1. Unit 20

2. 警告 … warn Sb of Sth warn Sb about Sth warn Sb against N

3. 警告 … warn Sb that

4. 警告 … warn Sb to V warn Sb not to V

5. 警告 … warn Sb of Sth warn Sb about Sth

6. 值得 … It is worth Ving = It is worthwhile to V = It is worthwhile Ving = It is worth our while to V

7. 值得 … It is worth visiting the Great Wall.

8. 值得 … It is worthwhile to visit / visiting the Great Wall.

9. 值得 … It is worth our while to visit the Great Wall.

10. 值得 … Sth be worth Ving = Sth is worthy of being PP = Sth is worthy to be PP = Sth is worthy of N

11. 值得 … The Great Wall is worth visiting.

12. 值得 … The Great Wall is worthy of being visited.

13. 值得 … The Great Wall is worthy to be visited.

14. 值得 … The Great Wall is worthy of our visit.

15. 儘可能 … as... as possible as... as one can

16. 儘可能 … Drink as much water as possible. Read as many books as you ca,.

17. 去除 … 的痛苦 relieve Sb of Sth

18. 治癒 … 的疾病 cure Sb of Sth

19. 搶走 … 的財物 rob Sb of Sth

20. 處在 … 的狀態下 leave O OC keep O OC

21. 讓某人 / 某事 … keep O Ving keep O PP

22. 讓某人 / 某事 不能 … keep O from Ving stop O from Ving prevent O from Ving