1、 最新初中英语精品课件设计A Conditional sentences We have already learnt to use conditional sentences to talk about probable resultsWe can also use conditional sentences to talk about results that will certainly happen.最新初中英语精品课件设计The if-clause talks about a possible action If you put salt into water,it disappea
2、rs.The main clause talks about the result that will certainly happen最新初中英语精品课件设计Work out the ruleWhen 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.最新初中英语精品课件设计Things to rememberWe can also pu
3、t the if-clause after the main clause.Salt disappears if you put it into water.最新初中英语精品课件设计A1 Read these if clauses and draw lines to match them with the results最新初中英语精品课件设计1.If you take a fish out of water,a it grows 2.If you switch off the lamp,b it dies3.If you put wood into water,c the room beco
4、mes dark4.If you water a plant,d it breaks5.If you drop a galss,e it floats最新初中英语精品课件设计A2 In pairs,make conversations about the sentences in A1 on page 103.Following the example.S1:What happens if you take a fish out of water?S2:It dies.S1:Are you sure?最新初中英语精品课件设计S2:Of course.I am sure.If you take
5、a fish out of water,it dies.A3.Complete these sentenses with the words in brackets.1 If you _ice,_water.(turns/heat/it/into)heatit turns into 最新初中英语精品课件设计2.If you _steam,it _water.(into/cool/turns/it)3.Oil _water.(on/floats/pour/if/you/if)4.Water _it(you/heat/boils/if)coolit turns intofloats if you
6、pour it on boils if you heat最新初中英语精品课件设计B ifnot and unless The word unless can mean if not.For example,the two sentences below have the same meaning:If you do not get enough sleep every night,you will not remember things well.最新初中英语精品课件设计Unless you get enough sleep every night,you will not remember
7、things well.最新初中英语精品课件设计Things to remember We can also put the if clause and the unless clause after the main clause.You will be late for school if you do not leave now.unless you leave now.最新初中英语精品课件设计B1 Draw lines to match the beginnings of the sentences in Column A with the endings in Column B.最新
8、初中英语精品课件设计1 We will have a picnic tomorrow a you will not play it well 2 I will finish the book todayb if it does not rain 3 Unless you want to watch something c I will switch the television off now4 I am going to buy a dress for my mother.d unless I can think of a better idea for a present5 Unless
9、you practise playing the piano every day.e unless I feel tired 最新初中英语精品课件设计B2 Rewrite the following sentences with unless.1 If you do not improve your handwriting,you will lose marks in the exam.Unless you improve your handwriting,you will lose marks in the exam.最新初中英语精品课件设计You will lose marks in th
10、e exam unless you improve your handwriting.2 You will get a toothache if you do not brush your teeth every day.You will get a toothache unless you brush your teeth every day.最新初中英语精品课件设计Unless you brush your teeth every day,you will get a toothache.3.This room will get very hot if you do not open th
11、e window.This room will get very hot unless you open the window.Unless you open the window,this room will get very hot.最新初中英语精品课件设计4 If you do not close that window,flies will get in.Unless you close that window,flies will get in.Flies will get in,unless you close that window.最新初中英语精品课件设计5.I will leave this restaurant if the waiter does not come soon.I will leave this restaurant unless the waiter come soon.Unless the waiter come soon,I will leave this reataurant.最新初中英语精品课件设计 Thank you!最新初中英语精品课件设计
