魏碑心思朗文詞典
      簡(jiǎn)體 繁體

      before

      B 開(kāi)頭單詞四級(jí)詞匯專八核心詞高考詞匯

      音標(biāo)發(fā)音

      • 英式音標(biāo) [b??f?:(r)]
      • 美式音標(biāo) [b??f?r,-?for]
      • 國(guó)際音標(biāo) [bi'f?:]
      • 英式發(fā)音
      • 美式發(fā)音

      基本解釋

      • prep. 在……之前,先于;在……面前;面對(duì)(法院、法庭或其他官方機(jī)關(guān))并受審;(寧愿……)不愿
      • conj. 在……以前;到……為止;以免,不然;(寧可……而)不愿
      • adv. 以前,過(guò)去,已經(jīng)

      同根派生

      • before
      • before相關(guān)詞

      用法辨析

        prep. (介詞)

      • before可用于表示時(shí)間。首先,可以表示“先于,在…以前”,其后可以跟表示具體日期、時(shí)間等的名詞或數(shù)詞,也可以跟表示時(shí)間或動(dòng)作的名詞。其次,可以表示“在做…之前”,后接 v -ing。再次,可以表示“緊接在…之前”。before用于否定句還可表示“直到…為止”。注意before之后只能接表示時(shí)間點(diǎn)的名詞,而不能接表示時(shí)間段的名詞。
      • before可用于表示動(dòng)態(tài)或靜態(tài)的位置,意思是“在…之前”,與behind相對(duì)。
      • before可用于表示順序或排列上的“在…之前”或“居于…之前”,與after相對(duì)。引申可用于表示比較,即在等級(jí)、價(jià)值、重要性、能力等方面的“在先”“優(yōu)于”“重于”。再引申則可用于表示對(duì)某事物的優(yōu)先選擇,即“寧可”或“與其…寧可”。
      • before還可表示“面對(duì),在…眼前,在…面前”“有待于去完成”“在審理中,由…考慮”“在…壓力下”等。
      • conj. (連詞)

      • before主要引導(dǎo)時(shí)間狀語(yǔ)從句,意為“先于”“…之后才”“(不多久)就…”。當(dāng)主句是將來(lái)時(shí)時(shí),從句謂語(yǔ)動(dòng)詞須用現(xiàn)在時(shí);當(dāng)主句是一般過(guò)去時(shí)或過(guò)去完成時(shí)時(shí),從句常用過(guò)去時(shí)。before引導(dǎo)的時(shí)間狀語(yǔ)從句不能用于否定式。
      • before還可用于barely〔scarcely〕...before結(jié)構(gòu),意為“剛…就…”。
      • before還可引導(dǎo)讓步狀語(yǔ)從句,意思是“寧愿…也不…”。
      • before引導(dǎo)的從句常用省略句型。
      • adv. (副詞)

      • before用作副詞時(shí),意思是“以前,在前面”,表示從較近的過(guò)去至較遠(yuǎn)的過(guò)去。用作時(shí)間狀語(yǔ)泛指以前、不與具體時(shí)間連用時(shí),謂語(yǔ)動(dòng)詞可以用一般過(guò)去時(shí),也可用現(xiàn)在完成時(shí),前者只表示“過(guò)去發(fā)生過(guò)”,后者則強(qiáng)調(diào)“對(duì)現(xiàn)在有影響”。
      • before與具體時(shí)間連用時(shí),一般置于其后,謂語(yǔ)動(dòng)詞通常用過(guò)去完成時(shí)。
      • before使用方法
      • before詳細(xì)辨析

      英漢例句

        用作介詞 (prep.)

      • The man standing before the blackboard is our English teacher.
        站在黑板前面的那個(gè)人是我們的英語(yǔ)老師。
      • 用作連詞 (conj.)

      • Be a pupil before you become a teacher.
        先做學(xué)生,再做老師。
      • 用作副詞 (adv.)

      • We saw that film before.
        那部電影我們以前看過(guò)。
      • before更多例句

      詞組短語(yǔ)

        用作介詞 (prep.)

        動(dòng)詞+~

      • appear before 在(某時(shí))之前出現(xiàn);出庭
      • carry before 迅速獲勝,勢(shì)如破竹
      • come before 在…之上,比…重要;被交由…處理;被提交…考慮
      • complain before 控訴
      • go before 居先;走在前面
      • before更多詞組

      英英字典

        劍橋英英字典

      • at or during a time earlier than (the thing mentioned)
      • in front of
      • 柯林斯英英字典

      • If something happens before a particular date, time, or event, it happens earlier than that date, time, or event.
      • Before is also a conjunction.
      • If you do one thing before doing something else, you do it earlier than the other thing.
      • Before is also a conjunction.
      • You use before when you are talking about time. For example, if something happened the day before a particular date or event, it happened during the previous day.
      • Before is also a preposition.
      • Before is also a conjunction.
      • If you do something before someone else can do something, you do it when they have not yet done it.
      • If someone has done something before, they have done it on a previous occasion. If someone has not done something before, they have never done it.
      • If there is a period of time or if several things are done before something happens, it takes that amount of time or effort for this thing to happen.
      • If a particular situation has to happen before something else happens, this situation must happen or exist in order for the other thing to happen.
      • If someone is before something, they are in front of it.
      • If you tell someone that one place is a certain distance before another, you mean that they will come to the first place first.
      • If you appear or come before an official person or group, you go there and answer questions.
      • If something happens before a particular person or group, it is seen by or happens while this person or this group is present.
      • If you have something such as a trip, a task, or a stage of your life before you, you must do it or live through it in the future.
      • When you want to say that one person or thing is more important than another, you can say that they come before the other person or thing.
      • before long&rarrsee long
      • before劍橋字典
      • before柯林斯字典
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