Recently,　all-dielectric　metasurfaces　(AMs)　have　emerged　as　a　promising　platform　for　high-efficiency　devices　ranging　from　the　terahertz　to　optical　ranges.　However,　active　and　fast　tuning　of　their　properties,　such　as　amplitude,　phase,　and　operating　frequency,　remains　challenging.　Here,　a　generic　method　is　proposed　for　obtaining　high-efficiency　active　AMs　from　the　terahertz　to　optical　ranges　by　using　hybrid　structures　integrated　with　phase-change　materials.　Various　phase-change　mechanisms　including　metalinsulator　phase　change,　nonvolatile　phase　change,　and　ferroelectric　phase　change　are　investigated.　We　first　experimentally　demonstrate　several　high-efficiency　active　AMs　operating　in　the　terahertz　range　based　on　hybrid　structures　composed　of　free-standing　silicon　microstructures　covered　with　ultrathin　phase-change　nanofilms　(thickness　d　＜＜　lambda).　We　show　that　both　the　frequencies　and　the　strength　of　the　Mie　resonances　can　be　efficiently　tuned,　resulting　in　unprecedented　modulation　depth.　Furthermore,　detailed　analyses　of　available　phase-change　materials　and　their　properties　are　provided　to　offer　more　options　for　active　AMs.　Finally,　several　feasible　hybrid　structures　for　active　AMs　in　the　optical　range　are　proposed　and　confirmed　numerically.　The　broad　platform　built　in　this　work　for　active　manipulation　of　waves　from　the　terahertz　to　optical　ranges　may　have　numerous　potential　applications　in　optical　devices　including　switches,　modulators,　and　sensors.