副詞 first of all:

1. before anything else
   同義詞：first, firstly, foremost, first off

1. Well, first of all we can't possibly spare the time.
   你看，最主要的是我們實(shí)在抽不出時(shí)間。
2. First of all she just smiled, then she started to laugh.
   最初她只是微笑，後來(lái)才放聲大笑。
3. First of all, let me tell you the news.
   首先，讓我告訴你這個(gè)消息。
4. First of all, we are today as Senator Kennedy has admitted, the strongest nation in the world militarily.
   首先，正如肯尼迪參議員所承認(rèn)的那樣，我們是世界頭號(hào)軍事大國(guó)。
5. Marriage is, first of all, a contract which must be governed by justice.
   婚姻首先是一種契約，它必須以公正為制約。