单词	ace
释义	noun | adjective | verb aceace1 /eɪs/ noun [countable] Etymology ETYMOLOGYace1 Origin: 1300-1400 Old French as, from Latin, unit, a small coin 1 a playing card with a single spot on it, which usually has the highest value in a game:  the ace of hearts2someone who is extremely skillful at doing something:  a World War II flying ace pitching ace Doug Jones3a first shot in tennis or volleyball which is hit so well that your opponent cannot reach the ball and you win the point4an ace in the hole informal an advantage that you can use when you are in a difficult situation:  The letter from the president was his ace in the hole.5have an ace up your sleeve to have a secret advantage which could help you to win or be successful6hold all the aces to have all the advantages in a situation so that you are sure to win7be/come within an ace of doing something to almost succeed in doing something [Origin: 1300–1400 Old French as, from Latin, unit, a small coin] noun | adjective | verb aceace2 adjective an ace pilot/pitcher/skier etc. someone who is a very skillful pilot, player, etc.:  an ace detective noun | adjective | verb aceace3 verb [transitive] Verb Table VERB TABLE ace Simple Form Present I, you, we, they ace he, she, it aces Past I, you, he, she, it, we, they aced Present perfect I, you, we, they have aced he, she, it has aced Past perfect I, you, he, she, it, we, they had aced Future I, you, he, she, it, we, they will ace Future perfect I, you, he, she, it, we, they will have aced Continuous Form Present I am acing he, she, it is acing you, we, they are acing Past I, he, she, it was acing you, we, they were acing Present perfect I, you, we, they have been acing he, she, it has been acing Past perfect I, you, he, she, it, we, they had been acing Future I, you, he, she, it, we, they will be acing Future perfect I, you, he, she, it, we, they will have been acing 1spoken to do very well on a test, a piece of written work, etc.:  I think I aced the history test.2to hit your first shot in tennis or volleyball so well that your opponent cannot reach the ball
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