It goes without saying that… （从句）
=It is needless to say （that） （从句）【可缩写为 needless to say 】
=It is obvious that…（从句）
例如：不用说，早睡早起是值得的。
It goes without saying that it pays to keep early hours.
注意:
“Needless to say, 主词 + 动词”乃由”It is needless to say + that子句”化简而来, 因经常使用, 已成固定用法。但使用”It goes without saying…”时, 则其后一定要接that引导的名词子句, 而不可化简。
例: Needless to say, every parent loves his or her own child.
(不用说，每个做父母的都爱自己的小孩。)
It goes without saying that a good son will always takecare of his parents.
(不用说，好儿子会一直照顾他的双亲。)