He seems to have caught a cold 3)进行时:强调动作已在延续或动作正在进行。 They seem to be getting along well with their new jobs He seems to be eating something 4)完成进行时:表示动作是在谓语动词所表示的动作之前就一直在进行 They are said to have been collecting stamps for over twenty years He appears to have been waiting a long time 注意:动词不定式主动语态形式的使用要比被动语态形式的使用普遍,有时(尤 其在口语中)虽然意思上是被动的,也往往用主动语态形式来表示。 I have three motors to repair today The task is difficult to finish on time7 He seems to have caught a cold. 3)进行时：强调动作已在延续或动作正在进行。 They seem to be getting along well with their new jobs. He seems to be eating something. 4)完成进行时：表示动作是在谓语动词所表示的动作之前就一直在进行。 They are said to have been collecting stamps for over twenty years. He appears to have been waiting a long time. 注意：动词不定式主动语态形式的使用要比被动语态形式的使用普遍，有时（尤 其在口语中）虽然意思上是被动的，也往往用主动语态形式来表示。 I have three motors to repair today. The task is difficult to finish on time