【课件】Unit3Grammar课件高中英语人教版（2019）选择性必修第二册.pptx

Grammar ;a Japanese detective cartoon series;As we all know, they are the same person.; In order to find out the mysterious underground crime organization, Conan moves into Rans home.; Conan always drugs detective Mouri and imitates his voice to tell the truth. ;;过去完成时主要用来表示在过去某一时间之前就已经发生或者完成了的动作，即“过去的过去”，通常有一般过去时作为参照。;肯定式为__________________； 否定式为__________________； 被动式为__________________。;基本用法;They had led a peaceful life before they moved to the seaside. ;2. 表示“在过去某一时刻或动作之前已经完成了的动作或状态”,即“过去的过去”,可以用by,before等介词(短语)或一个时间状语从句来表示。;By the time the father returned home from abroad, Tom had grown up.;到上个星期为止，我们已经学习了7个单元了。;3. 先叙述过去发生的事情,在此之后追述或补述以前发生的动作时,常使用过去完成时。;4. 过去完成时还常常用在told,said,knew,heard,thought等动词后的宾语从句(或间接引语)中,这时从句中的动作发生在主句表示的过去的动作之前。;5. 动词think,want,hope,mean,plan,intend等用过去完成时来表示“过去未曾实现的想法、希望、打算或意图”等。;常用固定句型;It was the first time that we (7)__________(see) a film together. It was the most interesting movie that we (8)_____________(watch).;(2) 在句型Hardly/Scarcely…when…和 No sooner…than…中，主句常用过去完成时,从句用一般过去时，表示“一……就……”。; Hardly (9) _____ we ______(get) out of the cinema when we met some friends. ;这条被污染了的河流已被清理干净。 This polluted river has been cleaned. 　 他说这条被污染了的河流在他到来之前 就已经被清理干净。 He said this polluted river had been cleaned prior to his arrival. ;到那时为止我已经学会了 1000 个英语单词。 I had learned 1000 English words by then. 到目前为止我已经学会了 1500个英语单词。 I have learned 1500 English words so far. ;;;;;;