1、Conditional sentences (2)8A Unit 7深圳市光明區(qū)外國語學校梁沛娟 JoyceGrammarReviewKarel will visit Shenzhen.What is Karel interested in? If Karel is interested in sightseeing,I will take him to the Red Bridge Park.If Karel is interested in delicious food， I will advise him to taste the roasted pigeon.ReviewIf Kare

2、l is interested in sightseeing, I will take him to the Red Bridge Park.a possible actionWe have learnt to use conditional sentences to talk about possible results.a possible resultIf Karel is interested in sightseeingIf Karel is interested in sightseeing, I will take him to the Red Bridge Park.Revie

3、wthe simple present tensethe simple future tenseif Karel is interested in sightseeing.I will take him to the Red Bridge Park What about a certain result?a possible resultLets learnIt disappears.If you put some salt into water, what happens to it?- What happens if you drop a glass?- It breaks.- Are y

4、ou sure?- Of course, Im sure. If you drop a glass,it breaks.- What happens if you water a plant?- It grows.- Are you sure?- Of course, Im sure. If you water a plant, it grows.Lets learn a possible actiona certain resultLets learnIf you put salt into water, it _. If you drop a glass, it _. If you wat

5、er a plant, it _. disappearsbreaksgrowslets discoverWhen we use a conditional sentence to talk about something that will certainly happen, both verbs should be in (the simple present tense / the simple future tense).Things to rememberWe can also put the if-clause after the main clause.if you put it

6、into water.If you put salt into water, it disappears.Salt disappears Lets learnPractice1. If you take a fish out of water,2. If you switch off the lamp,3. If you put wood into water,4. If you heat water to 100,5. If you cool water to 0,B. it dies.A. it boils.C. the room becomes dark.D. it turns into

7、 ice.E. it floats.Lets practiseDraw lines to match the if-clauses with the results.PracticeFill in the blanks with correct forms of the given words. 1. We _ at home if it rains tomorrow. (stay)2. Oil _ if you put it on water. (float)3. If I have enough money, I _a car.(buy)4. Your memory_ better if

8、you live a healthy life.(work)5. If you stick a needle into a baloon, it _. (burst) will stayfloatswill buy burstsa possible result a certain result a possible result a certain result will worka possible result Lets watchWhat will happen to Ron if he doesnt hurry up?Lets learnWhat will happen to Ron

9、 if he doesnt hurry up?Ron will miss the bus if he doesnt hurry up.Ron will miss the bus unless he hurries up.Ron will miss the bus unless he hurries up.Unless Ron gets up, hell be late. The word unless means if.not.Ron will miss the bus if he doesnt hurry up. If Ron doesnt get up, hell be late.Lets

10、 learn,Ron will miss the bus unless he hurries up.Unless Ron hurries up he will miss the bus. Lets learn ,The places of unless Draw lines to match the sentences.We will have a picnic tomorrowI will finish the book todayUnless you want to watch something,I am going to buy a dress for my motherUnless

11、you practice playing the piano every day,you will not play it well.if it does not rain.I will switch the television off now.unless I can think of a betteridea for a present.unless I feel tired.Practice2. If you dont eat a good breakfast, your brain will not work better. 3. If you dont work hard, you

12、 will not succeed.1. If you dont get enough sleep every night, you will not remember things well. Rewrite the following sentences with unless. = Unless you get enough sleep every night, you will not remember things well. = You will not remember things well unless you get enough sleep every night. =

13、Unless you eat a good breakfast, your brain will not work better. = Your brain will not work better unless you eat a good breakfast.= Unless you work hard, you will not succeed.= You will not succeed unless you work hard.PracticeAre you sure you can use conditional sentences in our daily life?Lets c

14、omplete the sentences between mum and Ron in the following situations.12Practice & use3_ your coat, you will catch a cold.(put on)The meat will go bad _ in the fridge. (put)You wont see clearly _ your glasses. (wear)If you dont put on1Practice & use_ your coat, you will catch a cold.(put on) / Unles

15、s you put on/unless you putPractice & use2The meat will go bad _ it in the fridge. (put)if you dont put if you dont wearPractice & use /unless you wear3You wont see clearly _ your glasses. (wear)Sum upIf you put salt into water, it disappears. (a certain result) 確定的結果unless = if notYou will miss the bus if you dont hurry up.You will miss the bus unless you hurry up.Conditional sentencesBoth verbs should b