pat指用手掌或同樣平展的什麽東西打擊、撫摸
'To tap' means to strike with an implement, for example a pencil or a hammer, but it could be a finger or the beak of a bird. These latter two items could be considered to be implements for the purpose of this explanation.
tap指用工具打擊、撫摸，比如，壹支鉛筆或壹個錘子，但也可以是壹根手指或者是鳥喙。後面的這兩項在這壹解釋中可以被當做工具。
Note that 'to tap' also has other meanings, for example drawing something (typically a liquid) out of a container.
註意：tap也有其他的意思，比如用壹種容器潑畫什麽東西（通常用液體）
pat on something" may impart the sense you would strike gently a small area of an object etc. whereas "pat something" may not
（此外），pat on something可以傳達出壹種輕擊某壹物體的小塊區域的意思，而pat something 不可以