1、 To learn to use if and unless Objectives 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. 1.图片对齐 在我们插入PPT图片或是输入文字的时候，为
2、了整齐都需要将插入的文本框对齐 ，但是又不想一个一个的进行操作，这时按住Ctrl键将需要进行对齐的文本选中 ，点击开始排列对齐垂直居中即可； 2.巧用格式刷 在制作PPT的时候为了保证PPT风格的统一，很多任通常会使用复制粘贴来确保 每一页PPT格式相同，这样对于少页数来说可以进行操作，但是碎玉多页面的话 就有点麻烦了，其实我们可以巧用格式刷：首先，在开始菜单栏下方有一个格式 刷，点击格式刷，很快就能看到效果； 3.去除所有动画效果 很多人在制作PPT的时候都是直接在模板库里下载模板进行使用的，但是下载的 模板大多数都是有幻灯片的，这样在演讲的时候很不方便，怎样将其进行去除呢 ？单击幻灯片放映
3、选择设置幻灯片放映，放映类型选择演讲者放映；换片方式 选择手动即可； 4.PPT快键 PPT逼格提升技巧逼格提升技巧 We use if to talk about the result of a possible action. We make sentences with if like this: If-clause (simple present tense) Main clause (will/may/might/+ infinitive) If you are a football fan, you will not want to miss this weeks programm
4、e. If you are an animal- lover, you may feel sad about it. Pay attention: We put a comma after the if-clause when it is the first part of a sentence. If-clause (simple present tense) Main clause (will/may/might/+ infinitive) If you enjoy solving mysteries, you might like this film. 1. Diana (will go
5、/go/goes) to Europe if she (will pass/pass/passes) the exams. 2. The graduates (will teach/teach/teaches) in 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 prope
6、r words. What will happen if . ? Millie is thinking about herself, her friends and TV programmes. Complete the sentences with the correct forms of the verbs in brackets. 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_(get
7、s, will get) home late, he _ (misses, will miss) his favourite cartoon. go may not have gets will miss 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,
8、might win) a prize. takes might win 5. If Sandy _(finds, will find) a programme interesting, she _ (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 whe
9、n it is the first part of a sentence. present comma Asking about animals Millie watched a documentary 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 po
10、lar bear do if its hungry? Millie: If a polar bear (3)_, it (4)_ fish from the water. attack catch hunt live protect walk is in danger will attack is hungry will catch vt./vi. 攻击，进攻攻击，进攻 n. 北极熊北极熊 Dad: What will elephants do if theyre thirsty? Millie: If elephants (5)_, they (6)_ until they find a r
11、iver. Dad: What will tigers do if they live in the wild? Millie: Tigers (7)_ for their own food if they(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 wi
12、ll male wolves do if theres danger? Millie: Male wolves (11)_ their families if there (12)_. attack catch hunt live protect walk will live have babies will protect is danger adj. 雄性的雄性的 Please read Part B on page 85 Pay attention to the use of unless. Using unless We can use unless to say that somet
13、hing 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 situation will continue unless humans stop hunting them for their fur and bones. The situation will continue if humans do not sto
14、p 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 the park. The unless-clause can come first or after the main clause. e.g. Unless you try your best, you will not realize yo
15、ur 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 the tips by accident. Help her put the tips back together. Match the two parts of the sentences and write the correct letter
16、s in the blanks. 1 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 unless the traffic is very heavy. c d 3 Unless you already know the studio very well, _ 4 You will buy your lunch at the res
17、taurants 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, _ 6 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 inter
18、est 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 条件状语从句主要由条件状语从句主要由if或或unless引导：引导： if条件句条件句 1) if条件句：条件句用于陈述语气，表示条件句：条件句用于陈述语气，表示 假设的情况可能发生，其中假设的情况可能发生，其中 if 是“如果”是“如果” 的意思。的意思。 e.g. If it rains, we will stay at home. 如果下雨我们就待在家里。如
19、果下雨我们就待在家里。 Summary 2) 用法：用法： (1)条件状语从句通常由连词条件状语从句通常由连词if引导，意为“如引导，意为“如 果、假如”，主句不能用果、假如”，主句不能用be going to表示将表示将 来，而应该用来，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。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，主句用一如果”，引导条件状语从句，主句用一 般般 将来时，从句则用一般现在时。将来时，从句则用一般现在时。 e.g.
20、If it rains tomorrow, I shant climb the hills. 如果明天下雨，我就不爬山了。如果明天下雨，我就不爬山了。 (3)主句是祈使句或含有情态动词，从句也用一主句是祈使句或含有情态动词，从句也用一 般现在时。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。如果他下周日过来请打电话给我。 注意注意: 宾语从句中的宾语从句中的if与条件状语从句与条件状语从句if的区的区 别。宾语从句中的别。宾语从句中的if “是否”相当于是否”相当于 whether, 引导宾语从句引导宾语从句
21、, 时态需根据语境确定。如果主时态需根据语境确定。如果主 句用一般现在时句用一般现在时, 从句可以根据具体情况选用从句可以根据具体情况选用 时态时态, 如果主句用一般过去时如果主句用一般过去时, 从句必须用过去从句必须用过去 时的某种形式。时的某种形式。 unless 条件句条件句 unless引导的条件句，表示强烈的否定。翻引导的条件句，表示强烈的否定。翻 译为“除非译为“除非”“非非不可”。不可”。 e.g. You will fail unless you work harder. 你不努力就会失败的。你不努力就会失败的。 =You will fail if you do not wor
22、k harder. 注意注意: unless 从句里的谓语只能是肯定从句里的谓语只能是肯定 式式, 因为本身因为本身unless表示否定。表示否定。 单项选择。单项选择。 1. If there _ no buying and selling of animals, there _ no killing in nature. A. is; will be B. will be; will be C. is; is D. will be; is A 2. Im waiting for my friend._, Ill go shopping alone. A. If she comes B. I
23、f 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 Why do I want to go to Beijing zoo? 1.If I _(go) to Beijing zoo, I_(learn) a lot
24、about animals. 2.If I _(arrive) at noon, I _ (see) the feeding of animals. 3.If I _(find) Monkey Hill, I _(have) fun there. 4.If I _(have) some more time, I _ (watch) the dolphin show. 5.If I _(watch) the animals carefully, I _ (get) enough information for my report. 6.If I _(finish) my report, I _(be) happy. 1.Memorize the new words ,expressions and patterns. 2.Finish off some exercises. 3.Prepare Integrated skills.
