of Education (will agree/ agree/agrees) soon. 3. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once.,Choose the proper words.,What will happen if . ? Millie is thinking about herself, her friends and TV programmes. Complete th

4、e sentences with the correct forms of the verbs in brackets.,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 late, he _ (misses, will miss) his favourite cartoon.,go,may not have,gets,will miss,3. If Amy

5、 _(completes, will complete) all her homework quickly, she _ (watches, will watch) the chat show.,completes,will watch,4. If Daniel _ (takes, will take) part in the game show, he _ (wins, might win) a prize.,takes,might win,5. If Sandy _(finds, will find) a programme interesting, she _ (introduces,

6、will introduce) it to us.,finds,will introduce,Work out the rule! We often use the simple _ (future, present) tense in the if-clause. We need a _ (comma, full stop) after the in-clause when it is the first part of a sentence.,present,comma,Asking about animals Millie watched a documentary about anim

7、als. Help Millie answer her fathers questions with the help of the words in the box.,Dad: What will a bear do if its in danger? Millie: If a bear (1)_, it (2) _ people. Dad: What will a polar bear do if its hungry? Millie: If a polar bear (3)_, it (4)_ fish from the water.,attack catch hunt live pro

8、tect walk,is in danger,will attack,is hungry,will catch,vt./vi. 攻擊，進(jìn)攻,n. 北極熊,Dad: What will elephants do if theyre thirsty? Millie: If elephants (5)_, they (6)_ until they find a river. Dad: What will tigers do if they live in the wild? Millie: Tigers (7)_ for their own food if they(8) _.,attack cat

9、ch hunt live protect walk,are thirsty,will walk,will hunt,live in the wild,Dad: What will tigers do if they have babies? Millie: Tigers (9)_ as a family if they (10)_. Dad: What will male wolves do if theres danger? Millie: Male wolves (11)_ their families if there (12)_.,attack catch hunt live prot

10、ect walk,will live,have babies,will protect,is danger,adj. 雄性的,Please read Part B on page 85,Pay attention to the use of unless.,Using unless We can use unless to say that something can only happen or be true in a particular situation. e.g. He wont come to the party unless you invite him.,Sometimes

11、we can use if . not to replace unless. e.g. The situation will continue unless humans stop hunting them for their fur and bones. The situation will continue if humans do not stop hunting them for their fur and bones.,e.g. Unless it rains tomorrow, we are going to play football in the park. If it doe

12、s not rain tomorrow, we are going to play football in the park.,The unless-clause can come first or after the main clause. e.g. Unless you try your best, you will not realize your dream. You will be late unless you leave right now.,A trip to a film and TV studio Sandy has prepared some tips for a sc

13、hool trip to a film and TV studio. However, she tore the tips by accident. Help her put the tips back together. Match the two parts of the sentences and write the correct letters in the blanks.,Unless the weather report says it is going to rain, _ 2 We will arrive at the studio around 9:30 a.m., _,c

14、 you will not have to take an umbrella with you. d unless the traffic is very heavy.,c,d,Unless you already know the studio very well, _ 4 You will buy your lunch at the restaurants in the studio, _,a unless you take your own food with you. f you will travel around it with a tour guide.,f,a,5 Unless

15、 you are tired, _ You will have a chance to see how a TV programme is recorded, _,b,e,b you will not need to take the minibus in the studio. e unless you have little interest in it.,Work out the rule! We use the simple _ (future, present) tense in the unless-clause.,present,條件狀語從句 條件狀語從句主要由if或unless

16、引導(dǎo)： if條件句 1) if條件句：條件句用于陳述語氣，表示 假設(shè)的情況可能發(fā)生，其中if是“如果” 的意思。 e.g. If it rains, we will stay at home. 如果下雨我們就待在家里。,Grammar,Summary,2)用法： (1)條件狀語從句通常由連詞if引導(dǎo)，意為“如 果、假如”，主句不能用begoingto表示將 來，而應(yīng)該用shall, will。 e.g. Ifyouleavenow,youwillneverregretit. 如果你現(xiàn)在離開，你永遠(yuǎn)都不會后悔。 (2)if“如果”，引導(dǎo)條件狀語從句，主句用一般 將來時，從句則用一般現(xiàn)在時。 e.

17、g. Ifitrainstomorrow,Ishantclimbthehills. 如果明天下雨，我就不爬山了。,(3)主句是祈使句或含有情態(tài)動詞，從句也用一 般現(xiàn)在時。 e.g. PleasecallmeifhecomesnextSunday. 如果他下周日過來請打電話給我。 注意:賓語從句中的if與條件狀語從句if的區(qū) 別。賓語從句中的if “是否”相當(dāng)于whether, 引導(dǎo)賓語從句, 時態(tài)需根據(jù)語境確定。如果主句用一般現(xiàn)在時, 從句可以根據(jù)具體情況選用時態(tài), 如果主句用一般過去時, 從句必須用過去時的某種形式。,unless 條件句 unless引導(dǎo)的條件句，表示強(qiáng)烈的否定。翻譯為“除

18、非”“非不可”。 e.g. Youwillfailunlessyouworkharder. 你不努力就會失敗的。 =You will fail if you do not work harder. 注意: unless從句里的謂語只能是肯定 式, 因?yàn)楸旧韚nless表示否定。,單項(xiàng)選擇。 1. Ifthere_nobuyingandselling ofanimals,there_nokillingin nature. A.is;willbeB.willbe;willbe C.is;is D.willbe;is,A,Exercises,2. Imwaitingformyfriend._, Illgoshoppingalone. A.Ifshecomes B.Ifshewontcome C.Ifshedoesntcome,C,3. We are going to play basketball _ it rains. A. if not B. when C. except