Unit 4 Numbers Grammar2 课件(共22张PPT)

(共22张PPT)
STUDY
Module 2 Unit 4
Numbers
Grammar：Instructions and statements about numbers & Imperatives
Find the number that, when it is multiplied 23 times by itself, gives this answer:916748676920039158098660927585380162483106680144308622407126516427934657040867096593279205767480806790022783016354924852380335745316935111903596577547340075681688305620821016129132845546805780158806771Maths equation算式:XYX23= YLead-inTalk about the maths calculation.X X X … X= Ymultiply/ m lt pla /v.=equal/ i kw l/v.Language of mathsadd/ d/v.subtract/s b tr kt/v.divide/d va d/v.maths action wordsPresentationLearn the language.Learn the language.Additiona)Add3and9. You get 12.3+9=12b) 3plus9 equals/is 12.plus/pl s/prep.InstructionStatementPresentation3+5=8
12+23=35
40+60=100
a) Add 3 and 5. You get 8.
b) 3 plus 5 equals/is 8.
a) Add 12 and 23. You get 35.
b) 12 plus 23 equals/is 35.
a) Add 40 and 60. You get 100.
b) 40 plus 60 equals/is 100.
Say the addition.
Practice
Instruction
Statement
Subtractiona)Subtract3from9. You get 6.9-3=6b) 9minus3 equals/is 6.minus/ ma n s/prep.Learn the language.Presentation13-5=850-23=2790-15=75a)Subtract5from13. You get 8.b) 13minus5 equals/is 8.a)Subtract23from50. You get 27.b) 50minus23 equals/is 27.a)Subtract15from90. You get 75.b) 90minus15 equals/is 75.Say the subtraction.PracticeInstructionStatementMultiplicationa)Multiply3by9. You get 27.3×9=27b) 3multiplied by9 equals/is 27.Learn the language.Presentation7×8=566×9=544×5=20a)Multiply7by8. You get 56.b) 7multiplied by8 equals/is 56.a)Multiply6by9. You get 54.b) 6multiplied by9 equals/is 54.a)Multiply4by5. You get 20.b) 4multiplied by5 equals/is 20.Say the multiplication.PracticeInstructionStatementDivisiona)Divide9by3. You get 3.9÷3=3b) 9divided by3 equals/is 3.Learn the language.Presentation16÷4=442÷6=772÷8=9a)Divide16by4. You get 4.b) 16divided by4 equals/is 4.a)Divide42by6. You get 7.b) 42divided by6 equals/is 7.a)Divide72by8. You get 9.b) 72divided by8 equals/is 9.Say the division.PracticeInstructionStatementInstructionsAnswers1. _________ 12_________3.362._________ 56 _________ 8.73._________ 25 _________ 40.154._________ 10 _________ 15.255._________ 8 _________ 9.726._________ 24 _________ 4.6Multiply byDivide bySubtract fromAdd andMultiply byDivide byThink and write the instructions.PracticeQ: __________________________________________________________________________________________________Mary is 12 years old. Two years ago, she was twice her brother John’s age. How old is John now A:_______________________________________________12 minus 2 equals 10. That means Mary was 10 years old two years ago.Then divide 10 by 2. You get 5. That was John’s age two years ago.Add 2 and 5. You get 7. That’s his age now.John is now 7.Work out the word problem.PracticeMultiplyA by B.Instructions about numbersAddA and B.SubtractA from B.DivideA by B.ImperativesPresentationLearn the language.Add3 and 9.Subtract3 from 9.Becareful.Bequiet.Don’t watchTV.Don’t sleeplate.The negative is made by usingDon’torDo notin front of the imperative.Don’t belazy.Don’t belate for school.Positive imperativesNegative imperativesThe base form ofam,is,are, ... isbe.Learn the language.We useimperativestogive advice.Don’t forgetto take your passport with you.Becareful.We useimperativesto tell people to do or not to do things.Learn the language.PresentationWe useimperativestogive commands or orders.Stoptalking.(In class)Don’tpress that button. (A father to his son)We useimperativesto tell people to do or not to do things.Learn the language.PresentationBringme the files.There are many ways to make commands sound more polite.We can add“please”at the beginning or the end of what we say.Bring me the files,please. /Pleasebring me the files.We can usea question formto make a command sound more like a request.Willyoubringme the files We can useI’d likeyou+to-infinitive.I’d like you to bringme the files.Learn the language.PresentationWe useimperativestogive instructions.We useimperativesto tell someone how to do something.Add3 and 9.Beatfour eggs, like this.Learn the language.PresentationHow can I avoid mistakes in maths exams Becareful when you do calculations.Double checkeach and every answer while solving maths problems.Readthe questions carefully and properly....Give Peter some advice.Practicea) emergencies“I’m bleeding!Callan ambulance!”We do not useimperativeswhen speaking to people older than us except in the following situations:Generally, we use imperatives only with people the same age as us or younger.b) cheering“GoDad! Make a goal!”c) some requests“Mum,helpme, please.”Learn the language.PresentationGive meyourhomework,Ben.We usenouns of address(呼语) to emphasize (强调), or to make it clear who is ordered or asked.Amy, do not turn onyourmobile phone.→I tellBento give mehishomework.→I tellAmynot to turn onhermobile phone.Mum, help me, please.Learn the language.Presentation