Question

20．我们应该尽最大努力去按时完成这项工作．
We shouldtry our best to finish the work on time．

Answer 1

分析 try our best to finish the work on time．

解答 答案：try our best to finish the work on time．表示尽某人最大的努力做某事用try one's best to do sth，结合主语we用物主代词our，前面是情态动词should，用动词原形，故try our best to，完成工作finish the work，按时on time，故答案是try our best to finish the work on time．

点评 1、try to do sth 努力做某事，试图做某事
   They are trying to study English well．
2、try doing sth 试着做某事（看看某种方法是否能成功）
   I am trying doing it in this way．
3、try/do one's best to do sth．尽某人的全力做某事
   We should try/do our best to help the people in trouble