重点讲解：
1. wake up 醒；醒来；
例句：What time did you wake up this morning?
今天早晨你几点醒来的？
2. fail to do sth. 失败；未能够；未做成；
例句：Their antics never fail to amuse.
他们滑稽的举止总是让人发笑+_4GKbC7RQqKJ5#LR。
3. go down on one's knees 跪下；趴下；
例句：I went down on my knees and prayed for guidance.
我跪了下来，祈求得到指引(cf2g#W(f1lO=&。
4. enable sb. to do sth. 使能够；使有机会；
例句：This will enable the audience to sit in comfort while watching the shows.
这样能够让观众舒舒服服地坐着看表演W~i5b(jKr;e!ezW9Mw_c。