2020屆高考英語語法專題復(fù)習(xí) 語法剖析---三種時態(tài)
no one knows what will happen in the future.i will explain it once again if you listen to me.be going to +動詞原形表示計劃、打算；表示客觀跡象what are you going to be in the future?look! the clouds are gathering.it is going to rain.be about to + 動詞原形表示即將或正要去做……,不與時間狀語連用, 但可和when 從句連用。i am about to go to the cinema.the train is about to leave.be to + 動詞原形表示預(yù)定要做……；（表命令、禁止）應(yīng)該……all these are to be answered for!you are not to smoke in the meeting-room.be doing表示按計劃安排即將發(fā)生的動,常限用于go,come,start,leave,reach,arrive,return,move等位移動詞。they are leaving for shanghai next week.when are you going abroad?