人教版九年级英语第13单元语法精讲精练与写作PPT 46页

单元语法精讲与精练 (Grammar Focus － 4c) Unit 13 　 We ’ re trying to save the earth! C 　 C D D D Is 　 the 　 boy 　 playing 　 basketball Where 　 did have was 　 shown by didn’t 　 use used 　 to 　 like is 　 walking is 　 being 　 repaired have 　 known should 　 be 　 read have 　 been 　 away 　 from used 　 to 　 work A A C C D B C B A D can needn’t should may mustn’t can’t Could May must can’t 单元写作指导及演练 Unit 13 　 We ’ re trying to save the earth! take action turn off play a part in clean up put sth. to good use is becoming worse and worse not only but also is good for It is everyone’s duty