牛津深圳版八年级英语下册《Unit 7 The unknown world》课件：Grammar（共13张PPT）.ppt

Unit7,Adverbial clauses,Adverbial clauses of reason tell us why things happen. We usually use because, as and since to start adverbial clauses of reason.,Adverbial clause of reason Main clauseBecause As no one else saw I refuse to Since these aliens believe you.,Main clause Adverbial clause of reason because I refuse to as no one else sawbelieve you, since these aliens.,We can also put the adverbial clause of reason after the main clause.,The police officer asked Tom some more questions about the aliens. Match the questions with the answers. Then use them to complete the police officers notes with as, since or because.,b,d,a,c,1. (because) Tina was sure that something landed in the forests near the hills because she heard a loud noise last night.,2. (as) Tom and Tina hid behind some bushes as they heard some voices speaking a strange language.,4.(Since) Toms father refused to believe him since no one else saw these aliens.,3. (Because) Tom ran away because an alien saw them and made a terrible noise.,We can also use because of to give the reason for something.,They went to the forest because of their curiosity.Tina woke up at midnight because of a loud noise.She decided to explore the forests because of it.,We can use a noun, a noun phrase or a (subject pronoun/object pronoun) after because of.,Write sentences about the story on page 99 by using because of .,1. Tina was surprised/the yellow light in the sky,Tina was surprised because of the yellow light in the sky.,2. The aliens landed on this planet / an accident,The aliens landed on this planet because of an accident.,3. The children ran away from the forest/ the aliens.,The children ran away from the forest because of the aliens.,4. Their dad was not sure about the childrens story/ the writing on the piece of paper,Their dad was not sure about the childrens story because of the writing on the piece of paper.,Exercise:,He found it increasingly difficult to read, _ his eyesight was beginning to fail.    A. and     B. for     C. but       D. or He didn't go to work_the heavy rain.A .because    B. because of      C. so     D. since,3.Did you call Sara back?  -I didnt need to, _well have a meeting together tonight. A. though           B. unless           C. because          D. if,4.I didnt go to the party not _the weather but _I didnt feel well. A. because of; because B. because  because of C. because; because  D. because of; because o,