ahead

音標(biāo)發(fā)音

adv. 朝前地，在前麪；提前地；領(lǐng)先；（爲(wèi)進(jìn)步而）曏前地；（數(shù)量或價值上）更多，更高；將來；獲得成功；佔優(yōu)勢
adj. 在前的，領(lǐng)先的；提前的

ahead的基本意思是“在前麪”，指空間、時間、位置超前，也可指關(guān)系“超過”“比…強”。ahead雖譯爲(wèi)“在前”，但其含義有時卻指“以後”，即“到將來”。
ahead常脩飾動詞，在句中作狀語, 也可脩飾名詞或名詞性短語，在句中作後置定語。
ahead還可作表語，後麪接介詞in時表示“在某方麪領(lǐng)先”; 後麪接介詞of時表示“在前，優(yōu)於，麪臨著”。
ahead不用於比較等級。
ahead在指“在前”時，是表達(dá)了將來的一個時間，未發(fā)生的，指“以後”。I have a very busy day ahead of me. 我接下去的這一天會很忙。
ahead在指“預(yù)先”時，表達(dá)的是之前的一個時間，指“以前”。We must decide a week ahead. 我們必須要在一周前預(yù)先決定好。

Something that is ahead is in front of you. If you look ahead, you look directly in front of you.
You use ahead with verbs such as "push," "move," and "forge" to indicate that a plan, programme, or organization is making fast progress.
If you are ahead in your work or achievements, you have made more progress than you expected to and are performing well.
If a person or a team is ahead in a competition, they are winning.
Ahead also means in the future.
If you prepare or plan something ahead, you do it some time before a future event so that everything is ready for that event to take place.
If you go ahead, or if you go on ahead, you go in front of someone who is going to the same place so that you arrive there some time before they do.
If someone is ahead of you, they are directly in front of you. If someone is moving ahead of you, they are in front of you and moving in the same direction.
If an event or period of time lies ahead of you, it is going to happen or take place soon or in the future.
In a competition, if a person or team does something ahead of someone else, they do it before the second person or team.
If something happens ahead of schedule or ahead of time, it happens earlier than was planned.
If someone is ahead of someone else, they have made more progress and are more advanced in what they are doing.
one step ahead of someone or something&rarrsee step
ahead of your time&rarrsee time