人教版选修7_Unit3+Under+the+sea+Warming+up+,+reading+and+language+points(共25张PPT)
人教版选修7_Unit3+Under+the+sea+Warming+up+,+reading+and+language+points(共25张PPT)第4页

n. c. 目击者,证人 There is no witness at the scene of the accident. n. c/u 证词,证据 be a witness to…   是。。的目击者 give witness on behalf of 替。。作证