before用法小结.ppt

before用法小结 Before用作连词 其基本词义是 在 之前 用来表示时间或顺序 如 Turnthelightoffbeforeyousleep 睡前先把灯熄掉Thinkbeforeyouspeak 说话之前应先想清楚但在不同的语境中before有不同的翻译 Before表示 不等 就 尚未 就 whydidn tyoutellhimaboutthemeeting Herushedoutoftheroom Icouldsayaword 我还没来得及说他就冲出了房间 A beforeB untilC whenD after before Icouldgetinaword hehadmeasuredme 我还没来得及插上话 他就给我量好了尺寸A AfterB WhenC sinceD before Thephonestoppedringing IAnsweredit 我还没来得及接 电话就挂断了 A untilB whileC beforeD after 2 Before表示 不知不觉 还没弄清就 此意常用于beforesb know realise TimepassedquicklyandthreemonthswentbybeforeIknewit 时间飞快流逝 不知不觉3个月过去了 SeveralweekshadgonebybeforeIrealisedit 不知不觉几个周就过去了 3 Before表示 以免 不然 趁 还没 It scloudy TakeanumbrellabeforeYouregretit 带把伞吧以免后悔 I llcallhimbeforeIforget 趁着还没忘记我就给他打个电话 Putthatawaybeforeitgetsbroken 把它收好 以免砸了 4 Before用于这两个句型 Itwas wasn t 一段时间 before从句 过了多久 没过多久才 Itwill won t 一段时间 before从句 还得过多久 用不了多久就 Itwasalongtimebeforewemetagain 过了很久我们才再次见面区别 Itis 一段时间 since从句 Itwasn t3yearsbeforewemetagain 没过3年我们就又见面了 Itwillbetwoyearsbeforewemeetagain 还要过两年我们才能见面 Itwon tbelongbeforeyouregret 用不了多久你就会后悔 Wedidn twaitlongbeforehecameback 我们没等多久他就回来了 5 Before表示 宁可 而不愿 I ddiebeforeIapologizedtothem 我宁死也不向他们道歉 Theywouldfighttodeathbeforetheysurrendered 他们宁死也不投降 Wewilldiebeforewegivein 我们宁死不屈 巩固性练习1 Ascientistmustpractisealot hecanusealldatatoolswell A assoonasB whenC untilD before2 sherealizedwhatwashappening shewashitoverthehead A WhenB beforeC sinceD as B D 3 whydidn tyouhelpthelittleboy Oh sorry Hehadstruggledtohisfeet Iranover A untilB afterC beforeD since4 Hemadeamistake butthenhecorrectedthesituation itgotworse A untilB whenC beforeD as C C 5 Scientistssayitmaybe5years itispossibletotestthismedicineonhumanpatients A SinceB afterC beforeD when6 Someonecalledmeupinthemiddleofthenight buttheyhungup Icouldanswerthephone A asB sinceC whileD before C D 7 You dbettergiveitup itistoolateasit sverydangerous A beforeB asC whenD since8 Itwouldbemonths hewasfitforwork A untilB sinceC beforeD after A C 9 Itwasevening wereachedthelittletownofWinchester A thatB untilC sinceD be