9.现在完成进行时1 定义:现在完成进行时表示动作从过去某一时间开始,一直延续到现在,可能还要继续下去。2 现在完成进行时的构成:现在完成进行时是由“have/has+been+动词的现在分词”构成3 现在完成进行时的基本句型肯定式 I/We have been working.疑问式 Have you been working? 简略回答 Yes,I/we have. No,I/we havent.肯定式 He/She/It has been working.疑问式 Has he/she/it been working? 简略回答 Yes,he/she/it has. No,he/she/it hasnt.4 现在完成时的用法1) 在强调指出动作还未结束,还要继续下去。如:Ive been reading this book for two hours,but I havent finished it. 这本书我已读了两个小时了,但我还没读完。Ive read th