?跟某人面熟

... know sb by face: 只认识某人之脸孔 know sb by sight: 跟某人面熟 know sb by name: 只认识某人之名字 ...

?同某人面熟

... know sb by name只知某人的名字 know sb by sight同某人面熟 know from能分辨… ...

?跟某人只是面熟

... by sight见过,见到 know sb by sight跟某人只是面熟 for sb's sight给某人看 ...