47．join in参加(活动)

　　 join sb．in．加入某人做事　　 。，

　　 He joined us in watering the trees．

　　 She also joined in the dancing．

46．insist on／persist in坚持

　 He insisted on／persisted in doing that．

45．inspire…with…以……激发

　 He inspired them with courage．

44．head for朝……去

　 The ship is heading for the nearest port．

43．recover from恢复

　 She has recovered from her illness．

42．reply to答复

41．quarrel over为……争吵

quarrel with同……争吵

They quarrelled over the property．

She quarrelled with her mother．

40．operate on为……手术

He operated on the wounded soldier．

39．owe…to…因……而感激(某人)；把……归功于

owe…for．_．欠……的钱(债，人情)

He owed five yuan for Mary．

Owing to his laziness he failed in the test．

38．treat…for治疗；医治

　 The doctor treated me for my broken leg．

　 treat…to…以……款待

　 I’11 treat you to dinner．

　 treat…as把……当作……

　 The teacher treated us as her friends．