一般现在时一般过去时一般将来时现在完成时现在进行时过去完成时.IknowthatheisfromGermany.hecamehereyesterday.hewillvisittheGreatWall.hehasvisitedtheSummerPalace.heislearningChinesefromyou.hehadbeentoChinatwiceby2009IknowthatheisfromGermany.IknewthathewasfromGermany.Iknowthathecamehereyesterday.Iknewthathecamehereyesterday.IknowthathewillvisittheGreatWall.IknewthathewouldvisittheGreatWall.IknowthathehasvisitedtheSummerPalace.IknewthathehadvisitedtheSummenPalace.IknowthatheislearningChinesefromyou.IknewthathewaslearningChinesefromyou.IknowthathehadbeentoChinatwiceby2009.IknewthathehadbeentoChinatwiceby2009.Canyoutellme...?Whatdayisittoday?Canyoutellmewhatdayitistaday?Whatistheweatherlike?Canyoutellmewhattheweatherislike?Whatdoesyourfatherdo?Canyoutellmewhatyourfatherdoes?Wherehaveyoubeen?Canyoutellmewhereyouhavebeen?I’dliketoknow…Whoisyourfriend?Wheredidyouplayfootballlastnight?Howdoeshecometoschool?Howoftendoyouplaycomputer?Canyoutellme…?Doyouknow…?Iwanttoknow…1.DoesSallysingwell?2.DidSallygotoschoolyesterday?3.CanSallyplaythepiano?4.HasSallylearntanyChinese?5.WillSallycollectChinesefans?6.IsSallyfreeonFriday?7.DoLingling’sfriendslikeSally?
