/were been?take took taken?run ran run?wake woke wokenРland – landed—landed?2.announce—announced—announced?3.stop—stopped --stoppedР4. set— set --set?5.sell—sold— sold?6.flee—fled—fledРpast perfect tenseР过去完成时由had +过去分词构成表示过去的过去生的动作Р构成方式:Р肯定句: had+动词的过去分词Р否定句: had not+ 过去分词Р一般疑问句:had+ 主语+ 过去分词Р肯定回答: Yes, 主语+ had. ?否定回答: No, 主语+ hadn’t.РBy the time I got to school, the bell had rung.? =when 当…的时候РI got to school.РnowР8:00Р7:30amРThe bell rang.Р当我到学校时,上课铃已经响了РMy mom came back.РnowР9:00amР8:00amРI cleaned up the yard.РBy the time my mom came back, I had cleaned ?up the yard.Р8:00amР9:00amРnowРBy the time she went outside, the bus had left.РShe went outside.РThe bus left.Рthe policeman get to the shop.РTom run away.РBy the time the policeman got to the shop, Tom had run away.РnowР5:00pmР6:00pm
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