用现在完成时改写 Our teacher came here an hour ago

用现在完成时改写 Our teacher came here an hour ago Our English teacher _____ (leave) school an hour ago. they came here an hour ago 改为同义句 they ___ ___ here for an ho They left an hour ago变成现在完成时 Mr Green arrived here an hour ago（改为现在完成时 Mr Green has___ he 改写He returned home an hour ago We cooked the dumplings an hour ago.(用for an hour改写） 句型转换 1.Your teacher left here about an hour ago.2.The old me Sam ( )here half an hour ago 1.She came here five years ago.(用现在完成时改句子） 2.My brother ofte She typed it an hour ago.改为现在完成时 I finished my homework an hour ago(改为现在完成时)