substitute for sb./sth. 代替/取代某人/某物

　　用A代替B

　　②She often substitutes for absent teachers in their Spanish classes.

　　她经常代替缺勤的老师上西班牙语课。

　　③We should substitute a broken window with/by a new one.

　　＝We should substitute a new window for a broken one.

　　我们应该用新窗户更换破了的窗户。

　　4．acknowledge

　　[教材原句]　First of all, he told me, I couldn't write what other people had said without acknowledging them.

　　他告诉我说，首先，我不能把别人的话写下来而不表示感谢。

　　(1)vt.答谢；告知收到

　　①I gratefully acknowledged financial support from several local businesses.

　　我对本地几家企业的资助表示感谢。

　　(2)vt.承认(......的重要性)；确认

　　acknowledge sb./sth.to be/as ...

　　　　　　　　 　承认某人/某物是......

　　acknowledge that ... 承认......

　　acknowledge doing ... 承认做......

　　It is universally/generally acknowledged that ... 大家公认......

　　②They acknowledged having been defeated at last.

　　最后，他们承认被打败了。

　　③It_is_universally/generally_acknowledged_that he is the best player in the world.

　　他被公认为是世界最佳球员。

　5. occupy vt.占用；占领；占据

　　occupation n．[C] 工作；职业 [U] 占领；居住

　　[教材原句]　I have been so occupied with work that I haven't had time for social activities.

　　我一直忙于学习，以至于没有时间去搞社交活动。

　　(1)vt. 占用(时间、空间)；占据；占领

　　①Problems at work continued to occupy his mind for some time.

　　工作上的问题继续在他脑海中萦绕了一段时间。

　　(2)vt.使忙碌；使从事