事實上：As a matter of fact, In point of fact, In fact, Actually
As a matter of fact
連結句子，可放在句子的前、中、後都可
從拉丁文的 "res facti" 而來，有具體的詞源；用來強調「被連結的句子的是『事實』」
這種用法，較為正式一點，商業上也叫建議使用。
舉例：
As a matter of fact, we will accept the private equity fund's proposal.
In point of fact
連結句子，通常放在句子之「前」
用來強調「被連結的句子的是『事實』」，這種用法和 As a matter of fact 類似，
舉例：
In point of fact, these quotation prices are a little bit high for our company.
In fact
連結句子，通常放在句子之「前」
用來強調「被連結的句子的是『事實』」，但較為常用、較為口語。
舉例：
In fact, several teams has arrived and exerted training in advance before the opening.
Actually
副詞，通常放在句子之「前」「中」「後」都可
用來強調「被連結的句子或動作是『事實』」，但較為常用、較為口語。
舉例：
The boy actually has knocked the door and then delivered the package.
事實上 as-a-matter-of-fact.jpg
