■ dinner

是一天中主要的、比较正式和丰盛的一顿饭，可以是午饭，也可以是晚饭。美国人由于工作关系，一般午饭很简单，所以 dinner 通常是晚饭。但是遇到周末或节日（感恩节、圣诞、新年等），则中饭就比较丰盛，dinner 就是中饭（约在下午一点钟）。如果被美国人邀请 have Sunday dinner with us，就不能傍晚才去。

• assertive
• assume
• assure
• assure 与 ensure
• astonish
• astound
• as well
• as well as
• as well...as
• as with
• at
• at
• at all
• at issue
• atmosphere
• at once
• at one's peril
• attention
• attention 与 caution
• at that
• at the cost of
• at the expense of
• attitude
• attitude
• attitude 与 posture