要用到before one knows it 转眼之间 这个词组 it begins to rain brfore one knows ot 还是 it brgins rainning。。。。
åé®ä½ 个 she told a doctor summoned to her side è¿éé¢æä¹æ两个å¨è¯ told å summoned ï¼ä»å«æ¥äºä¸æçå»ç
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she told a doctor (who was) summoned to her side.
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ä½ è¿é说çåè¯çè¯æ¯æä»ä¹è¿æwas summonedä¸æ¯è¢«å¨äºå
追çæ¯æ summoned to her sideãè¿æ¯ä¸ä¸ªä»è¢«å¨å¥åå®è¯ä»å¥ç®åèæ¥çï¼ä»¥è¿å»åè¯å¼å¯¼çåè¯çè¯ï¼å½ç¶ä¼ éçæ¯è¢«å¨æä¹ã
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begin to do是固定搭配那
追答一般情况下可以互换,it做主语只能用begin to do。
追问那昨天下雨了怎么说 it rained yesterday 对吗
追答对的