1、Unit 6,Unit 6 TV programmes,Grammar,Presentation,1. 如果你是个足球迷，你不会想要错过这周的节目。If you are a football fan, you will not want to miss this weeks programme.,2. 这种情况将会持续下去除非人们停止为了皮毛和骨头而猎杀老虎。The situation will continue unless humans stop hunting tigers for their fur and bones. 3. 如果你很容易被吓坏，别看了。If you get scar
2、ed easily, do not watch it.,We use if to 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.,What will happen if . ? Millie is thinking about herself, her friends and TV programmes
3、. Complete the 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 m
4、iss,3. If Amy _(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 _
5、(introduces, 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 documenta
6、ry about animals. 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
7、hunt live protect walk,is in danger,will attack,is hungry,will catch,vt./vi. 攻击，进攻,n. 北极熊,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)
8、_.,attack catch 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 h
9、unt live protect walk,will live,have babies,will protect,is danger,adj. 雄性的,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 we can use if . not to replace unless. e.g. The situa
10、tion 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 does not rain tomorrow, we are going to play football in
11、 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 school trip to a film and TV studio. However, she tore t
12、he 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 you will not have to take an umbrella with you. d unl
13、ess 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 you are tired, _You will have a chance to see how a T
14、V 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,条件状语从句条件状语从句主要由if或unless引导： if条件句 1) 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“如果”的意思。
15、 e.g. If it rains, we will stay at home.如果下雨我们就待在家里。,Grammar,2) 用法： (1)条件状语从句通常由连词if引导，意为“如果、假如”，主句不能用be going to表示将来，而应该用shall, will。 e.g. If you leave now, you will never regret it. 如果你现在离开，你永远都不会后悔。 (2)if “如果”，引导条件状语从句，主句用一般将来时，从句则用一般现在时。 e.g. If it rains tomorrow, I shant climb the hills.如果明天下雨，
16、我就不爬山了。,(3)主句是祈使句或含有情态动词，从句也用一般现在时。e.g. Please call me if he comes next Sunday.如果他下周日过来请打电话给我。 注意: 宾语从句中的if与条件状语从句if的区 别。宾语从句中的if “是否”相当于 whether, 引导宾语从句, 时态需根据语境确定。如果主句用一般现在时, 从句可以根据具体情况选用时态, 如果主句用一般过去时, 从句必须用过去时的某种形式。,unless 条件句 unless引导的条件句，表示强烈的否定。翻译为“除非”“非不可”。 e.g. You will fail unless you work
17、 harder. 你不努力就会失败的。=You will fail if you do not work harder. 注意: unless 从句里的谓语只能是肯定式, 因为本身unless表示否定。,单项选择。 1. If there _ no buying and sellingof animals, there _ no killing innature. A. is; will be B. will be; will be C. is; is D. will be; is,A,Exercises,2. Im waiting for my friend._, Ill go shopping alone. A. If she comes B. If she wont come C. If she doesnt come,C,3. We are going to play basketball_ it rains. A. if not B. when C. except that D. unless,D,4. Eat less food _ you want to put on weight.A. if B. unless C. until D. as soon as,B,Finish the exercises in the workbook.,Homework,