知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 The sentence I spoke to the boys, Sam and Tom could mean either I spoke to the boys and Sam and Tom (I spoke to more than three people) or I spoke to the boys, who are Sam and Tom (I spoke to two people); If sequential https://mannersh780zxt9.bloggerchest.com/profile