Gold-enhanced　mechanical　exfoliation　method　attracts　broad　interests　in　recent　years,　which　has　been　widely　used　for　preparing　large-area　and　high-quality　2D　single　crystals.　Even　many　calculations　predict　that　there　is　strong　interaction　between　Au　film　and　the　exfoliated　2D　crystals,　direct　experimental　evidence　is　still　lacking.　Here,　we　perform　Raman　spectroscopy　measurements　for　few　layer　MoS2　with　and　without　Au　film　underneath.　The　main　peaks　of　MoS2　on　Au　film　show　no　obvious　change　at　higher　frequency,　however,　the　breathing　and　shear　modes　at　low-frequency　are　suppressed,　especially　for　breathing　modes.　In　contrast,　both　breathing　modes　and　shear　modes　can　be　detected　on　suspended　MoS2　and　the　samples　are　transferred　from　Au　film　to　SiO2/Si.　These　comparison　results　provide　direct　evidence　for　the　existence　of　covalent-like　quasi-bonding　at　the　interface　of　Au　film　and　the　exfoliated　MoS2　crystal.　This　MoS2/Au　interface　interaction　presents　a　special　pinning-effect　for　low-frequency　rigid　vibration.　Similar　pinning-effect　is　also　discovered　in　WS2/Au　system.　Our　work　reports　the　suppression　of　low-frequency　Raman　modes　of　MoS2,　WS2　on　Au　film,　which　will　deliver　new　inspiration　for　studying　other　interactions　between　layered　materials　and　solid　surfaces.