extemporize

vt.即兴创作，即席演奏

verb

1. 即席发言；即兴表演
   to speak or perform without preparing or practising

vi. 即兴演奏或演说；临时凑合 vt. 即兴演奏或演说；当场作成

现在分词:extemporizing 过去式:extemporized 第三人称单数:extemporizes 过去分词:extemporized

1. He completely departed from the text and extemporized in a very energetic fashion.
   他完全脱稿，慷慨激昂地进行即席演说。
2. He have to extemporize because he have forget to bring his note.
   他因为忘了带讲稿，只好即席发言。
3. Certain performers are funnier when they extemporize.
   有些演员即兴表演时更有趣。
4. Because he had lost his notes, the lecturer had to extemporize.
   因为演讲人丢了稿子，只好即席发言。