[误] The vacation begins from tomorrow.

[正] The vacation begins tomorrow.

注：中文的“从”字在这种场合是不需译出的，其他场合也不需译成 from，例如“新学期从四月开始”。The new term begins in April. “新学期从四月五日开始。” The new term begins on the 5th of April. “茶会从六点开始。”The tea party begins at six o\'clock. “教育从一个人出生开始。” Education begins with a man\'s birth. 例句中的 tomorrow，是一个副词，副词前是不可以用介词的。April, the 5th, six o\'clock, birth 都是名词。