Unit5Thehumanbrain

1、Unit 5 GrammarAdverbial clauses（II）,if, ifnot and unless,Nico Wu,Review the following sentences.,If the picture is silly, strange and colorful, you will remember it better. If someone shouts “Spider” and puts a big spider on your hand, you will probably remember the word “spider”.,We use if sentence

2、s to talk about results that will probably happen. In these sentences, the verb tenses are different. The verb in the if clause (first clause) is in the simple present tense. The verb in the second clause is in the simple future tense.,Conclusion,If someone shouts “Spider” and puts a big spider on y

3、our hand, you will probably remember the word “spider”. You will probably remember the word “spider” if someone shouts “Spider” and puts a big spider on your hand.,A pair of conditional clauses are spoken with a rising and falling intonation pattern, rising to a peak on the last word of the if claus

4、e.,If the picture is silly, strange and colorful, you will remember it better.,A Williams mum is giving him advice about his problems. Match the half-sentences from the boxes to complete her advice for him.,Williams problems 1. I sometimes bring the wrong books to school.,If you check your timetable

5、 every night，you will know which books to bring.,2. I was away from school today, I do not know what homework to do.,If you call your friends, they will tell you what homework to do.,3. I hate getting up, I always feel tired in the morning.,If you go to bed early, you will not feel tired in the morn

6、ings.,4. I do not know what this word means.,If you look it up in the dictionary, you will find out its meaning.,4. The link method doesnt help me much. I forget the pictures in my mind.,If you think about each picture for 10 to 20 seconds, it will stay in your mind better.,B carol is giving advice

7、to Henry. What is she saying? Use the pictures and the words in brackets to help you,_ the wheels round, they_easily.(make/turn),If you make,will turn,2.The seeds _ in the soil .(grow/plant),will grow if you plant them,3. _ another wing, it _.(put on/ fly),If you put on,will fly,4. _ your coat, you

8、_ so cold.(put on/not feel),If you put on,will not feel,5. The meat _ in the fridge. (not go bad/put),will not go bad if you put it,6. You_ your classes. (see clearly/wear),will see clearly if you wear,Review the following sentences.,If something dramatic happens, we usually remember it well. If you

9、 want to remember something, you should make of it in your mind.,We also use if sentences to talk about results that will certainly happen. In these sentences, both verbs are in the simple present tense. We also use a sentence with modal verb+ V. as the main clause.,Conclusion,Read these if sentence

10、s and match the possible actions with the results.,If you do not give plants water, they die.,Ifnot = Unless,Unless you give plants water, they die.,The word unless means if not. For example, these sentences have the same meaning:,If you do not keep ice cream in a freezer, it melts.,Join the followi

11、ng sentences with if . not.,C1,you improve your handwriting/you will lose marks in the exam you will get toothache/you clean your teeth regularly this room will get very hot/you put the air conditioning on soon you understand this exercise/please put up your hand you close that window/lots of mosqui

12、toes will get in the waiter comes soon/I shall leave this restaurant,If you do not improve your handwriting, you will lose marks in the exam.,You will get toothache if you do not clean your teeth regularly.,This room will get very hot if you do not put the air conditioning on soon.,If you do not und

13、erstand this exercise, please put up your hand.,If you do not close that window, lots of mosquitoes will get in.,If the waiter does not come soon, I shall leave this restaurant.,If you do not improve your handwriting, you will lose marks in the exam.,You will get toothache if you do not clean your t

14、eeth regularly.,This room will get very hot if you do not put the air conditioning on soon.,If you do not understand this exercise, please put up your hand.,If you do not close that window, lots of mosquitoes will get in.,If the waiter does not come soon, I shall leave this restaurant.,Unless you im

15、prove your handwriting, you will lose marks in the exam.,You will get toothache unless you clean your teeth regularly.,This room will get very hot unless you put the air conditioning on soon.,Unless you understand this exercise, please put up your hand.,Unless you close that window, lots of mosquito

16、es will get in.,Unless the waiter comes soon, I shall leave this restaurant.,Match the beginnings of the sentences in Column A with the endings in Column B.,C2,Fill in the blanks with if or unless. 1._you pass your exams, your parents will be very happy. 2.Those ice creams will melt _ you put them i

17、n the fridge. 3.You wont be short of money _ you get a job. 4.We will go there on time_ I am very busy. 5.He will be late for class _ he runs faster.,If,unless,if,unless,unless,Lets practice,1. If it (not rain) tomorrow, we will come to meet you. 2. If he comes tomorrow, I (call) you. 3. Unless you

18、(talk）to someone, you (not feel) better.,doesnt rain,will call,talk,wont feel,4. They will go to the Great wall, if it _ tomorrow. doesnt rain B. isnt raining C. wont rain D. will rain,5. We wont go to college _ we work hard. A. unless B. if C. when D. because,6. Illgivethebooktohimifhe_herenextSund

19、ay. A.willcome B.comes C.iscoming D.came,A,A,B,7. -Are you going to climb the mountain tomorrow? - Yes, but if it_, I _ stay at home. A. rains; stay B. will rain; stay C. rains, will stay D. will rain; will stay,C,8. You wont get good grades_ you improve your study ways. A. if B. unless C. when D. b

20、ecause,B,9. 如果我明天有空，我会和Tom一起去踢球。 10. 如果明天不下雨我们就去公园。,If Im free, I will play soccer with Tom.,If it doesnt rain tomorrow, we will go to the park.,拓展一：条件状语从句和其它句型的变换,1.有if引导的条件状语从句的复合句中，当主句和从句的 主语均为you时，可转换为“祈使句，and+简单句”或 “祈使句，or+简单句”,You can pass the exam if you work hard. =_，and you will pass the exam.,If you dont hurry up, you will be late again. = Hurry up, _ you will be late again.,Work hard,or,2. 借助介词with 或without来转换。 例如: If you help me, Ill finish my job soon. =