Grammar and usagePresentperfecttense&Presentperfectcontinuoustense 现在完成时和现在完成进行时平冈中学Activity1.Findsomeonearoundyouwho1.hasbeenlovingsinginginthedormitoryfortwomonths?2.haslearnedtoplaypianoforfiveyears?3.hasbeensaying“Goodnight”toherroommateformorethanonemonth?4.havebeenutilizingprehistoricalpowers( 洪荒之力)tofightwithotherclassesinthebasketballmatch?5.hasbeenteachingEnglishinourclassformorethan2months?PartAStep1Observeanddiscover Mr Zhang has just bought a new car, but he has had touble with moto