问题描述：
请问 is familiar with 这句英语有过去式吗?
如果要描述古代的一个人和另一个人是熟人,用was familiar with
例如 Tom was familiar with Jack.
如果要描述古代的一个人和一群人认识,用were familiar with?
例如 Tom were familiar with the Jacks.
还是都用is familiar with也行?
如果要描述古代的一个人和另一个人是熟人,用was familiar with
例如 Tom was familiar with Jack.
如果要描述古代的一个人和一群人认识,用were familiar with?
例如 Tom were familiar with the Jacks.
还是都用is familiar with也行?
问题解答：
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