Who had bought a new mobile phone
Who had cleaned the blackboard
Last class, who had been standing here in Class3
How many students had been sitting on the chairs in Class3
Past PerfectPast Perfect Continuous RevisionPast Perfect 过去完成时had+past participle( 动词的过去分词 ) 规则动词不规则动词助动词 ( 无人称变化 )regular verbsirregural verbs过去分词的构成:1
规则动词的变化:a) 一般情况下在动词后面加 ed work ------ worked play -------- playedb) 以 e 结尾的动词直接加 d use ------ used refuse ------ refusedc) 以辅音字母加 y 结尾的动词,把 y 改 i 再加 edstudy ----- studiedcarry ----- carriedd) 以重读闭音节结尾的,前面有单个元音字母时,双写辅音字母,再加 edstop ---- stoppeddrop ------- dropped直接加 ed有 e 只加 d把 y 变 i 加ed重读双写加 ed2
不规则动词的变化lightlighted/litholdheldbuy boughteateatenlose lost不规则动词的变化见 Moduel 5 表Past Perfect Continuous 过去完成进行时had been+ present participle( 动词的现在分词 ) 直接加, 去 e 加, 双拼加 ,改 ie 为 y