新概念英语第一册第120课经典课件(精心整理)新概念英语第一册第120课经典课件(精心整理).ppt

It had already happened.;Revision: Lesson119 A true storyKey words＆expressions;Revision: Lesson119 A true storyText;Revision: Lesson119 A true storyText;Revision: Lesson119 A true storyText;Revision: Lesson119 A true storyExercise(Text):;Revision: Lesson119 A true storyExercise(Text):;Revision: Lesson119 A true storyGrammar:;It had already happened.; Now please open your books and turn to Lesson120. Lets look at the pictures.;三、过去完成时与一般过去时的比较 ;一、过去完成时;3.当两个动作都发生在过去，先发生的用过去完成时，后发生的用一般过去时。 when、while、after 、before等常与过去完成时连用，以强调事件发生的先后次序。 ;After she had cleaned the blackboard , she closed the window.;1. ate an apple;2. played ping pong; 当两个动作都发生在过去，先发生的用过去完成时，后发生的用一般过去时。 本课当中出现before和after 引导的时间状语从句。 before +一般过去时，主句用过去完成时 e.g. The film had already begun before I came back. after + 过去完成时， 主句用一般过去时 e.g. He left the room after he had turned off the light .;4.过去完成时常与already(已经), ever（曾经）, just（刚刚）和 never（从未）, by(到……), until(直到……), since+过去时间点/过去时的句子，for+段时间等连用，以强调事件发生的先后次序。例如： ;Exercise;二．句型转换: 1.I had sold the ticket when she came.（改否定句） I had not sold the ticket when she came. 2.She had sung a song to us before she danced.（改否定句） She had sung a song to us before she danced. 3.By 10:00 a.m, I had been very hungry. （改一般疑问句并做肯定回答） Had you been very hungry by 10:00 a.m.? Yes, I had. 4.Lucy had already completed the project when I arrived.（改一般疑问句并做否定回答） Had Lucy already completed the project when I arrived? No, she hadnt. ;二、过去完成时与现在完成时的比较;形式;三、过去完成时与一般过去时的比较;1. —______ you______ your homework yet? —Yes, I _____ it just now. A. Did; do; finished B. Have; done; finished C. Have; done; have finished D. Will; do; finish 2. —Where is Li Lei? —He ___ Shanghai. A. has gone to B. has been to C. went to D. goes to 3. Those foreign friends left Guangzhou __________. A. since last week B. a week ago C. for a week