| 41. | ask sb 's acceptance of a formal invitation |
| 请某人接受正式邀请
|
| 42. | file [lodge] a formal application |
| 提出正式申请
|
| 43. | make a formal application to become a member of the club [to join the club] |
| 正式申请成为该俱乐部成员（加入该俱乐部）
|
| 44. | give formal [official] approval to a budget |
| 正式批准一项预算
|
| 45. | a formal [an informal] atmosphere |
| 拘谨[不拘礼节]的气氛。
|
| 46. | the firth formal effort to liquidate World War II |
| 为结束第二次世界大战所作的第一次正式努力
|
| 47. | formal [informal] English |
| 正规场合使用[日常使用的非书面]的英语
|
| 48. | write in (a) formal register |
| 用正式语体写作
|
| 49. | a formal report |
| 正式报告
|
| 50. | a formal [an informal] request |
| 正式[非正式]请求
|